add lua builder

1 files changed, 58 insertions, 0 deletions

diff --git a/nix/lua.nix b/nix/lua.nix
new file mode 100644
index 0000000..36ab4e5
--- /dev/null
+++ b/nix/lua.nix
@@ -0,0 +1,58 @@
+defaults: {
+  pkgs ? defaults.pkgs,
+  astal ? defaults.astal,
+  name ? "astal-lua",
+  src,
+  extraLuaPackages ? (ps: []),
+  extraPacakges ? [],
+}: let
+  lua = pkgs.lua.withPackages (ps:
+    (extraLuaPackages ps)
+    ++ [
+      ps.lgi
+      (ps.luaPackages.toLuaModule (pkgs.stdenv.mkDerivation {
+        name = "astal";
+        version = "0.1.0";
+        src = "${astal}/core/lua";
+        dontBuild = true;
+        installPhase = ''
+          mkdir -p $out/share/lua/${ps.lua.luaversion}/astal
+          cp -r astal/* $out/share/lua/${ps.lua.luaversion}/astal
+        '';
+      }))
+    ]);
+
+  nativeBuildInputs = with pkgs; [
+    wrapGAppsHook
+    gobject-introspection
+  ];
+
+  buildInputs =
+    extraPacakges
+    ++ [
+      lua
+      astal.packages.${pkgs.system}.default
+    ];
+
+  script = pkgs.writeScript "astal-lua" ''
+    #!${lua}/bin/lua
+    package.path = package.path .. ";${src}/?.lua"
+    require "app"
+  '';
+in
+  pkgs.stdenv.mkDerivation {
+    inherit nativeBuildInputs buildInputs src name;
+
+    installPhase = ''
+      mkdir -p $out/bin
+      cp -r * $out/bin
+      cp ${script} $out/bin/${name}
+      chmod +x $out/bin/${name}
+    '';
+
+    preFixup = ''
+      gappsWrapperArgs+=(
+        --prefix PATH : ${pkgs.lib.makeBinPath extraPacakges}
+      )
+    '';
+  }