these 2 derivations will be built:
  /nix/store/d4vdbq00bidybd9dd6cvg0cgyyj3lp3h-closure-info.drv
  /nix/store/4nvrgspz0gdpw8s5cwr9maaaliv5q0ml-check-vars.drv
error: path '/nix/store/ls927g3yhvm4hny3ah05d3854bsk6lzy-check-vars' is not valid
error: Cannot build '/nix/store/4nvrgspz0gdpw8s5cwr9maaaliv5q0ml-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/ls927g3yhvm4hny3ah05d3854bsk6lzy-check-vars