these 5 derivations will be built:
  /nix/store/4a5bhwby8yn2458hk5a6vgnh3vywxv8m-closure-info.drv
  /nix/store/pvnz59lnw6xghj967iwqjvc78f5nq1cs-clan-runtime.drv
  /nix/store/f642prp3kr6cn7ni81rc18phf6bsqkh0-clan-cli-source.drv
  /nix/store/v59610jcnx4ki31m9bifjp5w6w9f4kcj-clan-cli.drv
  /nix/store/dd4zwbx73m3bd7hcibc1dkw5fxp0yvd6-check-vars.drv
error: path '/nix/store/9516lrkwc53hxjr29hhj47qsw0kh8dkr-check-vars' is not valid
error: Cannot build '/nix/store/dd4zwbx73m3bd7hcibc1dkw5fxp0yvd6-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/9516lrkwc53hxjr29hhj47qsw0kh8dkr-check-vars