these 5 derivations will be built:
  /nix/store/3ha2xqkbxr12704d7f3s68jzy79a830j-clan-runtime.drv
  /nix/store/ci773ch5vlbkgr8b5pq4wcpzmqla91sg-clan-cli-source.drv
  /nix/store/jyjprr5a9wi5skp5hp2d0jbgmck6fqi2-clan-cli.drv
  /nix/store/xxyf85xcwiabciwis03wjqgy8nd2wi0a-closure-info.drv
  /nix/store/sqwnw2pai9lnbz65hp3jgv4hfl8jmfpw-check-vars.drv
error: path '/nix/store/sbil4vnq0gmvd57h6jakxqw0x35dk56l-check-vars' is not valid
error: Cannot build '/nix/store/sqwnw2pai9lnbz65hp3jgv4hfl8jmfpw-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/sbil4vnq0gmvd57h6jakxqw0x35dk56l-check-vars