hyprland: fix eval failure on darwin

Darwin is not a supported platform, but the `meta.platform` check never
kicks in. That's because there is a `throw` in `useMoldLinker`
triggering for darwin. This, among many others, causes CI to require
hacky workarounds for evaluation.

By not adding this for darwin, eval up to `meta.platforms` will succeed
and the package then be filtered out correctly.

pkgs/by-name/hy/hyprland/package.nix

@@ -73,7 +73,9 @@ let
 
   # possibility to add more adapters in the future, such as keepDebugInfo,
   # which would be controlled by the `debug` flag
-  adapters = [
+  # Condition on darwin to avoid breaking eval for darwin in CI,
+  # even though darwin is not supported anyway.
+  adapters = lib.optionals (!stdenv.targetPlatform.isDarwin) [
     stdenvAdapters.useMoldLinker
   ];