these 5 derivations will be built:
  /nix/store/navb5zqr1mhcpx3slgw36hh9mfbnjfds-clan-runtime.drv
  /nix/store/jjix6y45prfr4plb1044pd6cbx0fmwfq-clan-cli-source.drv
  /nix/store/6z9adi25yh07w7syyambq9ms1cc6sp3a-clan-cli.drv
  /nix/store/p75j2xnz59w944g1fc3fiysbpqnjlk0s-closure-info.drv
  /nix/store/p93v52pwmn2vsn84xkv6vqqqip4i36sn-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy