these 2 derivations will be built:
  /nix/store/063554mja7x8vzrfpczkx9ysgm7clzkc-closure-info.drv
  /nix/store/a8g0fyab1ckigfyv9ag96wl1n5v43vnz-check-vars.drv
error: path '/nix/store/hqhhc6bpw3b96wn0c59dnqxqw3xjdvvi-check-vars' is not valid
error: Cannot build '/nix/store/a8g0fyab1ckigfyv9ag96wl1n5v43vnz-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/hqhhc6bpw3b96wn0c59dnqxqw3xjdvvi-check-vars