these 2 derivations will be built:
  /nix/store/a3xc20snaz2yz7jwbimmnbgpskngayzn-flake-inputs.drv
  /nix/store/0vflz213b7h1w0zlpsk454fkrw41hk1f-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy