Might be useful to start out smaller

flake.nix

@@ -10,18 +10,14 @@
     };
   };
   outputs = { self, flake-utils, nixpkgs, uiua }:
-    flake-utils.lib.eachDefaultSystem (system:
-      let pkgs = import nixpkgs { inherit system; };
+    let system = "x86_64-linux";
+  pkgs = nixpkgs.legacyPackages.${system};
   in {
-
     packages = {
       default = uiua.packages.${system}.default;
     };
-
     hydraJobs = {
       inherit (self) packages;
     };
-
-
-      });
+  };
 }