Misc fixes

flake.nix

@@ -118,7 +118,7 @@
               repl = {
                 type = "app";
                 program = "${pkgs.writeShellScript "vivarium-repl" ''
-              ${pkgs.nix}/bin/nix repl --expr 'let flake = builtins.getFlake "${self}"; in flake // flake.nixosConfigurations // rec { pkgs = flake.inputs.nixpkgs.legacyPackages.${system}; lib = pkgs.lib; }'
+              ${pkgs.nix}/bin/nix repl --expr 'let flake = builtins.getFlake "${self}"; in flake // flake.nixosConfigurations // rec { pkgs = import ${nixpkgs} {}; lib = pkgs.lib; }'
             ''}";
               };
             };

hm/rebuild/update-local-flakes.py

@@ -47,8 +47,7 @@ def process_flake(flake: str) -> None:
             "--extra-experimental-features",
             "flakes",
             "flake",
-            "lock",
-            "--update-input",
+            "update",
             dep_name,
         ]
         p = subprocess.run(cmd, cwd=dir)