add current state I use of

https://github.com/nix-community/nixos-apple-silicon

zeta/apple-silicon-support/packages/mesa-asahi-edge/default.nix

@@ -0,0 +1,48 @@
+{ lib
+, fetchFromGitLab
+, mesa
+}:
+
+(mesa.override {
+  galliumDrivers = [ "softpipe" "llvmpipe" "asahi" ];
+  vulkanDrivers = [ "swrast" "asahi" ];
+}).overrideAttrs (oldAttrs: {
+  version = "25.1.0-asahi";
+  src = fetchFromGitLab {
+    # tracking: https://pagure.io/fedora-asahi/mesa/commits/asahi
+    domain = "gitlab.freedesktop.org";
+    owner = "asahi";
+    repo = "mesa";
+    tag = "asahi-20250425";
+    hash = "sha256-3c3uewzKv5wL9BRwaVL4E3FnyA04veQwAPxfHiL7wII=";
+  };
+
+  mesonFlags =
+    let
+      badFlags = [
+        "-Dinstall-mesa-clc"
+        "-Dgallium-nine"
+        "-Dtools"
+      ];
+      isBadFlagList = f: builtins.map (b: lib.hasPrefix b f) badFlags;
+      isGoodFlag = f: !(builtins.foldl' (x: y: x || y) false (isBadFlagList f));
+    in
+    (builtins.filter isGoodFlag oldAttrs.mesonFlags) ++ [
+      # we do not build any graphics drivers these features can be enabled for
+      "-Dgallium-va=disabled"
+      "-Dgallium-vdpau=disabled"
+      "-Dgallium-xa=disabled"
+      "-Dtools=asahi"
+    ];
+
+  # replace patches with ones tweaked slightly to apply to this version
+  patches = [
+    ./opencl.patch
+  ];
+
+  postInstall = (oldAttrs.postInstall or "") + ''
+    # we don't build anything to go in this output but it needs to exist
+    touch $spirv2dxil
+    touch $cross_tools
+  '';
+})

zeta/apple-silicon-support/packages/mesa-asahi-edge/opencl.patch

@@ -0,0 +1,54 @@
+diff --git a/meson.build b/meson.build
+index 07991a6..4c875b9 100644
+--- a/meson.build
++++ b/meson.build
+@@ -1900,7 +1900,7 @@ endif
+
+ dep_clang = null_dep
+ if with_clc or with_gallium_clover
+-  llvm_libdir = dep_llvm.get_variable(cmake : 'LLVM_LIBRARY_DIR', configtool: 'libdir')
++  llvm_libdir = get_option('clang-libdir')
+
+   dep_clang = cpp.find_library('clang-cpp', dirs : llvm_libdir, required : false)
+
+diff --git a/meson.options b/meson.options
+index 84e0f20..38ea92c 100644
+--- a/meson.options
++++ b/meson.options
+@@ -795,3 +795,10 @@ option(
+   value : false,
+   description : 'Install the drivers internal shader compilers (if needed for cross builds).'
+ )
++
++option(
++  'clang-libdir',
++  type : 'string',
++  value : '',
++  description : 'Locations to search for clang libraries.'
++)
+diff --git a/src/gallium/targets/opencl/meson.build b/src/gallium/targets/opencl/meson.build
+index ab2c835..a59e88e 100644
+--- a/src/gallium/targets/opencl/meson.build
++++ b/src/gallium/targets/opencl/meson.build
+@@ -56,7 +56,7 @@ if with_opencl_icd
+     configuration : _config,
+     input : 'mesa.icd.in',
+     output : 'mesa.icd',
+-    install : true,
++    install : false,
+     install_tag : 'runtime',
+     install_dir : join_paths(get_option('sysconfdir'), 'OpenCL', 'vendors'),
+   )
+diff --git a/src/gallium/targets/rusticl/meson.build b/src/gallium/targets/rusticl/meson.build
+index 2b214ad..7f91939 100644
+--- a/src/gallium/targets/rusticl/meson.build
++++ b/src/gallium/targets/rusticl/meson.build
+@@ -64,7 +64,7 @@ configure_file(
+   configuration : _config,
+   input : 'rusticl.icd.in',
+   output : 'rusticl.icd',
+-  install : true,
++  install : false,
+   install_tag : 'runtime',
+   install_dir : join_paths(get_option('sysconfdir'), 'OpenCL', 'vendors'),
+ )