clan-vm-manager: support basic devshell on macOS

pkgs/clan-vm-manager/default.nix

@@ -19,6 +19,8 @@
   setuptools,
   webkitgtk_6_0,
   wrapGAppsHook,
+  lib,
+  stdenv,
 }:
 let
   source = ./.;
@@ -32,14 +34,18 @@ let
   };
 
   # Dependencies that are directly used in the project but nor from internal python packages
-  externalPythonDeps = [
+  externalPythonDeps =
+    [
       pygobject3
       pygobject-stubs
       gtk4
       libadwaita
-    webkitgtk_6_0
       adwaita-icon-theme
-  ] ++ clan-cli.propagatedBuildInputs;
+    ]
+    ++ clan-cli.propagatedBuildInputs
+    ++ lib.optionals (!stdenv.isDarwin) [
+      webkitgtk_6_0
+    ];
 
   # Deps including python packages from the local project
   allPythonDeps = [ (python3.pkgs.toPythonModule clan-cli) ] ++ externalPythonDeps;

pkgs/clan-vm-manager/flake-module.nix

@@ -8,13 +8,12 @@
       system,
       ...
     }:
-    if lib.elem system lib.platforms.darwin then
-      { }
-    else
     {
       devShells.clan-vm-manager = pkgs.callPackage ./shell.nix {
         inherit (config.packages) clan-vm-manager;
       };
+    }
+    // lib.optionalAttrs (system != lib.platforms.darwin) {
       packages.clan-vm-manager = pkgs.python3.pkgs.callPackage ./default.nix {
         inherit (config.packages) clan-cli;
       };