these 2 derivations will be built:
  /nix/store/38dvfvmz4lmbgc6jaa759h781s36kpas-flake-inputs.drv
  /nix/store/sjny6qkc6n4ir6izl9alzxd5w6jxvh2g-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy