these 2 derivations will be built:
  /nix/store/157f7wsxpvmr45kwgi3787lzds7mv61k-flake-inputs.drv
  /nix/store/97vmdkn1pli7afvki3w51bxsg5ifp02b-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy