these 2 derivations will be built:
  /nix/store/8vs6grjl5hs96i0dj4wssvd7mf7g6431-closure-info.drv
  /nix/store/vs7yl5lyq7nv3ypymddbnjc27f0g4i1w-check-vars.drv
error: path '/nix/store/zi4xf5p65i5snsr7sy18c21cdppmiqf4-check-vars' is not valid
error: Cannot build '/nix/store/vs7yl5lyq7nv3ypymddbnjc27f0g4i1w-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/zi4xf5p65i5snsr7sy18c21cdppmiqf4-check-vars