nix: show commit in hyprctl

flake.nix

@@ -79,6 +79,7 @@
         stdenv = prev.gcc12Stdenv;
         version = props.version + "+date=" + (mkDate (self.lastModifiedDate or "19700101")) + "_" + (self.shortRev or "dirty");
         wlroots = wlroots-hyprland;
+        commit = self.rev or "";
         inherit (inputs.hyprland-protocols.packages.${prev.stdenv.hostPlatform.system}) hyprland-protocols;
         inherit udis86;
       };

nix/default.nix

@@ -32,6 +32,7 @@
   nvidiaPatches ? false,
   withSystemd ? true,
   version ? "git",
+  commit,
 }: let
   assertXWayland = lib.assertMsg (hidpiXWayland -> enableXWayland) ''
     Hyprland: cannot have hidpiXWayland when enableXWayland is false.
@@ -102,6 +103,9 @@ in
       postPatch = ''
         # Fix hardcoded paths to /usr installation
         sed -i "s#/usr#$out#" src/render/OpenGL.cpp
+        substituteInPlace meson.build \
+          --replace "@GIT_COMMIT_HASH@" '${commit}' \
+          --replace "@GIT_DIRTY@" '${if commit == "" then "dirty" else ""}'
       '';
 
       passthru.providedSessions = ["hyprland"];

nix/meson-build.patch

@@ -2,6 +2,18 @@ diff --git a/meson.build b/meson.build
 index f380255..abd7cd3 100644
 --- a/meson.build
 +++ b/meson.build
+@@ -21,9 +21,9 @@ else
+ endif
+ 
+ GIT_BRANCH = run_command('git', 'rev-parse', '--abbrev-ref', 'HEAD', check: false).stdout().strip()
+-GIT_COMMIT_HASH = run_command('git', 'rev-parse', 'HEAD', check: false).stdout().strip()
++GIT_COMMIT_HASH = '@GIT_COMMIT_HASH@'
+ GIT_COMMIT_MESSAGE = run_command('sh', '-c', 'git show | head -n 5 | tail -n 1', check: false).stdout().strip()
+-GIT_DIRTY = run_command('sh', '-c', 'git diff-index --quiet HEAD -- || echo "dirty"', check: false).stdout().strip()
++GIT_DIRTY = '@GIT_DIRTY@'
+ 
+ add_project_arguments(
+   [
 @@ -39,23 +39,8 @@ add_project_arguments(
    ],
    language: 'cpp')