these 2 derivations will be built:
  /nix/store/zlb6jparkgl3167xx9nf2gisimgmpd10-closure-info.drv
  /nix/store/c65jccw6rmryrwxidgp30nw36xjzzns7-check-vars.drv
error: path '/nix/store/n4vcvn8xvzsasi95gi7lvdy8l160l7k7-check-vars' is not valid
error: Cannot build '/nix/store/c65jccw6rmryrwxidgp30nw36xjzzns7-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/n4vcvn8xvzsasi95gi7lvdy8l160l7k7-check-vars