these 2 derivations will be built:
  /nix/store/j1mr6xkqnj7dkf4sj8sz3pz7rm8z72ga-closure-info.drv
  /nix/store/k4k0lcdrh458rdx37cgnr99g2ar5yvly-check-vars.drv
error: path '/nix/store/cxiavkqypwr94avvsg89sn0dfynjpkg0-check-vars' is not valid
error: Cannot build '/nix/store/k4k0lcdrh458rdx37cgnr99g2ar5yvly-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/cxiavkqypwr94avvsg89sn0dfynjpkg0-check-vars