these 2 derivations will be built:
  /nix/store/79bg96i4xbh3h94b899wmy9bwqjadgx3-closure-info.drv
  /nix/store/hplya7qf5jawkaz1l91rp3jvnm5x7qpc-check-vars.drv
error: path '/nix/store/2q2knrvwlh20jqms87vrgsbj55c199mi-check-vars' is not valid
error: Cannot build '/nix/store/hplya7qf5jawkaz1l91rp3jvnm5x7qpc-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/2q2knrvwlh20jqms87vrgsbj55c199mi-check-vars