these 2 derivations will be built:
  /nix/store/g7zm3r1fh66pvbwnkl2510mrhvgczr48-closure-info.drv
  /nix/store/nrry7gz15bjp8hgxc9jy6azcv6yd08ll-check-vars.drv
error: path '/nix/store/nvzxw9g59b24czcyjmkhirqz9yjrhfs4-check-vars' is not valid
error: Cannot build '/nix/store/nrry7gz15bjp8hgxc9jy6azcv6yd08ll-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/nvzxw9g59b24czcyjmkhirqz9yjrhfs4-check-vars