$ sudo nixos-install --flake '.#miku-nixos'  --impure
building the flake in git+file:///mnt/etc/nixos?ref=master&rev=263740a4b91eb9f34f03e560ca9af61096f9f261...
error: --- TypeError --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- nix
at: (310:15) in file: /mnt/nix/store/iv5kvpbswff5m4kfsh0x7vaj1g18axls-source/lib/attrsets.nix

   309|     let
   310|       path' = builtins.storePath path;
      |               ^
   311|       res =

cannot coerce a list to a string
(use '--show-trace' to show detailed location information)