these 2 derivations will be built:
  /nix/store/iymgivkcgvd4801y2rcjskxkm48kb83p-test-stack-land.drv
  /nix/store/bhvlw39ha7wfshgdm4hfffbvb12flpnn-stack-land-integration.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy