this derivation will be built:
  /nix/store/0mm5h2qs2cydq2p5ymg1bfzpgzlxnsa1-iets-fmt-0.1.0.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy