these 3 derivations will be built:
  /nix/store/h54sa04s4djb6iwa0cadlhv7p22awhbj-clan-cli-source.drv
  /nix/store/5q7j0d9iq02asg7d3drx6md1vq5xbxyk-clan-cli.drv
  /nix/store/afpb87dyqgw0hbq052h3fq9b3vb145b7-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy