these 4 derivations will be built:
  /nix/store/pz2qmvi024hpwvab9y5fcfq8ffdlgx8s-clan-cli-source.drv
  /nix/store/s5vgfdfv45g8r5p208dfbg5bj4c8cqay-clan-cli.drv
  /nix/store/yhg6wc64bvffnvr5aw0yi8aqyc96jfms-closure-info.drv
  /nix/store/lfnp784vgbgrkgww4j2lyldjb58f5zdc-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
error: path '/nix/store/i3lf3mw8qq6x33pn7fixx806d2m56pil-check-vars' is not valid
error: Cannot build '/nix/store/lfnp784vgbgrkgww4j2lyldjb58f5zdc-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/i3lf3mw8qq6x33pn7fixx806d2m56pil-check-vars