these 2 derivations will be built:
  /nix/store/pdkgsyjvq3sy7xhhrg760392a412l3rr-closure-info.drv
  /nix/store/hm48dgdwnmp8hk68vsz05qgpbk7m1klg-check-vars.drv
error: path '/nix/store/hmlsv0cwkjsw8rc56ygav8qprix33mwv-check-vars' is not valid
error: Cannot build '/nix/store/hm48dgdwnmp8hk68vsz05qgpbk7m1klg-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/hmlsv0cwkjsw8rc56ygav8qprix33mwv-check-vars