these 2 derivations will be built:
  /nix/store/gdap3rmf3v17mf95d1fw4jcf59g26274-closure-info.drv
  /nix/store/fswnkasypfi5hfrqwyz8b7iapd1vxawy-check-vars.drv
error: path '/nix/store/hv6q64h1yd8yklvlk1q31bhj6imw87nk-check-vars' is not valid
error: Cannot build '/nix/store/fswnkasypfi5hfrqwyz8b7iapd1vxawy-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/hv6q64h1yd8yklvlk1q31bhj6imw87nk-check-vars