these 2 derivations will be built:
  /nix/store/vqrfp0p1j13y0y5ks0hh3s0pynam8x0i-closure-info.drv
  /nix/store/dvhi7fr2a1292zxmj6461cfj32jbw90h-check-vars.drv
error: path '/nix/store/3nvndg66ps3k28lssa00741m0yscn6rf-check-vars' is not valid
error: Cannot build '/nix/store/dvhi7fr2a1292zxmj6461cfj32jbw90h-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/3nvndg66ps3k28lssa00741m0yscn6rf-check-vars