unpacking 'https://github.com/NixOS/nixpkgs/archive/2c423e03bbafcff28bfadc6781a4a8257f205cb5.tar.gz' into the Git cache...
error:
       … while calling the 'import' builtin
         at /nix/store/6ajjg20iffg1b4jb52z72flkxavv2nvl-source/flake.nix:46:9:
           45|       rustcPkgsForRev = rev:
           46|         import (builtins.fetchTarball
             |         ^
           47|           "https://github.com/NixOS/nixpkgs/archive/${rev}.tar.gz")

       … while realising the context of a path

       … while calling the 'fetchTarball' builtin
         at /nix/store/6ajjg20iffg1b4jb52z72flkxavv2nvl-source/flake.nix:46:17:
           45|       rustcPkgsForRev = rev:
           46|         import (builtins.fetchTarball
             |                 ^
           47|           "https://github.com/NixOS/nixpkgs/archive/${rev}.tar.gz")

       error: creating file '"/nix/store/tmp-604008-4178376721/x/pkgs/by-name/ku/kuro/package.nix"': No space left on device