these 5 derivations will be built:
  /nix/store/svcn599g9vlacwz1sa9592fkqbwmcvhw-clan-runtime.drv
  /nix/store/czx19f4r4889jnwxxhpgpb97jcyhdx1x-clan-cli-source.drv
  /nix/store/mxbz6qq7zyarwqn3kk6wykpr52jhc448-clan-cli.drv
  /nix/store/rl6iz7si9gkwv636z24dy80g9h3j83ca-closure-info.drv
  /nix/store/zdja7wmv84nsda5cx0y40rsmc7r9rzw5-check-vars.drv
error: path '/nix/store/ngc5sj51v33z9gmfypp6ciwy4n6f7gli-check-vars' is not valid
error: Cannot build '/nix/store/zdja7wmv84nsda5cx0y40rsmc7r9rzw5-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/ngc5sj51v33z9gmfypp6ciwy4n6f7gli-check-vars