these 2 derivations will be built:
  /nix/store/k8mal8xxzl7fr1kpmffsvcrfg4iv4xl3-amp-linux-x64.drv
  /nix/store/5cfiql3mv0dzpx0prhaya9yi6dnj6ncy-amp-0.0.1789934445-g6f6d2f.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy