hm test

flake.nix

@@ -22,7 +22,7 @@
       flake-utils,
       ...
     }@inputs:
-    flake-utils.lib.eachDefaultSystem (
+    (flake-utils.lib.eachDefaultSystem (
       system:
       let
         pkgs = import inputs.nixpkgs {
@@ -105,16 +105,31 @@
             # MY_CUSTOM_VAR = "some value";
           }
         );
+
+        # winit dlopens libwayland and wgpu the vulkan loader at runtime, which
+        # rpath alone does not cover; wrap the binary with LD_LIBRARY_PATH so
+        # the package also runs outside the devShell (e.g. from systemd).
+        barbar = pkgs.symlinkJoin {
+          name = "barbar-${my-crate.version}";
+          paths = [ my-crate ];
+          nativeBuildInputs = [ pkgs.makeWrapper ];
+          postBuild = ''
+            wrapProgram $out/bin/core \
+              --prefix LD_LIBRARY_PATH : ${pkgs.lib.makeLibraryPath guiLibs}
+          '';
+          meta.mainProgram = "core";
+        };
       in
       {
         checks = {
           inherit my-crate;
         };
 
-        packages.default = my-crate;
+        packages.default = barbar;
 
         apps.default = flake-utils.lib.mkApp {
-          drv = my-crate;
+          drv = barbar;
+          exePath = "/bin/core";
         };
 
         devShells.default = craneLib.devShell {
@@ -135,5 +150,9 @@
           packages = guiLibs ++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux [ pkgs.mold ];
         };
       }
-    );
+    ))
+    // {
+      # System-independent, so it lives outside eachDefaultSystem.
+      homeManagerModules.default = import ./nix/home-manager.nix self;
+    };
 }