build(nix): add package derivation for tshell

flake.nix

@@ -42,9 +42,16 @@
         };
       };
     in
-    {
+    rec {
       formatter.${system} = treefmtEval.config.build.wrapper;
 
+      packages.${system} = {
+        tshell = pkgs.callPackage ./package.nix {
+          inherit quickshellWithModules;
+        };
+        default = packages.${system}.tshell;
+      };
+
       devShells.${system}.default = pkgs.mkShell {
         packages = [
           quickshellWithModules

package.nix

@@ -0,0 +1,68 @@
+{
+  lib,
+  stdenv,
+  makeWrapper,
+  makeFontsConf,
+  quickshellWithModules,
+  cava,
+  wallust,
+  nerd-fonts,
+  extraRuntimeDeps ? [ ],
+}:
+let
+  version = "0.1.0";
+
+  runtimeDeps = [
+    cava
+    wallust
+  ]
+  ++ extraRuntimeDeps;
+
+  fontconfig = makeFontsConf {
+    fontDirectories = [ nerd-fonts.fira-code ];
+  };
+in
+stdenv.mkDerivation {
+  inherit version;
+  pname = "tshell";
+  src = lib.fileset.toSource {
+    root = ./.;
+    fileset = lib.fileset.unions [
+      ./shell.qml
+      ./assets
+      ./config
+      ./modules
+      ./services
+      ./ui
+      ./windows
+    ];
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ quickshellWithModules ];
+  propagatedBuildInputs = runtimeDeps;
+
+  dontBuild = true;
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin $out/share/tshell
+    cp -r . $out/share/tshell
+
+    makeWrapper ${quickshellWithModules}/bin/qs $out/bin/tshell \
+      --prefix PATH : "${lib.makeBinPath runtimeDeps}" \
+      --set FONTCONFIG_FILE "${fontconfig}" \
+      --add-flags "-p $out/share/tshell"
+
+    runHook postInstall
+  '';
+
+  meta = {
+    description = "tux's widgets for wayland";
+    homepage = "https://github.com/tuxdotrs/tshell";
+    license = lib.licenses.gpl3Only;
+    mainProgram = "tshell";
+    platforms = lib.platforms.linux;
+  };
+}