these 5 derivations will be built:
  /nix/store/lsydcmxkvy6gz9a7pa6ygyzra4dj3c8v-clan-runtime.drv
  /nix/store/hnqpwkvc3jlcqnx2c7hylgvb41ygfapc-clan-cli-source.drv
  /nix/store/9p303nw7ac83jlb7sppjwlh91c2qhl0i-clan-cli.drv
  /nix/store/smjvz31llwndz5dv47p8faspq889pfks-closure-info.drv
  /nix/store/7hy54q0q5vxkbfslypypfq8sp6z8i1i2-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy