nix: add package for wl-cross-domain-proxy

flake.nix

@@ -128,6 +128,8 @@
             };
 
             sidebus-agent = sidebus.packages.${system}.sidebus-agent;
+
+            wl-cross-domain-proxy = pkgs.callPackage ./packages/wl-cross-domain-proxy { };
           };
 
           devShells.default = pkgs.callPackage ./devShells {

packages/wl-cross-domain-proxy/default.nix

@@ -0,0 +1,44 @@
+{
+  lib,
+  rustPlatform,
+  # fetchpatch,
+  fetchFromGitea,
+  pkg-config,
+  libdrm,
+}:
+
+# TODO: upstream
+rustPlatform.buildRustPackage {
+  pname = "wl-cross-domain-proxy";
+  version = "0-unstable-2026-01-30";
+
+  src = fetchFromGitea {
+    domain = "codeberg.org";
+    owner = "drakulix";
+    repo = "wl-cross-domain-proxy";
+    rev = "c6ce1ca89fb4d6f4f18d3aaf88324d40d4589177";
+    hash = "sha256-ydyT4DFzWzhzOZR591UOgLjVQt/v6hRSNjzM3QtohlU=";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ libdrm ];
+
+  cargoHash = "sha256-k3dmxIuCQoOrn/VwauTdzuRw/XKQB6LPLgO5ql0rE7E=";
+  cargoPatches = [
+    # (fetchpatch {
+    #   name = "XXX.patch";
+    #   url = "https://codeberg.org/drakulix/wl-cross-domain-proxy/pulls/XXX.patch";
+    #   hash = lib.fakeHash;
+    # })
+  ];
+
+  meta = {
+    homepage = "https://codeberg.org/drakulix/wl-cross-domain-proxy";
+    description = "Proxy for the wayland protocol across virtio-gpu cross-domain context";
+    mainProgram = "wl-cross-domain-proxy";
+    platforms = lib.platforms.linux;
+    license = [ lib.licenses.mit ];
+    maintainers = [ lib.maintainers.valpackett ];
+  };
+}