these 2 derivations will be built:
  /nix/store/pzdllaz3v7wrimp56792jcx3zyk23h61-closure-info.drv
  /nix/store/fpz1hibbyslyzq80wfg9ak2284k44bwn-check-vars.drv
error: path '/nix/store/84wsxvn7v614chrab19y88x6ydipap2x-check-vars' is not valid
error: Cannot build '/nix/store/fpz1hibbyslyzq80wfg9ak2284k44bwn-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/84wsxvn7v614chrab19y88x6ydipap2x-check-vars