these 2 derivations will be built:
  /nix/store/jfny3isssd3v72cg32d5q36i635zm8mn-closure-info.drv
  /nix/store/si52b0bnzaywimsfggcf10rrah6h1iay-check-vars.drv
error: path '/nix/store/hr4ax5cygw7qd42qlc67qw4jx5z04l0n-check-vars' is not valid
error: Cannot build '/nix/store/si52b0bnzaywimsfggcf10rrah6h1iay-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/hr4ax5cygw7qd42qlc67qw4jx5z04l0n-check-vars