these 2 derivations will be built:
  /nix/store/yql30zmp1xmgj95wfd8dp8094rr11hzk-closure-info.drv
  /nix/store/i616qgb2f9q45kivkq3cywymga0s1729-check-vars.drv
error: path '/nix/store/nkn11wd7daw2df3rrms5f1sdd9s58kaw-check-vars' is not valid
error: Cannot build '/nix/store/i616qgb2f9q45kivkq3cywymga0s1729-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/nkn11wd7daw2df3rrms5f1sdd9s58kaw-check-vars