i hate this thing

flake.nix

@@ -0,0 +1,58 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        llvmPkgs = pkgs.llvmPackages_19;
+      in
+      {
+        devShells.default = pkgs.mkShell {
+          name = "mesa-crocus-opencl";
+
+          packages = with pkgs; [
+            # build tools
+            meson
+            ninja
+            pkg-config
+            cmake
+            python3
+            python3Packages.packaging
+
+            # LLVM stack
+            llvmPkgs.llvm.dev
+            llvmPkgs.clang
+            llvmPkgs.libclc
+
+            # Rust
+            rust-bindgen
+            rustc
+            cargo
+
+            # Mesa deps
+            libdrm
+            expat
+            zlib
+            zstd
+            glslang
+            libffi
+            elfutils
+          ];
+
+          shellHook = ''
+            export PKG_CONFIG_PATH=${pkgs.llvmPackages_19.libclc}/share/pkgconfig:$PKG_CONFIG_PATH
+          '';
+        };
+      }
+    );
+}