git.lucas.co / cce-compositor
Wayland compositor (wlroots)
git clone https://git.lucas.co/cce-compositor.git

commitb6e72d5b90cafc4496dcb12be38019bc628b6d9b
parent3bdc5814e8
authorIsaac Freund <[email protected]>
date2024-03-07 16:19
build: update to Zig 0.12

 .builds/alpine.yml                 |  8 ++--
 .builds/archlinux.yml              |  8 ++--
 .builds/freebsd.yml                |  8 ++--
 README.md                          |  2 +-
 build.zig                          | 79 +++++++++++++++++++++-----------------
 common/flags.zig                   |  6 +--
 deps/zig-wayland                   |  2 +-
 deps/zig-wlroots                   |  2 +-
 deps/zig-xkbcommon                 |  2 +-
 river/Control.zig                  |  2 +-
 river/Cursor.zig                   | 48 +++++++++++------------
 river/DragIcon.zig                 |  2 +-
 river/ForeignToplevelHandle.zig    | 16 ++++----
 river/IdleInhibitManager.zig       |  2 +-
 river/IdleInhibitor.zig            |  4 +-
 river/InputConfig.zig              |  2 +-
 river/InputDevice.zig              |  8 ++--
 river/InputManager.zig             |  4 +-
 river/InputPopup.zig               |  8 ++--
 river/InputRelay.zig               | 14 +++----
 river/Keyboard.zig                 |  4 +-
 river/KeyboardGroup.zig            |  2 +-
 river/LayerSurface.zig             | 10 ++---
 river/Layout.zig                   |  2 +-
 river/LayoutManager.zig            |  2 +-
 river/LockManager.zig              |  8 ++--
 river/LockSurface.zig              |  4 +-
 river/Output.zig                   | 15 ++++----
 river/PointerConstraint.zig        |  6 +--
 river/Root.zig                     |  6 +--
 river/SceneNodeData.zig            |  2 +-
 river/Seat.zig                     | 10 ++---
 river/SeatStatus.zig               |  2 +-
 river/Server.zig                   |  9 +++--
 river/StatusManager.zig            |  2 +-
 river/Switch.zig                   |  2 +-
 river/TabletTool.zig               |  4 +-
 river/TextInput.zig                |  8 ++--
 river/Vector.zig                   |  2 +-
 river/View.zig                     |  7 ++--
 river/XdgDecoration.zig            |  4 +-
 river/XdgPopup.zig                 |  6 +--
 river/XdgToplevel.zig              | 22 +++++------
 river/XwaylandOverrideRedirect.zig | 14 +++----
 river/XwaylandView.zig             | 24 ++++++------
 river/command/output.zig           |  2 +-
 river/command/spawn.zig            | 17 ++++----
 river/main.zig                     | 61 ++++++++++++++---------------
 river/process.zig                  | 30 +++++++--------
 riverctl/main.zig                  | 18 ++++-----
 rivertile/main.zig                 | 16 ++++----
 51 files changed, 281 insertions(+), 267 deletions(-)

diff --git a/.builds/alpine.yml b/.builds/alpine.yml
index f59a12d..e365c0f 100644
--- a/.builds/alpine.yml
+++ b/.builds/alpine.yml
@@ -40,11 +40,11 @@ tasks:
       sudo ninja -C build/ install
       cd ..
 
-      wget -nv https://ziglang.org/download/0.11.0/zig-linux-x86_64-0.11.0.tar.xz
+      wget -nv https://ziglang.org/download/0.12.0/zig-linux-x86_64-0.12.0.tar.xz
       # Remove a lot of useless lines from tar output.
-      tar -xvf zig-linux-x86_64-0.11.0.tar.xz 1>/dev/null
-      sudo mv zig-linux-x86_64-0.11.0/zig /usr/bin/
-      sudo mv zig-linux-x86_64-0.11.0/lib /usr/lib/zig
+      tar -xvf zig-linux-x86_64-0.12.0.tar.xz 1>/dev/null
+      sudo mv zig-linux-x86_64-0.12.0/zig /usr/bin/
+      sudo mv zig-linux-x86_64-0.12.0/lib /usr/lib/zig
   - build: |
       cd river
       zig build
diff --git a/.builds/archlinux.yml b/.builds/archlinux.yml
index caf4795..476e0ac 100644
--- a/.builds/archlinux.yml
+++ b/.builds/archlinux.yml
@@ -38,11 +38,11 @@ tasks:
       sudo ninja -C build/ install
       cd ..
 
-      wget -nv https://ziglang.org/download/0.11.0/zig-linux-x86_64-0.11.0.tar.xz
+      wget -nv https://ziglang.org/download/0.12.0/zig-linux-x86_64-0.12.0.tar.xz
       # Remove a lot of useless lines from tar output.
-      tar -xvf zig-linux-x86_64-0.11.0.tar.xz 1>/dev/null
-      sudo mv zig-linux-x86_64-0.11.0/zig /usr/bin/
-      sudo mv zig-linux-x86_64-0.11.0/lib /usr/lib/zig
+      tar -xvf zig-linux-x86_64-0.12.0.tar.xz 1>/dev/null
+      sudo mv zig-linux-x86_64-0.12.0/zig /usr/bin/
+      sudo mv zig-linux-x86_64-0.12.0/lib /usr/lib/zig
   - build: |
       cd river
       zig build
diff --git a/.builds/freebsd.yml b/.builds/freebsd.yml
index 4ca6414..e05be88 100644
--- a/.builds/freebsd.yml
+++ b/.builds/freebsd.yml
@@ -42,11 +42,11 @@ tasks:
       sudo ninja -C build/ install
       cd ..
 
-      wget -nv https://ziglang.org/download/0.11.0/zig-freebsd-x86_64-0.11.0.tar.xz
+      wget -nv https://ziglang.org/download/0.12.0/zig-freebsd-x86_64-0.12.0.tar.xz
       # Remove a lot of useless lines from tar output.
-      tar -xvf zig-freebsd-x86_64-0.11.0.tar.xz 1>/dev/null
-      sudo mv zig-freebsd-x86_64-0.11.0/zig /usr/bin/
-      sudo mv zig-freebsd-x86_64-0.11.0/lib /usr/lib/zig
+      tar -xvf zig-freebsd-x86_64-0.12.0.tar.xz 1>/dev/null
+      sudo mv zig-freebsd-x86_64-0.12.0/zig /usr/bin/
+      sudo mv zig-freebsd-x86_64-0.12.0/lib /usr/lib/zig
   - build: |
       cd river
       zig build
diff --git a/README.md b/README.md
index d25d19f..8b8c5b9 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@ To compile river first ensure that you have the following dependencies
 installed. The "development" versions are required if applicable to your
 distribution.
 
-- [zig](https://ziglang.org/download/) 0.11
+- [zig](https://ziglang.org/download/) 0.12
 - wayland
 - wayland-protocols
 - [wlroots](https://gitlab.freedesktop.org/wlroots/wlroots) 0.17.2
diff --git a/build.zig b/build.zig
index 5dbe3c2..1b9fba9 100644
--- a/build.zig
+++ b/build.zig
@@ -64,7 +64,7 @@ pub fn build(b: *Build) !void {
         if (mem.endsWith(u8, version, "-dev")) {
             var ret: u8 = undefined;
 
-            const git_describe_long = b.execAllowFail(
+            const git_describe_long = b.runAllowFail(
                 &.{ "git", "-C", b.build_root.path orelse ".", "describe", "--long" },
                 &ret,
                 .Inherit,
@@ -91,12 +91,12 @@ pub fn build(b: *Build) !void {
     const scanner = Scanner.create(b, .{});
 
     scanner.addSystemProtocol("stable/xdg-shell/xdg-shell.xml");
+    scanner.addSystemProtocol("staging/cursor-shape/cursor-shape-v1.xml");
     scanner.addSystemProtocol("staging/ext-session-lock/ext-session-lock-v1.xml");
-    scanner.addSystemProtocol("unstable/pointer-gestures/pointer-gestures-unstable-v1.xml");
     scanner.addSystemProtocol("unstable/pointer-constraints/pointer-constraints-unstable-v1.xml");
-    scanner.addSystemProtocol("unstable/xdg-decoration/xdg-decoration-unstable-v1.xml");
+    scanner.addSystemProtocol("unstable/pointer-gestures/pointer-gestures-unstable-v1.xml");
     scanner.addSystemProtocol("unstable/tablet/tablet-unstable-v2.xml");
-    scanner.addSystemProtocol("staging/cursor-shape/cursor-shape-v1.xml");
+    scanner.addSystemProtocol("unstable/xdg-decoration/xdg-decoration-unstable-v1.xml");
 
     scanner.addCustomProtocol("protocol/river-control-unstable-v1.xml");
     scanner.addCustomProtocol("protocol/river-status-unstable-v1.xml");
@@ -131,24 +131,36 @@ pub fn build(b: *Build) !void {
     scanner.generate("zwlr_layer_shell_v1", 4);
     scanner.generate("zwlr_output_power_manager_v1", 1);
 
-    const wayland = b.createModule(.{ .source_file = scanner.result });
+    const wayland = b.createModule(.{
+        .root_source_file = scanner.result,
+        .target = target,
+    });
+
     const xkbcommon = b.createModule(.{
-        .source_file = .{ .path = "deps/zig-xkbcommon/src/xkbcommon.zig" },
+        .root_source_file = .{ .path = "deps/zig-xkbcommon/src/xkbcommon.zig" },
+        .target = target,
     });
+    xkbcommon.linkSystemLibrary("xkbcommon", .{});
+
     const pixman = b.createModule(.{
-        .source_file = .{ .path = "deps/zig-pixman/pixman.zig" },
+        .root_source_file = .{ .path = "deps/zig-pixman/pixman.zig" },
+        .target = target,
     });
+    pixman.linkSystemLibrary("pixman-1", .{});
+
     const wlroots = b.createModule(.{
-        .source_file = .{ .path = "deps/zig-wlroots/src/wlroots.zig" },
-        .dependencies = &.{
+        .root_source_file = .{ .path = "deps/zig-wlroots/src/wlroots.zig" },
+        .imports = &.{
             .{ .name = "wayland", .module = wayland },
             .{ .name = "xkbcommon", .module = xkbcommon },
             .{ .name = "pixman", .module = pixman },
         },
+        .target = target,
     });
+    wlroots.linkSystemLibrary("wlroots", .{});
 
-    const flags = b.createModule(.{ .source_file = .{ .path = "common/flags.zig" } });
-    const globber = b.createModule(.{ .source_file = .{ .path = "common/globber.zig" } });
+    const flags = b.createModule(.{ .root_source_file = .{ .path = "common/flags.zig" } });
+    const globber = b.createModule(.{ .root_source_file = .{ .path = "common/globber.zig" } });
 
     {
         const river = b.addExecutable(.{
@@ -156,38 +168,33 @@ pub fn build(b: *Build) !void {
             .root_source_file = .{ .path = "river/main.zig" },
             .target = target,
             .optimize = optimize,
+            .strip = strip,
         });
-        river.addOptions("build_options", options);
+        river.root_module.addOptions("build_options", options);
 
         river.linkLibC();
         river.linkSystemLibrary("libevdev");
         river.linkSystemLibrary("libinput");
-
-        river.addModule("wayland", wayland);
         river.linkSystemLibrary("wayland-server");
 
-        river.addModule("xkbcommon", xkbcommon);
-        river.linkSystemLibrary("xkbcommon");
-
-        river.addModule("pixman", pixman);
-        river.linkSystemLibrary("pixman-1");
+        river.root_module.addImport("wayland", wayland);
+        river.root_module.addImport("xkbcommon", xkbcommon);
+        river.root_module.addImport("pixman", pixman);
+        river.root_module.addImport("wlroots", wlroots);
+        river.root_module.addImport("flags", flags);
+        river.root_module.addImport("globber", globber);
 
-        river.addModule("wlroots", wlroots);
-        river.linkSystemLibrary("wlroots");
-
-        river.addModule("flags", flags);
-        river.addModule("globber", globber);
         river.addCSourceFile(.{
             .file = .{ .path = "river/wlroots_log_wrapper.c" },
             .flags = &.{ "-std=c99", "-O2" },
         });
+        river.linkSystemLibrary("wlroots");
 
         // TODO: remove when zig issue #131 is implemented
         scanner.addCSource(river);
 
-        river.strip = strip;
         river.pie = pie;
-        river.omit_frame_pointer = omit_frame_pointer;
+        river.root_module.omit_frame_pointer = omit_frame_pointer;
 
         b.installArtifact(river);
     }
@@ -198,19 +205,19 @@ pub fn build(b: *Build) !void {
             .root_source_file = .{ .path = "riverctl/main.zig" },
             .target = target,
             .optimize = optimize,
+            .strip = strip,
         });
-        riverctl.addOptions("build_options", options);
+        riverctl.root_module.addOptions("build_options", options);
 
-        riverctl.addModule("flags", flags);
-        riverctl.addModule("wayland", wayland);
+        riverctl.root_module.addImport("flags", flags);
+        riverctl.root_module.addImport("wayland", wayland);
         riverctl.linkLibC();
         riverctl.linkSystemLibrary("wayland-client");
 
         scanner.addCSource(riverctl);
 
-        riverctl.strip = strip;
         riverctl.pie = pie;
-        riverctl.omit_frame_pointer = omit_frame_pointer;
+        riverctl.root_module.omit_frame_pointer = omit_frame_pointer;
 
         b.installArtifact(riverctl);
     }
@@ -221,19 +228,19 @@ pub fn build(b: *Build) !void {
             .root_source_file = .{ .path = "rivertile/main.zig" },
             .target = target,
             .optimize = optimize,
+            .strip = strip,
         });
-        rivertile.addOptions("build_options", options);
+        rivertile.root_module.addOptions("build_options", options);
 
-        rivertile.addModule("flags", flags);
-        rivertile.addModule("wayland", wayland);
+        rivertile.root_module.addImport("flags", flags);
+        rivertile.root_module.addImport("wayland", wayland);
         rivertile.linkLibC();
         rivertile.linkSystemLibrary("wayland-client");
 
         scanner.addCSource(rivertile);
 
-        rivertile.strip = strip;
         rivertile.pie = pie;
-        rivertile.omit_frame_pointer = omit_frame_pointer;
+        rivertile.root_module.omit_frame_pointer = omit_frame_pointer;
 
         b.installArtifact(rivertile);
     }
diff --git a/common/flags.zig b/common/flags.zig
index 3f75e13..5b7b552 100644
--- a/common/flags.zig
+++ b/common/flags.zig
@@ -18,7 +18,7 @@ const std = @import("std");
 const mem = std.mem;
 
 pub const Flag = struct {
-    name: []const u8,
+    name: [:0]const u8,
     kind: enum { boolean, arg },
 };
 
@@ -37,7 +37,7 @@ pub fn parser(comptime Arg: type, comptime flags: []const Flag) type {
 
             pub const Flags = flags_type: {
                 var fields: []const std.builtin.Type.StructField = &.{};
-                inline for (flags) |flag| {
+                for (flags) |flag| {
                     const field: std.builtin.Type.StructField = switch (flag.kind) {
                         .boolean => .{
                             .name = flag.name,
@@ -57,7 +57,7 @@ pub fn parser(comptime Arg: type, comptime flags: []const Flag) type {
                     fields = fields ++ [_]std.builtin.Type.StructField{field};
                 }
                 break :flags_type @Type(.{ .Struct = .{
-                    .layout = .Auto,
+                    .layout = .auto,
                     .fields = fields,
                     .decls = &.{},
                     .is_tuple = false,
diff --git a/deps/zig-wayland b/deps/zig-wayland
index 73fed09..6be3eb9 160000
--- a/deps/zig-wayland
+++ b/deps/zig-wayland
@@ -1 +1 @@
-Subproject commit 73fed093301b2e5f58998aa4797ce952bd148676
+Subproject commit 6be3eb9bff878bbf3f83a7c6862f1e14233606f5
diff --git a/deps/zig-wlroots b/deps/zig-wlroots
index 5bc01a9..941859c 160000
--- a/deps/zig-wlroots
+++ b/deps/zig-wlroots
@@ -1 +1 @@
-Subproject commit 5bc01a9f597e051c0dfab6dd9991f08697794e3d
+Subproject commit 941859cd842b68cc5d20757e8708eb70295e9344
diff --git a/deps/zig-xkbcommon b/deps/zig-xkbcommon
index 7e09b38..3a2eefd 160000
--- a/deps/zig-xkbcommon
+++ b/deps/zig-xkbcommon
@@ -1 +1 @@
-Subproject commit 7e09b389373b060148c0ca050e0b525e118d91e7
+Subproject commit 3a2eefdad6b4d48757274061dd2b5df3b89a2bfd
diff --git a/river/Control.zig b/river/Control.zig
index c59a4a3..2b0d21f 100644
--- a/river/Control.zig
+++ b/river/Control.zig
@@ -48,7 +48,7 @@ pub fn init(control: *Control) !void {
 }
 
 fn handleServerDestroy(listener: *wl.Listener(*wl.Server), _: *wl.Server) void {
-    const control = @fieldParentPtr(Control, "server_destroy", listener);
+    const control: *Control = @fieldParentPtr("server_destroy", listener);
     control.global.destroy();
     control.args_map.deinit();
 }
diff --git a/river/Cursor.zig b/river/Cursor.zig
index 29e7ed9..aa031fc 100644
--- a/river/Cursor.zig
+++ b/river/Cursor.zig
@@ -19,7 +19,7 @@ const Cursor = @This();
 const build_options = @import("build_options");
 const std = @import("std");
 const assert = std.debug.assert;
-const os = std.os;
+const posix = std.posix;
 const math = std.math;
 const wlr = @import("wlroots");
 const wayland = @import("wayland");
@@ -303,7 +303,7 @@ fn clearFocus(cursor: *Cursor) void {
 
 /// Axis event is a scroll wheel or similiar
 fn handleAxis(listener: *wl.Listener(*wlr.Pointer.event.Axis), event: *wlr.Pointer.event.Axis) void {
-    const cursor = @fieldParentPtr(Cursor, "axis", listener);
+    const cursor: *Cursor = @fieldParentPtr("axis", listener);
     const device: *InputDevice = @ptrFromInt(event.device.data);
 
     cursor.seat.handleActivity();
@@ -328,7 +328,7 @@ fn handleAxis(listener: *wl.Listener(*wlr.Pointer.event.Axis), event: *wlr.Point
 }
 
 fn handleButton(listener: *wl.Listener(*wlr.Pointer.event.Button), event: *wlr.Pointer.event.Button) void {
-    const cursor = @fieldParentPtr(Cursor, "button", listener);
+    const cursor: *Cursor = @fieldParentPtr("button", listener);
 
     cursor.seat.handleActivity();
     cursor.unhide();
@@ -432,7 +432,7 @@ fn handlePinchBegin(
     listener: *wl.Listener(*wlr.Pointer.event.PinchBegin),
     event: *wlr.Pointer.event.PinchBegin,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "pinch_begin", listener);
+    const cursor: *Cursor = @fieldParentPtr("pinch_begin", listener);
     server.input_manager.pointer_gestures.sendPinchBegin(
         cursor.seat.wlr_seat,
         event.time_msec,
@@ -444,7 +444,7 @@ fn handlePinchUpdate(
     listener: *wl.Listener(*wlr.Pointer.event.PinchUpdate),
     event: *wlr.Pointer.event.PinchUpdate,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "pinch_update", listener);
+    const cursor: *Cursor = @fieldParentPtr("pinch_update", listener);
     server.input_manager.pointer_gestures.sendPinchUpdate(
         cursor.seat.wlr_seat,
         event.time_msec,
@@ -459,7 +459,7 @@ fn handlePinchEnd(
     listener: *wl.Listener(*wlr.Pointer.event.PinchEnd),
     event: *wlr.Pointer.event.PinchEnd,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "pinch_end", listener);
+    const cursor: *Cursor = @fieldParentPtr("pinch_end", listener);
     server.input_manager.pointer_gestures.sendPinchEnd(
         cursor.seat.wlr_seat,
         event.time_msec,
@@ -471,7 +471,7 @@ fn handleSwipeBegin(
     listener: *wl.Listener(*wlr.Pointer.event.SwipeBegin),
     event: *wlr.Pointer.event.SwipeBegin,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "swipe_begin", listener);
+    const cursor: *Cursor = @fieldParentPtr("swipe_begin", listener);
     server.input_manager.pointer_gestures.sendSwipeBegin(
         cursor.seat.wlr_seat,
         event.time_msec,
@@ -483,7 +483,7 @@ fn handleSwipeUpdate(
     listener: *wl.Listener(*wlr.Pointer.event.SwipeUpdate),
     event: *wlr.Pointer.event.SwipeUpdate,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "swipe_update", listener);
+    const cursor: *Cursor = @fieldParentPtr("swipe_update", listener);
     server.input_manager.pointer_gestures.sendSwipeUpdate(
         cursor.seat.wlr_seat,
         event.time_msec,
@@ -496,7 +496,7 @@ fn handleSwipeEnd(
     listener: *wl.Listener(*wlr.Pointer.event.SwipeEnd),
     event: *wlr.Pointer.event.SwipeEnd,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "swipe_end", listener);
+    const cursor: *Cursor = @fieldParentPtr("swipe_end", listener);
     server.input_manager.pointer_gestures.sendSwipeEnd(
         cursor.seat.wlr_seat,
         event.time_msec,
@@ -508,7 +508,7 @@ fn handleTouchDown(
     listener: *wl.Listener(*wlr.Touch.event.Down),
     event: *wlr.Touch.event.Down,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "touch_down", listener);
+    const cursor: *Cursor = @fieldParentPtr("touch_down", listener);
 
     cursor.seat.handleActivity();
 
@@ -544,7 +544,7 @@ fn handleTouchMotion(
     listener: *wl.Listener(*wlr.Touch.event.Motion),
     event: *wlr.Touch.event.Motion,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "touch_motion", listener);
+    const cursor: *Cursor = @fieldParentPtr("touch_motion", listener);
 
     cursor.seat.handleActivity();
 
@@ -563,7 +563,7 @@ fn handleTouchUp(
     listener: *wl.Listener(*wlr.Touch.event.Up),
     event: *wlr.Touch.event.Up,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "touch_up", listener);
+    const cursor: *Cursor = @fieldParentPtr("touch_up", listener);
 
     cursor.seat.handleActivity();
 
@@ -576,7 +576,7 @@ fn handleTouchCancel(
     listener: *wl.Listener(*wlr.Touch.event.Cancel),
     _: *wlr.Touch.event.Cancel,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "touch_cancel", listener);
+    const cursor: *Cursor = @fieldParentPtr("touch_cancel", listener);
 
     cursor.seat.handleActivity();
 
@@ -612,7 +612,7 @@ fn handleTouchCancel(
 }
 
 fn handleTouchFrame(listener: *wl.Listener(void)) void {
-    const cursor = @fieldParentPtr(Cursor, "touch_frame", listener);
+    const cursor: *Cursor = @fieldParentPtr("touch_frame", listener);
 
     cursor.seat.handleActivity();
 
@@ -624,7 +624,7 @@ fn handleTabletToolAxis(
     event: *wlr.Tablet.event.Axis,
 ) void {
     const device: *InputDevice = @ptrFromInt(event.device.data);
-    const tablet = @fieldParentPtr(Tablet, "device", device);
+    const tablet: *Tablet = @fieldParentPtr("device", device);
 
     device.seat.handleActivity();
 
@@ -638,7 +638,7 @@ fn handleTabletToolProximity(
     event: *wlr.Tablet.event.Proximity,
 ) void {
     const device: *InputDevice = @ptrFromInt(event.device.data);
-    const tablet = @fieldParentPtr(Tablet, "device", device);
+    const tablet: *Tablet = @fieldParentPtr("device", device);
 
     device.seat.handleActivity();
 
@@ -652,7 +652,7 @@ fn handleTabletToolTip(
     event: *wlr.Tablet.event.Tip,
 ) void {
     const device: *InputDevice = @ptrFromInt(event.device.data);
-    const tablet = @fieldParentPtr(Tablet, "device", device);
+    const tablet: *Tablet = @fieldParentPtr("device", device);
 
     device.seat.handleActivity();
 
@@ -666,7 +666,7 @@ fn handleTabletToolButton(
     event: *wlr.Tablet.event.Button,
 ) void {
     const device: *InputDevice = @ptrFromInt(event.device.data);
-    const tablet = @fieldParentPtr(Tablet, "device", device);
+    const tablet: *Tablet = @fieldParentPtr("device", device);
 
     device.seat.handleActivity();
 
@@ -706,7 +706,7 @@ fn handlePointerMapping(cursor: *Cursor, event: *wlr.Pointer.event.Button, view:
 /// events together. For instance, two axis events may happen at the same
 /// time, in which case a frame event won't be sent in between.
 fn handleFrame(listener: *wl.Listener(*wlr.Cursor), _: *wlr.Cursor) void {
-    const cursor = @fieldParentPtr(Cursor, "frame", listener);
+    const cursor: *Cursor = @fieldParentPtr("frame", listener);
     cursor.seat.wlr_seat.pointerNotifyFrame();
 }
 
@@ -720,7 +720,7 @@ fn handleMotionAbsolute(
     listener: *wl.Listener(*wlr.Pointer.event.MotionAbsolute),
     event: *wlr.Pointer.event.MotionAbsolute,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "motion_absolute", listener);
+    const cursor: *Cursor = @fieldParentPtr("motion_absolute", listener);
 
     cursor.seat.handleActivity();
 
@@ -739,7 +739,7 @@ fn handleMotion(
     listener: *wl.Listener(*wlr.Pointer.event.Motion),
     event: *wlr.Pointer.event.Motion,
 ) void {
-    const cursor = @fieldParentPtr(Cursor, "motion", listener);
+    const cursor: *Cursor = @fieldParentPtr("motion", listener);
 
     cursor.seat.handleActivity();
 
@@ -751,7 +751,7 @@ fn handleRequestSetCursor(
     event: *wlr.Seat.event.RequestSetCursor,
 ) void {
     // This event is rasied by the seat when a client provides a cursor image
-    const cursor = @fieldParentPtr(Cursor, "request_set_cursor", listener);
+    const cursor: *Cursor = @fieldParentPtr("request_set_cursor", listener);
     const focused_client = cursor.seat.wlr_seat.pointer_state.focused_client;
 
     // This can be sent by any client, so we check to make sure this one is
@@ -1111,8 +1111,8 @@ pub fn updateState(cursor: *Cursor) void {
         .passthrough => {
             cursor.updateFocusFollowsCursorTarget();
             if (!cursor.hidden) {
-                var now: os.timespec = undefined;
-                os.clock_gettime(os.CLOCK.MONOTONIC, &now) catch @panic("CLOCK_MONOTONIC not supported");
+                var now: posix.timespec = undefined;
+                posix.clock_gettime(posix.CLOCK.MONOTONIC, &now) catch @panic("CLOCK_MONOTONIC not supported");
                 const msec: u32 = @intCast(now.tv_sec * std.time.ms_per_s +
                     @divTrunc(now.tv_nsec, std.time.ns_per_ms));
                 cursor.passthrough(msec);
diff --git a/river/DragIcon.zig b/river/DragIcon.zig
index 2505e4b..eae4059 100644
--- a/river/DragIcon.zig
+++ b/river/DragIcon.zig
@@ -71,7 +71,7 @@ pub fn updatePosition(drag_icon: *DragIcon, cursor: *Cursor) void {
 }
 
 fn handleDestroy(listener: *wl.Listener(*wlr.Drag.Icon), _: *wlr.Drag.Icon) void {
-    const drag_icon = @fieldParentPtr(DragIcon, "destroy", listener);
+    const drag_icon: *DragIcon = @fieldParentPtr("destroy", listener);
 
     drag_icon.destroy.link.remove();
 
diff --git a/river/ForeignToplevelHandle.zig b/river/ForeignToplevelHandle.zig
index dcf88cb..a49c8a1 100644
--- a/river/ForeignToplevelHandle.zig
+++ b/river/ForeignToplevelHandle.zig
@@ -36,7 +36,7 @@ foreign_close: wl.Listener(*wlr.ForeignToplevelHandleV1) =
     wl.Listener(*wlr.ForeignToplevelHandleV1).init(handleForeignClose),
 
 pub fn map(handle: *ForeignToplevelHandle) void {
-    const view = @fieldParentPtr(View, "foreign_toplevel_handle", handle);
+    const view: *View = @fieldParentPtr("foreign_toplevel_handle", handle);
 
     assert(handle.wlr_handle == null);
 
@@ -67,7 +67,7 @@ pub fn unmap(handle: *ForeignToplevelHandle) void {
 
 /// Must be called just before the view's inflight state is made current.
 pub fn update(handle: *ForeignToplevelHandle) void {
-    const view = @fieldParentPtr(View, "foreign_toplevel_handle", handle);
+    const view: *View = @fieldParentPtr("foreign_toplevel_handle", handle);
 
     const wlr_handle = handle.wlr_handle orelse return;
 
@@ -87,8 +87,8 @@ fn handleForeignActivate(
     listener: *wl.Listener(*wlr.ForeignToplevelHandleV1.event.Activated),
     event: *wlr.ForeignToplevelHandleV1.event.Activated,
 ) void {
-    const handle = @fieldParentPtr(ForeignToplevelHandle, "foreign_activate", listener);
-    const view = @fieldParentPtr(View, "foreign_toplevel_handle", handle);
+    const handle: *ForeignToplevelHandle = @fieldParentPtr("foreign_activate", listener);
+    const view: *View = @fieldParentPtr("foreign_toplevel_handle", handle);
     const seat: *Seat = @ptrFromInt(event.seat.data);
 
     seat.focus(view);
@@ -99,8 +99,8 @@ fn handleForeignFullscreen(
     listener: *wl.Listener(*wlr.ForeignToplevelHandleV1.event.Fullscreen),
     event: *wlr.ForeignToplevelHandleV1.event.Fullscreen,
 ) void {
-    const handle = @fieldParentPtr(ForeignToplevelHandle, "foreign_fullscreen", listener);
-    const view = @fieldParentPtr(View, "foreign_toplevel_handle", handle);
+    const handle: *ForeignToplevelHandle = @fieldParentPtr("foreign_fullscreen", listener);
+    const view: *View = @fieldParentPtr("foreign_toplevel_handle", handle);
 
     view.pending.fullscreen = event.fullscreen;
     server.root.applyPending();
@@ -110,8 +110,8 @@ fn handleForeignClose(
     listener: *wl.Listener(*wlr.ForeignToplevelHandleV1),
     _: *wlr.ForeignToplevelHandleV1,
 ) void {
-    const handle = @fieldParentPtr(ForeignToplevelHandle, "foreign_close", listener);
-    const view = @fieldParentPtr(View, "foreign_toplevel_handle", handle);
+    const handle: *ForeignToplevelHandle = @fieldParentPtr("foreign_close", listener);
+    const view: *View = @fieldParentPtr("foreign_toplevel_handle", handle);
 
     view.close();
 }
diff --git a/river/IdleInhibitManager.zig b/river/IdleInhibitManager.zig
index 5a3c4ba..475d833 100644
--- a/river/IdleInhibitManager.zig
+++ b/river/IdleInhibitManager.zig
@@ -78,7 +78,7 @@ pub fn checkActive(inhibit_manager: *IdleInhibitManager) void {
 }
 
 fn handleNewIdleInhibitor(listener: *wl.Listener(*wlr.IdleInhibitorV1), inhibitor: *wlr.IdleInhibitorV1) void {
-    const inhibit_manager = @fieldParentPtr(IdleInhibitManager, "new_idle_inhibitor", listener);
+    const inhibit_manager: *IdleInhibitManager = @fieldParentPtr("new_idle_inhibitor", listener);
     const inhibitor_node = util.gpa.create(std.TailQueue(IdleInhibitor).Node) catch return;
     inhibitor_node.data.init(inhibitor, inhibit_manager) catch {
         util.gpa.destroy(inhibitor_node);
diff --git a/river/IdleInhibitor.zig b/river/IdleInhibitor.zig
index e59d728..4babaa3 100644
--- a/river/IdleInhibitor.zig
+++ b/river/IdleInhibitor.zig
@@ -45,11 +45,11 @@ pub fn init(
 }
 
 fn handleDestroy(listener: *wl.Listener(*wlr.Surface), _: *wlr.Surface) void {
-    const inhibitor = @fieldParentPtr(IdleInhibitor, "destroy", listener);
+    const inhibitor: *IdleInhibitor = @fieldParentPtr("destroy", listener);
 
     inhibitor.destroy.link.remove();
 
-    const node = @fieldParentPtr(std.TailQueue(IdleInhibitor).Node, "data", inhibitor);
+    const node: *std.TailQueue(IdleInhibitor).Node = @fieldParentPtr("data", inhibitor);
     server.idle_inhibit_manager.inhibitors.remove(node);
 
     inhibitor.inhibit_manager.checkActive();
diff --git a/river/InputConfig.zig b/river/InputConfig.zig
index 5cbe27b..6922081 100644
--- a/river/InputConfig.zig
+++ b/river/InputConfig.zig
@@ -241,7 +241,7 @@ pub const MapToOutput = struct {
                 device.seat.cursor.wlr_cursor.mapInputToOutput(device.wlr_device, wlr_output);
 
                 if (device.wlr_device.type == .tablet_tool) {
-                    const tablet = @fieldParentPtr(Tablet, "device", device);
+                    const tablet: *Tablet = @fieldParentPtr("device", device);
                     tablet.output_mapping = wlr_output;
                 }
             },
diff --git a/river/InputDevice.zig b/river/InputDevice.zig
index 685a671..f3d9924 100644
--- a/river/InputDevice.zig
+++ b/river/InputDevice.zig
@@ -125,13 +125,13 @@ fn isKeyboardGroup(wlr_device: *wlr.InputDevice) bool {
 }
 
 fn handleDestroy(listener: *wl.Listener(*wlr.InputDevice), _: *wlr.InputDevice) void {
-    const device = @fieldParentPtr(InputDevice, "destroy", listener);
+    const device: *InputDevice = @fieldParentPtr("destroy", listener);
 
     log.debug("removed input device: {s}", .{device.identifier});
 
     switch (device.wlr_device.type) {
         .keyboard => {
-            const keyboard = @fieldParentPtr(Keyboard, "device", device);
+            const keyboard: *Keyboard = @fieldParentPtr("device", device);
             keyboard.deinit();
             util.gpa.destroy(keyboard);
         },
@@ -140,11 +140,11 @@ fn handleDestroy(listener: *wl.Listener(*wlr.InputDevice), _: *wlr.InputDevice)
             util.gpa.destroy(device);
         },
         .tablet_tool => {
-            const tablet = @fieldParentPtr(Tablet, "device", device);
+            const tablet: *Tablet = @fieldParentPtr("device", device);
             tablet.destroy();
         },
         .switch_device => {
-            const switch_device = @fieldParentPtr(Switch, "device", device);
+            const switch_device: *Switch = @fieldParentPtr("device", device);
             switch_device.deinit();
             util.gpa.destroy(switch_device);
         },
diff --git a/river/InputManager.zig b/river/InputManager.zig
index ff7bb05..6368c63 100644
--- a/river/InputManager.zig
+++ b/river/InputManager.zig
@@ -158,7 +158,7 @@ pub fn reconfigureDevices(input_manager: *InputManager) void {
 }
 
 fn handleNewInput(listener: *wl.Listener(*wlr.InputDevice), wlr_device: *wlr.InputDevice) void {
-    const input_manager = @fieldParentPtr(InputManager, "new_input", listener);
+    const input_manager: *InputManager = @fieldParentPtr("new_input", listener);
 
     input_manager.defaultSeat().addDevice(wlr_device);
 }
@@ -167,7 +167,7 @@ fn handleNewVirtualPointer(
     listener: *wl.Listener(*wlr.VirtualPointerManagerV1.event.NewPointer),
     event: *wlr.VirtualPointerManagerV1.event.NewPointer,
 ) void {
-    const input_manager = @fieldParentPtr(InputManager, "new_virtual_pointer", listener);
+    const input_manager: *InputManager = @fieldParentPtr("new_virtual_pointer", listener);
 
     // TODO Support multiple seats and don't ignore
     if (event.suggested_seat != null) {
diff --git a/river/InputPopup.zig b/river/InputPopup.zig
index 79a517d..0e35753 100644
--- a/river/InputPopup.zig
+++ b/river/InputPopup.zig
@@ -61,7 +61,7 @@ pub fn create(wlr_popup: *wlr.InputPopupSurfaceV2, input_relay: *InputRelay) !vo
 }
 
 fn handleDestroy(listener: *wl.Listener(void)) void {
-    const input_popup = @fieldParentPtr(InputPopup, "destroy", listener);
+    const input_popup: *InputPopup = @fieldParentPtr("destroy", listener);
 
     input_popup.destroy.link.remove();
     input_popup.map.link.remove();
@@ -74,19 +74,19 @@ fn handleDestroy(listener: *wl.Listener(void)) void {
 }
 
 fn handleMap(listener: *wl.Listener(void)) void {
-    const input_popup = @fieldParentPtr(InputPopup, "map", listener);
+    const input_popup: *InputPopup = @fieldParentPtr("map", listener);
 
     input_popup.update();
 }
 
 fn handleUnmap(listener: *wl.Listener(void)) void {
-    const input_popup = @fieldParentPtr(InputPopup, "unmap", listener);
+    const input_popup: *InputPopup = @fieldParentPtr("unmap", listener);
 
     input_popup.surface_tree.node.reparent(server.root.hidden.tree);
 }
 
 fn handleCommit(listener: *wl.Listener(*wlr.Surface), _: *wlr.Surface) void {
-    const input_popup = @fieldParentPtr(InputPopup, "commit", listener);
+    const input_popup: *InputPopup = @fieldParentPtr("commit", listener);
 
     input_popup.update();
 }
diff --git a/river/InputRelay.zig b/river/InputRelay.zig
index cebb46c..69d655d 100644
--- a/river/InputRelay.zig
+++ b/river/InputRelay.zig
@@ -66,7 +66,7 @@ pub fn init(relay: *InputRelay) void {
 }
 
 pub fn newInputMethod(relay: *InputRelay, input_method: *wlr.InputMethodV2) void {
-    const seat = @fieldParentPtr(Seat, "relay", relay);
+    const seat: *Seat = @fieldParentPtr("relay", relay);
 
     log.debug("new input method on seat {s}", .{seat.wlr_seat.name});
 
@@ -93,7 +93,7 @@ fn handleInputMethodCommit(
     listener: *wl.Listener(*wlr.InputMethodV2),
     input_method: *wlr.InputMethodV2,
 ) void {
-    const relay = @fieldParentPtr(InputRelay, "input_method_commit", listener);
+    const relay: *InputRelay = @fieldParentPtr("input_method_commit", listener);
     assert(input_method == relay.input_method);
 
     if (!input_method.client_active) return;
@@ -127,7 +127,7 @@ fn handleInputMethodDestroy(
     listener: *wl.Listener(*wlr.InputMethodV2),
     input_method: *wlr.InputMethodV2,
 ) void {
-    const relay = @fieldParentPtr(InputRelay, "input_method_destroy", listener);
+    const relay: *InputRelay = @fieldParentPtr("input_method_destroy", listener);
     assert(input_method == relay.input_method);
 
     relay.input_method_commit.link.remove();
@@ -145,8 +145,8 @@ fn handleInputMethodGrabKeyboard(
     listener: *wl.Listener(*wlr.InputMethodV2.KeyboardGrab),
     keyboard_grab: *wlr.InputMethodV2.KeyboardGrab,
 ) void {
-    const relay = @fieldParentPtr(InputRelay, "grab_keyboard", listener);
-    const seat = @fieldParentPtr(Seat, "relay", relay);
+    const relay: *InputRelay = @fieldParentPtr("grab_keyboard", listener);
+    const seat: *Seat = @fieldParentPtr("relay", relay);
 
     const active_keyboard = seat.wlr_seat.getKeyboard();
     keyboard_grab.setKeyboard(active_keyboard);
@@ -158,7 +158,7 @@ fn handleInputMethodNewPopup(
     listener: *wl.Listener(*wlr.InputPopupSurfaceV2),
     wlr_popup: *wlr.InputPopupSurfaceV2,
 ) void {
-    const relay = @fieldParentPtr(InputRelay, "input_method_new_popup", listener);
+    const relay: *InputRelay = @fieldParentPtr("input_method_new_popup", listener);
 
     InputPopup.create(wlr_popup, relay) catch {
         log.err("out of memory", .{});
@@ -170,7 +170,7 @@ fn handleInputMethodGrabKeyboardDestroy(
     listener: *wl.Listener(*wlr.InputMethodV2.KeyboardGrab),
     keyboard_grab: *wlr.InputMethodV2.KeyboardGrab,
 ) void {
-    const relay = @fieldParentPtr(InputRelay, "grab_keyboard_destroy", listener);
+    const relay: *InputRelay = @fieldParentPtr("grab_keyboard_destroy", listener);
     relay.grab_keyboard_destroy.link.remove();
 
     if (keyboard_grab.keyboard) |keyboard| {
diff --git a/river/Keyboard.zig b/river/Keyboard.zig
index 4bc3a10..3c659d8 100644
--- a/river/Keyboard.zig
+++ b/river/Keyboard.zig
@@ -146,7 +146,7 @@ pub fn deinit(keyboard: *Keyboard) void {
 
 fn handleKey(listener: *wl.Listener(*wlr.Keyboard.event.Key), event: *wlr.Keyboard.event.Key) void {
     // This event is raised when a key is pressed or released.
-    const keyboard = @fieldParentPtr(Keyboard, "key", listener);
+    const keyboard: *Keyboard = @fieldParentPtr("key", listener);
     const wlr_keyboard = keyboard.device.wlr_device.toKeyboard();
 
     // If the keyboard is in a group, this event will be handled by the group's Keyboard instance.
@@ -247,7 +247,7 @@ fn isModifier(keysym: xkb.Keysym) bool {
 }
 
 fn handleModifiers(listener: *wl.Listener(*wlr.Keyboard), _: *wlr.Keyboard) void {
-    const keyboard = @fieldParentPtr(Keyboard, "modifiers", listener);
+    const keyboard: *Keyboard = @fieldParentPtr("modifiers", listener);
     const wlr_keyboard = keyboard.device.wlr_device.toKeyboard();
 
     // If the keyboard is in a group, this event will be handled by the group's Keyboard instance.
diff --git a/river/KeyboardGroup.zig b/river/KeyboardGroup.zig
index cf68bde..5f79608 100644
--- a/river/KeyboardGroup.zig
+++ b/river/KeyboardGroup.zig
@@ -72,7 +72,7 @@ pub fn destroy(group: *KeyboardGroup) void {
 
     group.wlr_group.destroy();
 
-    const node = @fieldParentPtr(std.TailQueue(KeyboardGroup).Node, "data", group);
+    const node: *std.TailQueue(KeyboardGroup).Node = @fieldParentPtr("data", group);
     group.seat.keyboard_groups.remove(node);
     util.gpa.destroy(node);
 }
diff --git a/river/LayerSurface.zig b/river/LayerSurface.zig
index 3ab20dc..03d243d 100644
--- a/river/LayerSurface.zig
+++ b/river/LayerSurface.zig
@@ -80,7 +80,7 @@ pub fn destroyPopups(layer_surface: *LayerSurface) void {
 }
 
 fn handleDestroy(listener: *wl.Listener(*wlr.LayerSurfaceV1), _: *wlr.LayerSurfaceV1) void {
-    const layer_surface = @fieldParentPtr(LayerSurface, "destroy", listener);
+    const layer_surface: *LayerSurface = @fieldParentPtr("destroy", listener);
 
     log.debug("layer surface '{s}' destroyed", .{layer_surface.wlr_layer_surface.namespace});
 
@@ -97,7 +97,7 @@ fn handleDestroy(listener: *wl.Listener(*wlr.LayerSurfaceV1), _: *wlr.LayerSurfa
 }
 
 fn handleMap(listener: *wl.Listener(void)) void {
-    const layer_surface = @fieldParentPtr(LayerSurface, "map", listener);
+    const layer_surface: *LayerSurface = @fieldParentPtr("map", listener);
 
     log.debug("layer surface '{s}' mapped", .{layer_surface.wlr_layer_surface.namespace});
 
@@ -107,7 +107,7 @@ fn handleMap(listener: *wl.Listener(void)) void {
 }
 
 fn handleUnmap(listener: *wl.Listener(void)) void {
-    const layer_surface = @fieldParentPtr(LayerSurface, "unmap", listener);
+    const layer_surface: *LayerSurface = @fieldParentPtr("unmap", listener);
 
     log.debug("layer surface '{s}' unmapped", .{layer_surface.wlr_layer_surface.namespace});
 
@@ -117,7 +117,7 @@ fn handleUnmap(listener: *wl.Listener(void)) void {
 }
 
 fn handleCommit(listener: *wl.Listener(*wlr.Surface), _: *wlr.Surface) void {
-    const layer_surface = @fieldParentPtr(LayerSurface, "commit", listener);
+    const layer_surface: *LayerSurface = @fieldParentPtr("commit", listener);
     const wlr_layer_surface = layer_surface.wlr_layer_surface;
 
     assert(wlr_layer_surface.output != null);
@@ -186,7 +186,7 @@ fn handleKeyboardInteractiveExclusive(output: *Output) void {
 }
 
 fn handleNewPopup(listener: *wl.Listener(*wlr.XdgPopup), wlr_xdg_popup: *wlr.XdgPopup) void {
-    const layer_surface = @fieldParentPtr(LayerSurface, "new_popup", listener);
+    const layer_surface: *LayerSurface = @fieldParentPtr("new_popup", listener);
 
     XdgPopup.create(
         wlr_xdg_popup,
diff --git a/river/Layout.zig b/river/Layout.zig
index 11626c6..858cd08 100644
--- a/river/Layout.zig
+++ b/river/Layout.zig
@@ -186,7 +186,7 @@ pub fn destroy(layout: *Layout) void {
     );
 
     // Remove layout from the list
-    const node = @fieldParentPtr(std.TailQueue(Layout).Node, "data", layout);
+    const node: *std.TailQueue(Layout).Node = @fieldParentPtr("data", layout);
     layout.output.layouts.remove(node);
 
     // If we are the currently active layout of an output, clean up.
diff --git a/river/LayoutManager.zig b/river/LayoutManager.zig
index 0073752..d994d28 100644
--- a/river/LayoutManager.zig
+++ b/river/LayoutManager.zig
@@ -44,7 +44,7 @@ pub fn init(layout_manager: *LayoutManager) !void {
 }
 
 fn handleServerDestroy(listener: *wl.Listener(*wl.Server), _: *wl.Server) void {
-    const layout_manager = @fieldParentPtr(LayoutManager, "server_destroy", listener);
+    const layout_manager: *LayoutManager = @fieldParentPtr("server_destroy", listener);
     layout_manager.global.destroy();
 }
 
diff --git a/river/LockManager.zig b/river/LockManager.zig
index 6d60e67..efd1efb 100644
--- a/river/LockManager.zig
+++ b/river/LockManager.zig
@@ -85,7 +85,7 @@ pub fn deinit(manager: *LockManager) void {
 }
 
 fn handleLock(listener: *wl.Listener(*wlr.SessionLockV1), lock: *wlr.SessionLockV1) void {
-    const manager = @fieldParentPtr(LockManager, "new_lock", listener);
+    const manager: *LockManager = @fieldParentPtr("new_lock", listener);
 
     if (manager.lock != null) {
         log.info("denying new session lock client, an active one already exists", .{});
@@ -191,7 +191,7 @@ pub fn maybeLock(manager: *LockManager) void {
 }
 
 fn handleUnlock(listener: *wl.Listener(void)) void {
-    const manager = @fieldParentPtr(LockManager, "unlock", listener);
+    const manager: *LockManager = @fieldParentPtr("unlock", listener);
 
     manager.state = .unlocked;
 
@@ -229,7 +229,7 @@ fn handleUnlock(listener: *wl.Listener(void)) void {
 }
 
 fn handleDestroy(listener: *wl.Listener(void)) void {
-    const manager = @fieldParentPtr(LockManager, "destroy", listener);
+    const manager: *LockManager = @fieldParentPtr("destroy", listener);
 
     log.debug("ext_session_lock_v1 destroyed", .{});
 
@@ -248,7 +248,7 @@ fn handleSurface(
     listener: *wl.Listener(*wlr.SessionLockSurfaceV1),
     wlr_lock_surface: *wlr.SessionLockSurfaceV1,
 ) void {
-    const manager = @fieldParentPtr(LockManager, "new_surface", listener);
+    const manager: *LockManager = @fieldParentPtr("new_surface", listener);
 
     log.debug("new ext_session_lock_surface_v1 created", .{});
 
diff --git a/river/LockSurface.zig b/river/LockSurface.zig
index 9c8ec94..c3cd384 100644
--- a/river/LockSurface.zig
+++ b/river/LockSurface.zig
@@ -100,7 +100,7 @@ pub fn configure(lock_surface: *LockSurface) void {
 }
 
 fn handleMap(listener: *wl.Listener(void)) void {
-    const lock_surface = @fieldParentPtr(LockSurface, "map", listener);
+    const lock_surface: *LockSurface = @fieldParentPtr("map", listener);
     const output = lock_surface.getOutput();
 
     output.normal_content.node.setEnabled(false);
@@ -132,7 +132,7 @@ fn updateFocus(lock_surface: *LockSurface) void {
 }
 
 fn handleDestroy(listener: *wl.Listener(void)) void {
-    const lock_surface = @fieldParentPtr(LockSurface, "surface_destroy", listener);
+    const lock_surface: *LockSurface = @fieldParentPtr("surface_destroy", listener);
 
     lock_surface.destroy();
 }
diff --git a/river/Output.zig b/river/Output.zig
index 1403e61..b235c1e 100644
--- a/river/Output.zig
+++ b/river/Output.zig
@@ -20,6 +20,7 @@ const std = @import("std");
 const assert = std.debug.assert;
 const math = std.math;
 const mem = std.mem;
+const posix = std.posix;
 const fmt = std.fmt;
 const wlr = @import("wlroots");
 const wayland = @import("wayland");
@@ -401,7 +402,7 @@ fn sendLayerConfigures(
 }
 
 fn handleDestroy(listener: *wl.Listener(*wlr.Output), _: *wlr.Output) void {
-    const output = @fieldParentPtr(Output, "destroy", listener);
+    const output: *Output = @fieldParentPtr("destroy", listener);
 
     log.debug("output '{s}' destroyed", .{output.wlr_output.name});
 
@@ -436,7 +437,7 @@ fn handleDestroy(listener: *wl.Listener(*wlr.Output), _: *wlr.Output) void {
 }
 
 fn handleRequestState(listener: *wl.Listener(*wlr.Output.event.RequestState), event: *wlr.Output.event.RequestState) void {
-    const output = @fieldParentPtr(Output, "request_state", listener);
+    const output: *Output = @fieldParentPtr("request_state", listener);
 
     output.applyState(event.state) catch {
         log.err("failed to commit requested state", .{});
@@ -514,12 +515,12 @@ pub fn updateBackgroundRect(output: *Output) void {
     output.layers.background_color_rect.setSize(width, height);
 
     var it = output.layers.fullscreen.children.iterator(.forward);
-    const fullscreen_background = @fieldParentPtr(wlr.SceneRect, "node", it.next().?);
+    const fullscreen_background: *wlr.SceneRect = @fieldParentPtr("node", it.next().?);
     fullscreen_background.setSize(width, height);
 }
 
 fn handleFrame(listener: *wl.Listener(*wlr.Output), _: *wlr.Output) void {
-    const output = @fieldParentPtr(Output, "frame", listener);
+    const output: *Output = @fieldParentPtr("frame", listener);
     const scene_output = server.root.scene.getSceneOutput(output.wlr_output).?;
 
     // TODO this should probably be retried on failure
@@ -528,8 +529,8 @@ fn handleFrame(listener: *wl.Listener(*wlr.Output), _: *wlr.Output) void {
         error.CommitFailed => log.err("output commit failed for {s}", .{output.wlr_output.name}),
     };
 
-    var now: std.os.timespec = undefined;
-    std.os.clock_gettime(std.os.CLOCK.MONOTONIC, &now) catch @panic("CLOCK_MONOTONIC not supported");
+    var now: posix.timespec = undefined;
+    posix.clock_gettime(posix.CLOCK.MONOTONIC, &now) catch @panic("CLOCK_MONOTONIC not supported");
     scene_output.sendFrameDone(&now);
 }
 
@@ -591,7 +592,7 @@ fn handlePresent(
     listener: *wl.Listener(*wlr.Output.event.Present),
     event: *wlr.Output.event.Present,
 ) void {
-    const output = @fieldParentPtr(Output, "present", listener);
+    const output: *Output = @fieldParentPtr("present", listener);
 
     if (!event.presented) {
         return;
diff --git a/river/PointerConstraint.zig b/river/PointerConstraint.zig
index 4f640e7..b35b29f 100644
--- a/river/PointerConstraint.zig
+++ b/river/PointerConstraint.zig
@@ -182,14 +182,14 @@ fn warpToHintIfSet(constraint: *PointerConstraint) void {
 }
 
 fn handleNodeDestroy(listener: *wl.Listener(void)) void {
-    const constraint = @fieldParentPtr(PointerConstraint, "node_destroy", listener);
+    const constraint: *PointerConstraint = @fieldParentPtr("node_destroy", listener);
 
     log.info("deactivating pointer constraint, scene node destroyed", .{});
     constraint.deactivate();
 }
 
 fn handleDestroy(listener: *wl.Listener(*wlr.PointerConstraintV1), _: *wlr.PointerConstraintV1) void {
-    const constraint = @fieldParentPtr(PointerConstraint, "destroy", listener);
+    const constraint: *PointerConstraint = @fieldParentPtr("destroy", listener);
     const seat: *Seat = @ptrFromInt(constraint.wlr_constraint.seat.data);
 
     if (constraint.state == .active) {
@@ -211,7 +211,7 @@ fn handleDestroy(listener: *wl.Listener(*wlr.PointerConstraintV1), _: *wlr.Point
 }
 
 fn handleSetRegion(listener: *wl.Listener(void)) void {
-    const constraint = @fieldParentPtr(PointerConstraint, "set_region", listener);
+    const constraint: *PointerConstraint = @fieldParentPtr("set_region", listener);
     const seat: *Seat = @ptrFromInt(constraint.wlr_constraint.seat.data);
 
     switch (constraint.state) {
diff --git a/river/Root.zig b/river/Root.zig
index 6d2dd8f..7b87741 100644
--- a/river/Root.zig
+++ b/river/Root.zig
@@ -740,7 +740,7 @@ fn commitTransaction(root: *Root) void {
 // We need this listener to deal with outputs that have their position auto-configured
 // by the wlr_output_layout.
 fn handleLayoutChange(listener: *wl.Listener(*wlr.OutputLayout), _: *wlr.OutputLayout) void {
-    const root = @fieldParentPtr(Root, "layout_change", listener);
+    const root: *Root = @fieldParentPtr("layout_change", listener);
 
     root.handleOutputConfigChange() catch std.log.err("out of memory", .{});
 }
@@ -775,7 +775,7 @@ fn handleManagerApply(
     listener: *wl.Listener(*wlr.OutputConfigurationV1),
     config: *wlr.OutputConfigurationV1,
 ) void {
-    const root = @fieldParentPtr(Root, "manager_apply", listener);
+    const root: *Root = @fieldParentPtr("manager_apply", listener);
     defer config.destroy();
 
     std.log.scoped(.output_manager).info("applying output configuration", .{});
@@ -789,7 +789,7 @@ fn handleManagerTest(
     listener: *wl.Listener(*wlr.OutputConfigurationV1),
     config: *wlr.OutputConfigurationV1,
 ) void {
-    const root = @fieldParentPtr(Root, "manager_test", listener);
+    const root: *Root = @fieldParentPtr("manager_test", listener);
     defer config.destroy();
 
     root.processOutputConfig(config, .test_only);
diff --git a/river/SceneNodeData.zig b/river/SceneNodeData.zig
index c90ff65..68d5923 100644
--- a/river/SceneNodeData.zig
+++ b/river/SceneNodeData.zig
@@ -73,7 +73,7 @@ pub fn fromSurface(surface: *wlr.Surface) ?*SceneNodeData {
 }
 
 fn handleDestroy(listener: *wl.Listener(void)) void {
-    const scene_node_data = @fieldParentPtr(SceneNodeData, "destroy", listener);
+    const scene_node_data: *SceneNodeData = @fieldParentPtr("destroy", listener);
 
     scene_node_data.destroy.link.remove();
     scene_node_data.node.data = 0;
diff --git a/river/Seat.zig b/river/Seat.zig
index 6fc7c65..ff77cce 100644
--- a/river/Seat.zig
+++ b/river/Seat.zig
@@ -540,7 +540,7 @@ fn handleRequestSetSelection(
     listener: *wl.Listener(*wlr.Seat.event.RequestSetSelection),
     event: *wlr.Seat.event.RequestSetSelection,
 ) void {
-    const seat = @fieldParentPtr(Seat, "request_set_selection", listener);
+    const seat: *Seat = @fieldParentPtr("request_set_selection", listener);
     seat.wlr_seat.setSelection(event.source, event.serial);
 }
 
@@ -548,7 +548,7 @@ fn handleRequestStartDrag(
     listener: *wl.Listener(*wlr.Seat.event.RequestStartDrag),
     event: *wlr.Seat.event.RequestStartDrag,
 ) void {
-    const seat = @fieldParentPtr(Seat, "request_start_drag", listener);
+    const seat: *Seat = @fieldParentPtr("request_start_drag", listener);
 
     // The start_drag request is ignored by wlroots if a drag is currently in progress.
     assert(seat.drag == .none);
@@ -572,7 +572,7 @@ fn handleRequestStartDrag(
 }
 
 fn handleStartDrag(listener: *wl.Listener(*wlr.Drag), wlr_drag: *wlr.Drag) void {
-    const seat = @fieldParentPtr(Seat, "start_drag", listener);
+    const seat: *Seat = @fieldParentPtr("start_drag", listener);
 
     assert(seat.drag == .none);
     switch (wlr_drag.grab_type) {
@@ -595,7 +595,7 @@ fn handleStartDrag(listener: *wl.Listener(*wlr.Drag), wlr_drag: *wlr.Drag) void
 }
 
 fn handleDragDestroy(listener: *wl.Listener(*wlr.Drag), _: *wlr.Drag) void {
-    const seat = @fieldParentPtr(Seat, "drag_destroy", listener);
+    const seat: *Seat = @fieldParentPtr("drag_destroy", listener);
     seat.drag_destroy.link.remove();
 
     switch (seat.drag) {
@@ -613,6 +613,6 @@ fn handleRequestSetPrimarySelection(
     listener: *wl.Listener(*wlr.Seat.event.RequestSetPrimarySelection),
     event: *wlr.Seat.event.RequestSetPrimarySelection,
 ) void {
-    const seat = @fieldParentPtr(Seat, "request_set_primary_selection", listener);
+    const seat: *Seat = @fieldParentPtr("request_set_primary_selection", listener);
     seat.wlr_seat.setPrimarySelection(event.source, event.serial);
 }
diff --git a/river/SeatStatus.zig b/river/SeatStatus.zig
index 1941774..0c8b3eb 100644
--- a/river/SeatStatus.zig
+++ b/river/SeatStatus.zig
@@ -49,7 +49,7 @@ fn handleRequest(seat_status_v1: *zriver.SeatStatusV1, request: zriver.SeatStatu
 }
 
 fn handleDestroy(_: *zriver.SeatStatusV1, seat_status: *SeatStatus) void {
-    const node = @fieldParentPtr(std.SinglyLinkedList(SeatStatus).Node, "data", seat_status);
+    const node: *std.SinglyLinkedList(SeatStatus).Node = @fieldParentPtr("data", seat_status);
     seat_status.seat.status_trackers.remove(node);
     util.gpa.destroy(node);
 }
diff --git a/river/Server.zig b/river/Server.zig
index 895f1cc..7b46f3f 100644
--- a/river/Server.zig
+++ b/river/Server.zig
@@ -19,6 +19,7 @@ const Server = @This();
 const build_options = @import("build_options");
 const std = @import("std");
 const assert = std.debug.assert;
+const posix = std.posix;
 const wlr = @import("wlroots");
 const wl = @import("wayland").server.wl;
 
@@ -122,8 +123,8 @@ pub fn init(server: *Server, runtime_xwayland: bool) !void {
     const loop = wl_server.getEventLoop();
     server.* = .{
         .wl_server = wl_server,
-        .sigint_source = try loop.addSignal(*wl.Server, std.os.SIG.INT, terminate, wl_server),
-        .sigterm_source = try loop.addSignal(*wl.Server, std.os.SIG.TERM, terminate, wl_server),
+        .sigint_source = try loop.addSignal(*wl.Server, posix.SIG.INT, terminate, wl_server),
+        .sigterm_source = try loop.addSignal(*wl.Server, posix.SIG.TERM, terminate, wl_server),
 
         .backend = backend,
         .session = session,
@@ -371,7 +372,7 @@ fn handleNewToplevelDecoration(
 }
 
 fn handleNewLayerSurface(listener: *wl.Listener(*wlr.LayerSurfaceV1), wlr_layer_surface: *wlr.LayerSurfaceV1) void {
-    const server = @fieldParentPtr(Server, "new_layer_surface", listener);
+    const server: *Server = @fieldParentPtr("new_layer_surface", listener);
 
     log.debug(
         "new layer surface: namespace {s}, layer {s}, anchor {b:0>4}, size {},{}, margin {},{},{},{}, exclusive_zone {}",
@@ -431,7 +432,7 @@ fn handleRequestActivate(
     listener: *wl.Listener(*wlr.XdgActivationV1.event.RequestActivate),
     event: *wlr.XdgActivationV1.event.RequestActivate,
 ) void {
-    const server = @fieldParentPtr(Server, "request_activate", listener);
+    const server: *Server = @fieldParentPtr("request_activate", listener);
 
     const node_data = SceneNodeData.fromSurface(event.surface) orelse return;
     switch (node_data.data) {
diff --git a/river/StatusManager.zig b/river/StatusManager.zig
index 43d5367..4464431 100644
--- a/river/StatusManager.zig
+++ b/river/StatusManager.zig
@@ -46,7 +46,7 @@ pub fn init(status_manager: *StatusManager) !void {
 }
 
 fn handleServerDestroy(listener: *wl.Listener(*wl.Server), _: *wl.Server) void {
-    const status_manager = @fieldParentPtr(StatusManager, "server_destroy", listener);
+    const status_manager: *StatusManager = @fieldParentPtr("server_destroy", listener);
     status_manager.global.destroy();
 }
 
diff --git a/river/Switch.zig b/river/Switch.zig
index 17e1b8c..470511c 100644
--- a/river/Switch.zig
+++ b/river/Switch.zig
@@ -71,7 +71,7 @@ pub fn deinit(switch_device: *Switch) void {
 }
 
 fn handleToggle(listener: *wl.Listener(*wlr.Switch.event.Toggle), event: *wlr.Switch.event.Toggle) void {
-    const switch_device = @fieldParentPtr(Switch, "toggle", listener);
+    const switch_device: *Switch = @fieldParentPtr("toggle", listener);
 
     switch_device.device.seat.handleActivity();
 
diff --git a/river/TabletTool.zig b/river/TabletTool.zig
index 7693875..1642469 100644
--- a/river/TabletTool.zig
+++ b/river/TabletTool.zig
@@ -90,7 +90,7 @@ fn create(wlr_seat: *wlr.Seat, wlr_tool: *wlr.TabletTool) error{OutOfMemory}!*Ta
 }
 
 fn handleDestroy(listener: *wl.Listener(*wlr.TabletTool), _: *wlr.TabletTool) void {
-    const tool = @fieldParentPtr(TabletTool, "destroy", listener);
+    const tool: *TabletTool = @fieldParentPtr("destroy", listener);
 
     tool.wp_tool.wlr_tool.data = 0;
 
@@ -106,7 +106,7 @@ fn handleSetCursor(
     listener: *wl.Listener(*wlr.TabletV2TabletTool.event.SetCursor),
     event: *wlr.TabletV2TabletTool.event.SetCursor,
 ) void {
-    const tool = @fieldParentPtr(TabletTool, "set_cursor", listener);
+    const tool: *TabletTool = @fieldParentPtr("set_cursor", listener);
 
     if (tool.wp_tool.focused_surface == null or
         tool.wp_tool.focused_surface.?.resource.getClient() != event.seat_client.client)
diff --git a/river/TextInput.zig b/river/TextInput.zig
index d513758..1364454 100644
--- a/river/TextInput.zig
+++ b/river/TextInput.zig
@@ -63,7 +63,7 @@ pub fn create(wlr_text_input: *wlr.TextInputV3) !void {
 }
 
 fn handleEnable(listener: *wl.Listener(*wlr.TextInputV3), _: *wlr.TextInputV3) void {
-    const text_input = @fieldParentPtr(TextInput, "enable", listener);
+    const text_input: *TextInput = @fieldParentPtr("enable", listener);
     const seat: *Seat = @ptrFromInt(text_input.wlr_text_input.seat.data);
 
     if (text_input.wlr_text_input.focused_surface == null) {
@@ -90,7 +90,7 @@ fn handleEnable(listener: *wl.Listener(*wlr.TextInputV3), _: *wlr.TextInputV3) v
 }
 
 fn handleCommit(listener: *wl.Listener(*wlr.TextInputV3), _: *wlr.TextInputV3) void {
-    const text_input = @fieldParentPtr(TextInput, "commit", listener);
+    const text_input: *TextInput = @fieldParentPtr("commit", listener);
     const seat: *Seat = @ptrFromInt(text_input.wlr_text_input.seat.data);
 
     if (seat.relay.text_input != text_input) {
@@ -104,7 +104,7 @@ fn handleCommit(listener: *wl.Listener(*wlr.TextInputV3), _: *wlr.TextInputV3) v
 }
 
 fn handleDisable(listener: *wl.Listener(*wlr.TextInputV3), _: *wlr.TextInputV3) void {
-    const text_input = @fieldParentPtr(TextInput, "disable", listener);
+    const text_input: *TextInput = @fieldParentPtr("disable", listener);
     const seat: *Seat = @ptrFromInt(text_input.wlr_text_input.seat.data);
 
     if (seat.relay.text_input == text_input) {
@@ -113,7 +113,7 @@ fn handleDisable(listener: *wl.Listener(*wlr.TextInputV3), _: *wlr.TextInputV3)
 }
 
 fn handleDestroy(listener: *wl.Listener(*wlr.TextInputV3), _: *wlr.TextInputV3) void {
-    const text_input = @fieldParentPtr(TextInput, "destroy", listener);
+    const text_input: *TextInput = @fieldParentPtr("destroy", listener);
     const seat: *Seat = @ptrFromInt(text_input.wlr_text_input.seat.data);
 
     if (seat.relay.text_input == text_input) {
diff --git a/river/Vector.zig b/river/Vector.zig
index 17fe011..932cba9 100644
--- a/river/Vector.zig
+++ b/river/Vector.zig
@@ -44,7 +44,7 @@ pub fn direction(v: Vector) ?wlr.OutputLayout.Direction {
     // A zero length vector has no direction
     if (v.x == 0 and v.y == 0) return null;
 
-    if ((math.absInt(v.y) catch return null) > (math.absInt(v.x) catch return null)) {
+    if (@abs(v.y) > @abs(v.x)) {
         // Careful: We are operating in a Y-inverted coordinate system.
         return if (v.y > 0) .down else .up;
     } else {
diff --git a/river/View.zig b/river/View.zig
index b0542ad..bb02da0 100644
--- a/river/View.zig
+++ b/river/View.zig
@@ -20,7 +20,7 @@ const build_options = @import("build_options");
 const std = @import("std");
 const assert = std.debug.assert;
 const math = std.math;
-const os = std.os;
+const posix = std.posix;
 const wlr = @import("wlroots");
 const wl = @import("wayland").server.wl;
 
@@ -472,8 +472,9 @@ pub fn rootSurface(view: View) ?*wlr.Surface {
 
 pub fn sendFrameDone(view: View) void {
     assert(view.mapped and !view.destroying);
-    var now: os.timespec = undefined;
-    os.clock_gettime(os.CLOCK.MONOTONIC, &now) catch @panic("CLOCK_MONOTONIC not supported");
+
+    var now: posix.timespec = undefined;
+    posix.clock_gettime(posix.CLOCK.MONOTONIC, &now) catch @panic("CLOCK_MONOTONIC not supported");
     view.rootSurface().?.sendFrameDone(&now);
 }
 
diff --git a/river/XdgDecoration.zig b/river/XdgDecoration.zig
index eb434cf..8ea55de 100644
--- a/river/XdgDecoration.zig
+++ b/river/XdgDecoration.zig
@@ -66,7 +66,7 @@ fn handleDestroy(
     listener: *wl.Listener(*wlr.XdgToplevelDecorationV1),
     _: *wlr.XdgToplevelDecorationV1,
 ) void {
-    const decoration = @fieldParentPtr(XdgDecoration, "destroy", listener);
+    const decoration: *XdgDecoration = @fieldParentPtr("destroy", listener);
 
     decoration.deinit();
 }
@@ -75,7 +75,7 @@ fn handleRequestMode(
     listener: *wl.Listener(*wlr.XdgToplevelDecorationV1),
     _: *wlr.XdgToplevelDecorationV1,
 ) void {
-    const decoration = @fieldParentPtr(XdgDecoration, "request_mode", listener);
+    const decoration: *XdgDecoration = @fieldParentPtr("request_mode", listener);
 
     const toplevel: *XdgToplevel = @ptrFromInt(decoration.wlr_decoration.toplevel.base.data);
     const view = toplevel.view;
diff --git a/river/XdgPopup.zig b/river/XdgPopup.zig
index c539cc9..5198e9b 100644
--- a/river/XdgPopup.zig
+++ b/river/XdgPopup.zig
@@ -61,7 +61,7 @@ pub fn create(
 }
 
 fn handleDestroy(listener: *wl.Listener(void)) void {
-    const xdg_popup = @fieldParentPtr(XdgPopup, "destroy", listener);
+    const xdg_popup: *XdgPopup = @fieldParentPtr("destroy", listener);
 
     xdg_popup.destroy.link.remove();
     xdg_popup.new_popup.link.remove();
@@ -71,7 +71,7 @@ fn handleDestroy(listener: *wl.Listener(void)) void {
 }
 
 fn handleNewPopup(listener: *wl.Listener(*wlr.XdgPopup), wlr_xdg_popup: *wlr.XdgPopup) void {
-    const xdg_popup = @fieldParentPtr(XdgPopup, "new_popup", listener);
+    const xdg_popup: *XdgPopup = @fieldParentPtr("new_popup", listener);
 
     XdgPopup.create(
         wlr_xdg_popup,
@@ -84,7 +84,7 @@ fn handleNewPopup(listener: *wl.Listener(*wlr.XdgPopup), wlr_xdg_popup: *wlr.Xdg
 }
 
 fn handleReposition(listener: *wl.Listener(void)) void {
-    const xdg_popup = @fieldParentPtr(XdgPopup, "reposition", listener);
+    const xdg_popup: *XdgPopup = @fieldParentPtr("reposition", listener);
 
     const output = switch (SceneNodeData.fromNode(&xdg_popup.root.node).?.data) {
         .view => |view| view.current.output orelse return,
diff --git a/river/XdgToplevel.zig b/river/XdgToplevel.zig
index 909845a..da3bf92 100644
--- a/river/XdgToplevel.zig
+++ b/river/XdgToplevel.zig
@@ -200,7 +200,7 @@ pub fn destroyPopups(toplevel: XdgToplevel) void {
 }
 
 fn handleDestroy(listener: *wl.Listener(void)) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "destroy", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("destroy", listener);
 
     // This can be be non-null here if the client commits a protocol error or
     // if it exits without destroying its wayland objects.
@@ -223,7 +223,7 @@ fn handleDestroy(listener: *wl.Listener(void)) void {
 }
 
 fn handleMap(listener: *wl.Listener(void)) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "map", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("map", listener);
     const view = toplevel.view;
 
     // Add listeners that are only active while mapped
@@ -266,7 +266,7 @@ fn handleMap(listener: *wl.Listener(void)) void {
 
 /// Called when the surface is unmapped and will no longer be displayed.
 fn handleUnmap(listener: *wl.Listener(void)) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "unmap", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("unmap", listener);
 
     // Remove listeners that are only active while mapped
     toplevel.ack_configure.link.remove();
@@ -281,7 +281,7 @@ fn handleUnmap(listener: *wl.Listener(void)) void {
 }
 
 fn handleNewPopup(listener: *wl.Listener(*wlr.XdgPopup), wlr_xdg_popup: *wlr.XdgPopup) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "new_popup", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("new_popup", listener);
 
     XdgPopup.create(wlr_xdg_popup, toplevel.view.popup_tree, toplevel.view.popup_tree) catch {
         wlr_xdg_popup.resource.postNoMemory();
@@ -293,7 +293,7 @@ fn handleAckConfigure(
     listener: *wl.Listener(*wlr.XdgSurface.Configure),
     acked_configure: *wlr.XdgSurface.Configure,
 ) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "ack_configure", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("ack_configure", listener);
     switch (toplevel.configure_state) {
         .inflight => |serial| if (acked_configure.serial == serial) {
             toplevel.configure_state = .acked;
@@ -306,7 +306,7 @@ fn handleAckConfigure(
 }
 
 fn handleCommit(listener: *wl.Listener(*wlr.Surface), _: *wlr.Surface) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "commit", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("commit", listener);
     const view = toplevel.view;
 
     {
@@ -395,7 +395,7 @@ fn handleCommit(listener: *wl.Listener(*wlr.Surface), _: *wlr.Surface) void {
 /// Called when the client asks to be fullscreened. We always honor the request
 /// for now, perhaps it should be denied in some cases in the future.
 fn handleRequestFullscreen(listener: *wl.Listener(void)) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "request_fullscreen", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("request_fullscreen", listener);
     if (toplevel.view.pending.fullscreen != toplevel.wlr_toplevel.requested.fullscreen) {
         toplevel.view.pending.fullscreen = toplevel.wlr_toplevel.requested.fullscreen;
         server.root.applyPending();
@@ -406,7 +406,7 @@ fn handleRequestMove(
     listener: *wl.Listener(*wlr.XdgToplevel.event.Move),
     event: *wlr.XdgToplevel.event.Move,
 ) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "request_move", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("request_move", listener);
     const seat: *Seat = @ptrFromInt(event.seat.seat.data);
     const view = toplevel.view;
 
@@ -429,7 +429,7 @@ fn handleRequestMove(
 }
 
 fn handleRequestResize(listener: *wl.Listener(*wlr.XdgToplevel.event.Resize), event: *wlr.XdgToplevel.event.Resize) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "request_resize", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("request_resize", listener);
     const seat: *Seat = @ptrFromInt(event.seat.seat.data);
     const view = toplevel.view;
 
@@ -453,12 +453,12 @@ fn handleRequestResize(listener: *wl.Listener(*wlr.XdgToplevel.event.Resize), ev
 
 /// Called when the client sets / updates its title
 fn handleSetTitle(listener: *wl.Listener(void)) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "set_title", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("set_title", listener);
     toplevel.view.notifyTitle();
 }
 
 /// Called when the client sets / updates its app_id
 fn handleSetAppId(listener: *wl.Listener(void)) void {
-    const toplevel = @fieldParentPtr(XdgToplevel, "set_app_id", listener);
+    const toplevel: *XdgToplevel = @fieldParentPtr("set_app_id", listener);
     toplevel.view.notifyAppId();
 }
diff --git a/river/XwaylandOverrideRedirect.zig b/river/XwaylandOverrideRedirect.zig
index 8a05548..ff638a3 100644
--- a/river/XwaylandOverrideRedirect.zig
+++ b/river/XwaylandOverrideRedirect.zig
@@ -78,7 +78,7 @@ fn handleRequestConfigure(
 }
 
 fn handleDestroy(listener: *wl.Listener(void)) void {
-    const override_redirect = @fieldParentPtr(XwaylandOverrideRedirect, "destroy", listener);
+    const override_redirect: *XwaylandOverrideRedirect = @fieldParentPtr("destroy", listener);
 
     override_redirect.request_configure.link.remove();
     override_redirect.destroy.link.remove();
@@ -90,21 +90,21 @@ fn handleDestroy(listener: *wl.Listener(void)) void {
 }
 
 fn handleAssociate(listener: *wl.Listener(void)) void {
-    const override_redirect = @fieldParentPtr(XwaylandOverrideRedirect, "associate", listener);
+    const override_redirect: *XwaylandOverrideRedirect = @fieldParentPtr("associate", listener);
 
     override_redirect.xwayland_surface.surface.?.events.map.add(&override_redirect.map);
     override_redirect.xwayland_surface.surface.?.events.unmap.add(&override_redirect.unmap);
 }
 
 fn handleDissociate(listener: *wl.Listener(void)) void {
-    const override_redirect = @fieldParentPtr(XwaylandOverrideRedirect, "dissociate", listener);
+    const override_redirect: *XwaylandOverrideRedirect = @fieldParentPtr("dissociate", listener);
 
     override_redirect.map.link.remove();
     override_redirect.unmap.link.remove();
 }
 
 pub fn handleMap(listener: *wl.Listener(void)) void {
-    const override_redirect = @fieldParentPtr(XwaylandOverrideRedirect, "map", listener);
+    const override_redirect: *XwaylandOverrideRedirect = @fieldParentPtr("map", listener);
 
     override_redirect.mapImpl() catch {
         log.err("out of memory", .{});
@@ -155,7 +155,7 @@ pub fn focusIfDesired(override_redirect: *XwaylandOverrideRedirect) void {
 }
 
 fn handleUnmap(listener: *wl.Listener(void)) void {
-    const override_redirect = @fieldParentPtr(XwaylandOverrideRedirect, "unmap", listener);
+    const override_redirect: *XwaylandOverrideRedirect = @fieldParentPtr("unmap", listener);
 
     override_redirect.set_geometry.link.remove();
 
@@ -180,7 +180,7 @@ fn handleUnmap(listener: *wl.Listener(void)) void {
 }
 
 fn handleSetGeometry(listener: *wl.Listener(void)) void {
-    const override_redirect = @fieldParentPtr(XwaylandOverrideRedirect, "set_geometry", listener);
+    const override_redirect: *XwaylandOverrideRedirect = @fieldParentPtr("set_geometry", listener);
 
     override_redirect.surface_tree.?.node.setPosition(
         override_redirect.xwayland_surface.x,
@@ -189,7 +189,7 @@ fn handleSetGeometry(listener: *wl.Listener(void)) void {
 }
 
 fn handleSetOverrideRedirect(listener: *wl.Listener(void)) void {
-    const override_redirect = @fieldParentPtr(XwaylandOverrideRedirect, "set_override_redirect", listener);
+    const override_redirect: *XwaylandOverrideRedirect = @fieldParentPtr("set_override_redirect", listener);
     const xwayland_surface = override_redirect.xwayland_surface;
 
     log.debug("xwayland surface unset override redirect", .{});
diff --git a/river/XwaylandView.zig b/river/XwaylandView.zig
index 7155868..80cecc6 100644
--- a/river/XwaylandView.zig
+++ b/river/XwaylandView.zig
@@ -131,7 +131,7 @@ fn setActivated(xwayland_view: XwaylandView, activated: bool) void {
 }
 
 fn handleDestroy(listener: *wl.Listener(void)) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "destroy", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("destroy", listener);
 
     // Remove listeners that are active for the entire lifetime of the view
     xwayland_view.destroy.link.remove();
@@ -146,20 +146,20 @@ fn handleDestroy(listener: *wl.Listener(void)) void {
 }
 
 fn handleAssociate(listener: *wl.Listener(void)) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "associate", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("associate", listener);
 
     xwayland_view.xwayland_surface.surface.?.events.map.add(&xwayland_view.map);
     xwayland_view.xwayland_surface.surface.?.events.unmap.add(&xwayland_view.unmap);
 }
 
 fn handleDissociate(listener: *wl.Listener(void)) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "dissociate", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("dissociate", listener);
     xwayland_view.map.link.remove();
     xwayland_view.unmap.link.remove();
 }
 
 pub fn handleMap(listener: *wl.Listener(void)) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "map", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("map", listener);
     const view = xwayland_view.view;
 
     const xwayland_surface = xwayland_view.xwayland_surface;
@@ -213,7 +213,7 @@ pub fn handleMap(listener: *wl.Listener(void)) void {
 }
 
 fn handleUnmap(listener: *wl.Listener(void)) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "unmap", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("unmap", listener);
 
     xwayland_view.xwayland_surface.surface.?.data = 0;
 
@@ -235,7 +235,7 @@ fn handleRequestConfigure(
     listener: *wl.Listener(*wlr.XwaylandSurface.event.Configure),
     event: *wlr.XwaylandSurface.event.Configure,
 ) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "request_configure", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("request_configure", listener);
 
     // If unmapped, let the client do whatever it wants
     if (xwayland_view.xwayland_surface.surface == null or
@@ -254,7 +254,7 @@ fn handleRequestConfigure(
 }
 
 fn handleSetOverrideRedirect(listener: *wl.Listener(void)) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "set_override_redirect", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("set_override_redirect", listener);
     const xwayland_surface = xwayland_view.xwayland_surface;
 
     log.debug("xwayland surface set override redirect", .{});
@@ -276,17 +276,17 @@ fn handleSetOverrideRedirect(listener: *wl.Listener(void)) void {
 }
 
 fn handleSetTitle(listener: *wl.Listener(void)) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "set_title", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("set_title", listener);
     xwayland_view.view.notifyTitle();
 }
 
 fn handleSetClass(listener: *wl.Listener(void)) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "set_class", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("set_class", listener);
     xwayland_view.view.notifyAppId();
 }
 
 fn handleSetDecorations(listener: *wl.Listener(void)) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "set_decorations", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("set_decorations", listener);
     const view = xwayland_view.view;
 
     const ssd = server.config.rules.ssd.match(view) orelse
@@ -299,7 +299,7 @@ fn handleSetDecorations(listener: *wl.Listener(void)) void {
 }
 
 fn handleRequestFullscreen(listener: *wl.Listener(void)) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "request_fullscreen", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("request_fullscreen", listener);
     if (xwayland_view.view.pending.fullscreen != xwayland_view.xwayland_surface.fullscreen) {
         xwayland_view.view.pending.fullscreen = xwayland_view.xwayland_surface.fullscreen;
         server.root.applyPending();
@@ -314,6 +314,6 @@ fn handleRequestMinimize(
     listener: *wl.Listener(*wlr.XwaylandSurface.event.Minimize),
     event: *wlr.XwaylandSurface.event.Minimize,
 ) void {
-    const xwayland_view = @fieldParentPtr(XwaylandView, "request_minimize", listener);
+    const xwayland_view: *XwaylandView = @fieldParentPtr("request_minimize", listener);
     xwayland_view.xwayland_surface.setMinimized(event.minimize);
 }
diff --git a/river/command/output.zig b/river/command/output.zig
index 3e10635..8f7cd0e 100644
--- a/river/command/output.zig
+++ b/river/command/output.zig
@@ -109,7 +109,7 @@ fn getOutput(seat: *Seat, str: []const u8) !?*Output {
                 .previous => link.prev.?,
             };
         }
-        return @fieldParentPtr(Output, "active_link", link);
+        return @as(*Output, @fieldParentPtr("active_link", link));
     } else if (std.meta.stringToEnum(wlr.OutputLayout.Direction, str)) |direction| { // Spacial direction
         var focus_box: wlr.Box = undefined;
         server.root.output_layout.getBox(seat.focused_output.?.wlr_output, &focus_box);
diff --git a/river/command/spawn.zig b/river/command/spawn.zig
index e62bf2f..030535a 100644
--- a/river/command/spawn.zig
+++ b/river/command/spawn.zig
@@ -15,7 +15,7 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 const std = @import("std");
-const os = std.os;
+const posix = std.posix;
 
 const c = @import("../c.zig");
 const util = @import("../util.zig");
@@ -35,23 +35,26 @@ pub fn spawn(
 
     const child_args = [_:null]?[*:0]const u8{ "/bin/sh", "-c", args[1], null };
 
-    const pid = os.fork() catch {
+    const pid = posix.fork() catch {
         out.* = try std.fmt.allocPrint(util.gpa, "fork/execve failed", .{});
         return Error.Other;
     };
 
     if (pid == 0) {
         process.cleanupChild();
-        const pid2 = os.fork() catch c._exit(1);
-        if (pid2 == 0) os.execveZ("/bin/sh", &child_args, std.c.environ) catch c._exit(1);
+
+        const pid2 = posix.fork() catch c._exit(1);
+        if (pid2 == 0) {
+            posix.execveZ("/bin/sh", &child_args, std.c.environ) catch c._exit(1);
+        }
 
         c._exit(0);
     }
 
     // Wait the intermediate child.
-    const ret = os.waitpid(pid, 0);
-    if (!os.W.IFEXITED(ret.status) or
-        (os.W.IFEXITED(ret.status) and os.W.EXITSTATUS(ret.status) != 0))
+    const ret = posix.waitpid(pid, 0);
+    if (!posix.W.IFEXITED(ret.status) or
+        (posix.W.IFEXITED(ret.status) and posix.W.EXITSTATUS(ret.status) != 0))
     {
         out.* = try std.fmt.allocPrint(util.gpa, "fork/execve failed", .{});
         return Error.Other;
diff --git a/river/main.zig b/river/main.zig
index 74579bf..19d23b5 100644
--- a/river/main.zig
+++ b/river/main.zig
@@ -20,7 +20,7 @@ const mem = std.mem;
 const fs = std.fs;
 const io = std.io;
 const log = std.log;
-const os = std.os;
+const posix = std.posix;
 const builtin = @import("builtin");
 const wlr = @import("wlroots");
 const flags = @import("flags");
@@ -57,23 +57,23 @@ pub fn main() anyerror!void {
         .{ .name = "c", .kind = .arg },
         .{ .name = "log-level", .kind = .arg },
         .{ .name = "no-xwayland", .kind = .boolean },
-    }).parse(os.argv[1..]) catch {
+    }).parse(std.os.argv[1..]) catch {
         try io.getStdErr().writeAll(usage);
-        os.exit(1);
+        posix.exit(1);
     };
     if (result.flags.h) {
         try io.getStdOut().writeAll(usage);
-        os.exit(0);
+        posix.exit(0);
     }
     if (result.args.len != 0) {
         log.err("unknown option '{s}'", .{result.args[0]});
         try io.getStdErr().writeAll(usage);
-        os.exit(1);
+        posix.exit(1);
     }
 
     if (result.flags.version) {
         try io.getStdOut().writeAll(build_options.version ++ "\n");
-        os.exit(0);
+        posix.exit(0);
     }
     if (result.flags.@"log-level") |level| {
         if (mem.eql(u8, level, "error")) {
@@ -87,7 +87,7 @@ pub fn main() anyerror!void {
         } else {
             log.err("invalid log level '{s}'", .{level});
             try io.getStdErr().writeAll(usage);
-            os.exit(1);
+            posix.exit(1);
         }
     }
     const enable_xwayland = !result.flags.@"no-xwayland";
@@ -119,16 +119,16 @@ pub fn main() anyerror!void {
     const child_pgid = if (startup_command) |cmd| blk: {
         log.info("running init executable '{s}'", .{cmd});
         const child_args = [_:null]?[*:0]const u8{ "/bin/sh", "-c", cmd, null };
-        const pid = try os.fork();
+        const pid = try posix.fork();
         if (pid == 0) {
             process.cleanupChild();
-            os.execveZ("/bin/sh", &child_args, std.c.environ) catch c._exit(1);
+            posix.execveZ("/bin/sh", &child_args, std.c.environ) catch c._exit(1);
         }
         util.gpa.free(cmd);
         // Since the child has called setsid, the pid is the pgid
         break :blk pid;
     } else null;
-    defer if (child_pgid) |pgid| os.kill(-pgid, os.SIG.TERM) catch |err| {
+    defer if (child_pgid) |pgid| posix.kill(-pgid, posix.SIG.TERM) catch |err| {
         log.err("failed to kill init process group: {s}", .{@errorName(err)});
     };
 
@@ -141,20 +141,20 @@ pub fn main() anyerror!void {
 
 fn defaultInitPath() !?[:0]const u8 {
     const path = blk: {
-        if (os.getenv("XDG_CONFIG_HOME")) |xdg_config_home| {
+        if (posix.getenv("XDG_CONFIG_HOME")) |xdg_config_home| {
             break :blk try fs.path.joinZ(util.gpa, &[_][]const u8{ xdg_config_home, "river/init" });
-        } else if (os.getenv("HOME")) |home| {
+        } else if (posix.getenv("HOME")) |home| {
             break :blk try fs.path.joinZ(util.gpa, &[_][]const u8{ home, ".config/river/init" });
         } else {
             return null;
         }
     };
 
-    os.accessZ(path, os.X_OK) catch |err| {
+    posix.accessZ(path, posix.X_OK) catch |err| {
         if (err == error.PermissionDenied) {
-            if (os.accessZ(path, os.R_OK)) {
+            if (posix.accessZ(path, posix.R_OK)) {
                 log.err("failed to run init executable {s}: the file is not executable", .{path});
-                os.exit(1);
+                posix.exit(1);
             } else |_| {}
         }
         log.err("failed to run init executable {s}: {s}", .{ path, @errorName(err) });
@@ -171,24 +171,25 @@ var runtime_log_level: log.Level = switch (builtin.mode) {
     .ReleaseSafe, .ReleaseFast, .ReleaseSmall => .info,
 };
 
-pub const std_options = struct {
-    /// Tell std.log to leave all log level filtering to us.
-    pub const log_level: log.Level = .debug;
+pub const std_options: std.Options = .{
+    // Tell std.log to leave all log level filtering to us.
+    .log_level = .debug,
+    .logFn = logFn,
+};
 
-    pub fn logFn(
-        comptime level: log.Level,
-        comptime scope: @TypeOf(.EnumLiteral),
-        comptime format: []const u8,
-        args: anytype,
-    ) void {
-        if (@intFromEnum(level) > @intFromEnum(runtime_log_level)) return;
+pub fn logFn(
+    comptime level: log.Level,
+    comptime scope: @TypeOf(.EnumLiteral),
+    comptime format: []const u8,
+    args: anytype,
+) void {
+    if (@intFromEnum(level) > @intFromEnum(runtime_log_level)) return;
 
-        const scope_prefix = if (scope == .default) ": " else "(" ++ @tagName(scope) ++ "): ";
+    const scope_prefix = if (scope == .default) ": " else "(" ++ @tagName(scope) ++ "): ";
 
-        const stderr = io.getStdErr().writer();
-        stderr.print(level.asText() ++ scope_prefix ++ format ++ "\n", args) catch {};
-    }
-};
+    const stderr = io.getStdErr().writer();
+    stderr.print(level.asText() ++ scope_prefix ++ format ++ "\n", args) catch {};
+}
 
 /// See wlroots_log_wrapper.c
 extern fn river_init_wlroots_log(importance: wlr.log.Importance) void;
diff --git a/river/process.zig b/river/process.zig
index 27316c1..c83f61f 100644
--- a/river/process.zig
+++ b/river/process.zig
@@ -15,21 +15,21 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 const std = @import("std");
-const os = std.os;
+const posix = std.posix;
 
 const c = @import("c.zig");
 
-var original_rlimit: ?os.rlimit = null;
+var original_rlimit: ?posix.rlimit = null;
 
 pub fn setup() void {
     // Ignore SIGPIPE so we don't get killed when writing to a socket that
     // has had its read end closed by another process.
-    const sig_ign = os.Sigaction{
-        .handler = .{ .handler = os.SIG.IGN },
-        .mask = os.empty_sigset,
+    const sig_ign = posix.Sigaction{
+        .handler = .{ .handler = posix.SIG.IGN },
+        .mask = posix.empty_sigset,
         .flags = 0,
     };
-    os.sigaction(os.SIG.PIPE, &sig_ign, null) catch unreachable;
+    posix.sigaction(posix.SIG.PIPE, &sig_ign, null) catch unreachable;
 
     // Most unix systems have a default limit of 1024 file descriptors and it
     // seems unlikely for this default to be universally raised due to the
@@ -41,13 +41,13 @@ pub fn setup() void {
     // to catch any fd leaks. Therefore, don't use some crazy high limit that
     // can never be reached before the system runs out of memory. This can be
     // raised further if anyone reaches it in practice.
-    if (os.getrlimit(.NOFILE)) |original| {
+    if (posix.getrlimit(.NOFILE)) |original| {
         original_rlimit = original;
-        const new: os.rlimit = .{
+        const new: posix.rlimit = .{
             .cur = @min(4096, original.max),
             .max = original.max,
         };
-        if (os.setrlimit(.NOFILE, new)) {
+        if (posix.setrlimit(.NOFILE, new)) {
             std.log.info("raised file descriptor limit of the river process to {d}", .{new.cur});
         } else |_| {
             std.log.err("setrlimit failed, using system default file descriptor limit of {d}", .{
@@ -61,17 +61,17 @@ pub fn setup() void {
 
 pub fn cleanupChild() void {
     if (c.setsid() < 0) unreachable;
-    if (os.system.sigprocmask(os.SIG.SETMASK, &os.empty_sigset, null) < 0) unreachable;
+    if (posix.system.sigprocmask(posix.SIG.SETMASK, &posix.empty_sigset, null) < 0) unreachable;
 
-    const sig_dfl = os.Sigaction{
-        .handler = .{ .handler = os.SIG.DFL },
-        .mask = os.empty_sigset,
+    const sig_dfl = posix.Sigaction{
+        .handler = .{ .handler = posix.SIG.DFL },
+        .mask = posix.empty_sigset,
         .flags = 0,
     };
-    os.sigaction(os.SIG.PIPE, &sig_dfl, null) catch unreachable;
+    posix.sigaction(posix.SIG.PIPE, &sig_dfl, null) catch unreachable;
 
     if (original_rlimit) |original| {
-        os.setrlimit(.NOFILE, original) catch {
+        posix.setrlimit(.NOFILE, original) catch {
             std.log.err("failed to restore original file descriptor limit for " ++
                 "child process, setrlimit failed", .{});
         };
diff --git a/riverctl/main.zig b/riverctl/main.zig
index b0511b4..13a36ae 100644
--- a/riverctl/main.zig
+++ b/riverctl/main.zig
@@ -17,7 +17,7 @@
 const std = @import("std");
 const mem = std.mem;
 const io = std.io;
-const os = std.os;
+const posix = std.posix;
 const assert = std.debug.assert;
 const builtin = @import("builtin");
 
@@ -57,7 +57,7 @@ pub fn main() !void {
             , .{}),
             error.ConnectFailed => {
                 std.log.err("Unable to connect to the Wayland server.", .{});
-                if (os.getenvZ("WAYLAND_DISPLAY") == null) {
+                if (posix.getenvZ("WAYLAND_DISPLAY") == null) {
                     fatal("WAYLAND_DISPLAY is not set.", .{});
                 } else {
                     fatal("Does WAYLAND_DISPLAY contain the socket name of a running server?", .{});
@@ -72,17 +72,17 @@ fn _main() !void {
     const result = flags.parser([*:0]const u8, &.{
         .{ .name = "h", .kind = .boolean },
         .{ .name = "version", .kind = .boolean },
-    }).parse(os.argv[1..]) catch {
+    }).parse(std.os.argv[1..]) catch {
         try io.getStdErr().writeAll(usage);
-        os.exit(1);
+        posix.exit(1);
     };
     if (result.flags.h) {
         try io.getStdOut().writeAll(usage);
-        os.exit(0);
+        posix.exit(0);
     }
     if (result.flags.version) {
         try io.getStdOut().writeAll(@import("build_options").version ++ "\n");
-        os.exit(0);
+        posix.exit(0);
     }
 
     const display = try wl.Display.connect(null);
@@ -128,14 +128,14 @@ fn callbackListener(_: *zriver.CommandCallbackV1, event: zriver.CommandCallbackV
                 const stdout = io.getStdOut().writer();
                 stdout.print("{s}\n", .{success.output}) catch @panic("failed to write to stdout");
             }
-            os.exit(0);
+            posix.exit(0);
         },
         .failure => |failure| {
             // A small hack to provide usage text when river reports an unknown command.
             if (mem.orderZ(u8, failure.failure_message, "unknown command") == .eq) {
                 std.log.err("unknown command", .{});
                 io.getStdErr().writeAll(usage) catch {};
-                os.exit(1);
+                posix.exit(1);
             }
             fatal("{s}", .{failure.failure_message});
         },
@@ -144,5 +144,5 @@ fn callbackListener(_: *zriver.CommandCallbackV1, event: zriver.CommandCallbackV
 
 fn fatal(comptime format: []const u8, args: anytype) noreturn {
     std.log.err(format, args);
-    os.exit(1);
+    posix.exit(1);
 }
diff --git a/rivertile/main.zig b/rivertile/main.zig
index a2caf8e..2590e7e 100644
--- a/rivertile/main.zig
+++ b/rivertile/main.zig
@@ -39,7 +39,7 @@ const std = @import("std");
 const fmt = std.fmt;
 const mem = std.mem;
 const math = std.math;
-const os = std.os;
+const posix = std.posix;
 const assert = std.debug.assert;
 
 const wayland = @import("wayland");
@@ -311,19 +311,19 @@ pub fn main() !void {
         .{ .name = "main-location", .kind = .arg },
         .{ .name = "main-count", .kind = .arg },
         .{ .name = "main-ratio", .kind = .arg },
-    }).parse(os.argv[1..]) catch {
+    }).parse(std.os.argv[1..]) catch {
         try std.io.getStdErr().writeAll(usage);
-        os.exit(1);
+        posix.exit(1);
     };
     if (result.flags.h) {
         try std.io.getStdOut().writeAll(usage);
-        os.exit(0);
+        posix.exit(0);
     }
     if (result.args.len != 0) fatalPrintUsage("unknown option '{s}'", .{result.args[0]});
 
     if (result.flags.version) {
         try std.io.getStdOut().writeAll(@import("build_options").version ++ "\n");
-        os.exit(0);
+        posix.exit(0);
     }
     if (result.flags.@"view-padding") |raw| {
         view_padding = fmt.parseUnsigned(u31, raw, 10) catch
@@ -352,7 +352,7 @@ pub fn main() !void {
 
     const display = wl.Display.connect(null) catch {
         std.debug.print("Unable to connect to Wayland server.\n", .{});
-        os.exit(1);
+        posix.exit(1);
     };
     defer display.disconnect();
 
@@ -405,13 +405,13 @@ fn registryListener(registry: *wl.Registry, event: wl.Registry.Event, context: *
 
 fn fatal(comptime format: []const u8, args: anytype) noreturn {
     std.log.err(format, args);
-    os.exit(1);
+    posix.exit(1);
 }
 
 fn fatalPrintUsage(comptime format: []const u8, args: anytype) noreturn {
     std.log.err(format, args);
     std.io.getStdErr().writeAll(usage) catch {};
-    os.exit(1);
+    posix.exit(1);
 }
 
 fn saturatingCast(comptime T: type, x: anytype) T {