fix(mac): tolerate a missing self.dirtyRev when the flake is a path input

Same dirtyRev fallback as the KDE flake, for the macOS flake. Verified by evaluation only (darwin outputs cannot be built on Linux).

komorebi-for-mac/flake.nix

@@ -42,7 +42,7 @@
           commonArgs = {
             inherit src version;
             strictDeps = true;
-            COMMIT_HASH = self.rev or (pkgs.lib.removeSuffix "-dirty" self.dirtyRev);
+            COMMIT_HASH = self.rev or (pkgs.lib.removeSuffix "-dirty" (self.dirtyRev or "unknown"));
             nativeBuildInputs = [
               pkgs.darwin.cctools
             ];