these 2 derivations will be built:
  /nix/store/zz48ssacgm1c9cizw4b02j8kc1047d7r-closure-info.drv
  /nix/store/yxdd7ny8gpj1kj7days38y01j1c90g4m-check-vars.drv
error: path '/nix/store/kgv8xq090qhfg6hrksqa6jaaiq2i4i2g-check-vars' is not valid
error: Cannot build '/nix/store/yxdd7ny8gpj1kj7days38y01j1c90g4m-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/kgv8xq090qhfg6hrksqa6jaaiq2i4i2g-check-vars