these 2 derivations will be built:
  /nix/store/xaj026r36aa44h1dnnvc098i3zk2j9rr-closure-info.drv
  /nix/store/zaxgqbmch3d63axal1zp5h4cnzd6zpg6-check-vars.drv
error: path '/nix/store/bbb48bc8xp66217cycgbissfb69i5yhs-check-vars' is not valid
error: Cannot build '/nix/store/zaxgqbmch3d63axal1zp5h4cnzd6zpg6-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/bbb48bc8xp66217cycgbissfb69i5yhs-check-vars