these 2 derivations will be built:
  /nix/store/ymbmzyy8g5v7ky3qxa2bk6hfd1vz0x6j-closure-info.drv
  /nix/store/vc6mmjwsrhnf60wnmhsvpwcyg9v0fkx9-check-vars.drv
error: path '/nix/store/wipqihp6ah4ns11dw2fyijil1r5apa4c-check-vars' is not valid
error: Cannot build '/nix/store/vc6mmjwsrhnf60wnmhsvpwcyg9v0fkx9-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/wipqihp6ah4ns11dw2fyijil1r5apa4c-check-vars