these 2 derivations will be built:
  /nix/store/jg3j5mng2614lmaa1v0fbs27psg342nk-closure-info.drv
  /nix/store/z1pzgvygzr27m71cdi9fjmyajpxgrkpz-check-vars.drv
error: path '/nix/store/1600ms8k2m42jcily97lvpx1s49qndjd-check-vars' is not valid
error: Cannot build '/nix/store/z1pzgvygzr27m71cdi9fjmyajpxgrkpz-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/1600ms8k2m42jcily97lvpx1s49qndjd-check-vars