feat: add xwayland-satellite

Niri doesn't come with xwayland support, so we provide
xwayland-satellite to have native-like X windows in wayland

Change-Id: I6c1d417e433abda269cfb08b210c55ae688af2b0
diff --git a/flake.lock b/flake.lock
index 25b5442..be1ca4d 100644
--- a/flake.lock
+++ b/flake.lock
@@ -676,6 +676,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-xwayland-23": {
+      "locked": {
+        "lastModified": 1716361217,
+        "narHash": "sha256-mzZDr00WUiUXVm1ujBVv6A0qRd8okaITyUp4ezYRgc4=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "46397778ef1f73414b03ed553a3368f0e7e33c2f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "46397778ef1f73414b03ed553a3368f0e7e33c2f",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1700612854,
@@ -802,10 +818,12 @@
         "nix-index-database": "nix-index-database",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs_4",
+        "nixpkgs-xwayland-23": "nixpkgs-xwayland-23",
         "nur": "nur",
         "snowfall-lib": "snowfall-lib",
         "sops-nix": "sops-nix",
-        "templates": "templates"
+        "templates": "templates",
+        "xwayland-satellite": "xwayland-satellite"
       }
     },
     "snowfall-lib": {
@@ -954,6 +972,22 @@
         "type": "git",
         "url": "https://git.clicks.codes/Templates"
       }
+    },
+    "xwayland-satellite": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1716523768,
+        "narHash": "sha256-zdQwzUzaTx/+OIo6hHbi2GwhGFAbsogqWVKfy2H3Mro=",
+        "owner": "Supreeeme",
+        "repo": "xwayland-satellite",
+        "rev": "02bee5aea7d4e95abad5c6792f6caab1190a1e68",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Supreeeme",
+        "repo": "xwayland-satellite",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 5df0a55..ccc2bcc 100644
--- a/flake.nix
+++ b/flake.nix
@@ -58,6 +58,7 @@
     nixos-hardware.url = "github:nixos/nixos-hardware/master";
 
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    nixpkgs-xwayland-23.url = "github:nixos/nixpkgs?rev=46397778ef1f73414b03ed553a3368f0e7e33c2f";
 
     nur.url = "github:nix-community/nur";
 
@@ -71,6 +72,11 @@
     templates.url = "git+https://git.clicks.codes/Templates";
 
     emacs-overlay.url = "github:nix-community/emacs-overlay";
+
+    xwayland-satellite = {
+      url = "github:Supreeeme/xwayland-satellite";
+      flake = false;
+    };
   };
 
   outputs =
diff --git a/homes/x86_64-linux/minion@greylag/default.nix b/homes/x86_64-linux/minion@greylag/default.nix
index 52a91e6..c46ca09 100644
--- a/homes/x86_64-linux/minion@greylag/default.nix
+++ b/homes/x86_64-linux/minion@greylag/default.nix
@@ -22,6 +22,7 @@
   chimera.minion.enable = true;
   home.packages = [
     pkgs.wl-clipboard
+    pkgs.chimera.xwayland-satellite
   ];
 
   chimera.waybar = {
diff --git a/packages/xwayland-satellite/default.nix b/packages/xwayland-satellite/default.nix
new file mode 100644
index 0000000..5bfa4fa
--- /dev/null
+++ b/packages/xwayland-satellite/default.nix
@@ -0,0 +1,48 @@
+{ inputs, system, lib, pkg-config, rustPlatform, libclang, xcb-util-cursor, xorg, musl, makeWrapper }: let
+  src = inputs.xwayland-satellite;
+  libraries = [
+    xcb-util-cursor
+    xorg.libxcb
+    musl
+  ];
+  includeArgs = map (library: ''-I"${library.dev}/include"'') libraries;
+  libraryArgs = map (library: ''-L"${library}/lib"'') libraries;
+  extraClangArgs = builtins.concatStringsSep " " (includeArgs ++ libraryArgs);
+  xwayland = inputs.nixpkgs-xwayland-23.legacyPackages.${system}.xwayland; # needed to avoid steam big picture mode failing, see https://github.com/Supreeeme/xwayland-satellite/issues/18
+in rustPlatform.buildRustPackage {
+  pname = "xwayland-satellite";
+  version = "unstable-${src.lastModifiedDate}";
+
+  inherit src;
+
+  cargoLock.lockFile = "${src}/Cargo.lock";
+
+  preBuild = ''
+    export LIBCLANG_PATH="${libclang.lib}/lib"
+    export BINDGEN_EXTRA_CLANG_ARGS='${extraClangArgs}'
+    export LIBRARY_PATH="${lib.makeLibraryPath libraries}"
+  '';
+
+  doCheck = false; # xwayland-satellite fails checks due to not being wrapped at this point...
+
+  nativeBuildInputs = libraries ++ [
+    libclang.lib
+    pkg-config
+    makeWrapper
+  ];
+
+  postInstall = ''
+    wrapProgram $out/bin/xwayland-satellite --suffix PATH : ${lib.makeBinPath [ xwayland ]}
+  '';
+
+  buildInputs = [
+    xwayland
+  ];
+
+  meta = {
+    description = "Allow rootless xwayland integration for wayland compositors";
+    homepage = "https://github.com/Supreeeme/xwayland-satellite";
+    license = lib.licenses.mpl20;
+    maintainers = [ lib.maintainers.minion3665 ];
+  };
+}