wip: dnsc-machine setup

flake.nix

@@ -55,9 +55,26 @@
       nixosModules.steam = import ./modules/steam;
       nixosModules.niriSystem = import ./modules/wm/niri-system;
 
+      # Overlays
+      overlays.default = final: prev: {
+        python3 = prev.python3.override {
+          packageOverrides = pyFinal: pyPrev: {
+            python-dbusmock = pyPrev.python-dbusmock.overridePythonAttrs (_: {
+              doCheck = false;
+            });
+          };
+        };
+      };
+
       nixosConfigurations.dnsc-machine = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         specialArgs = { inherit inputs outputs; };
+        pkgs = import nixpkgs {
+          system = "x86_64-linux";
+          overlays = [
+            self.overlays.default
+          ];
+        };
         modules = [
           ./hosts/dnsc-machine
         ];