these 2 derivations will be built:
  /nix/store/cbdsa071yygg1waplqs59y15hdjc5aqj-closure-info.drv
  /nix/store/3r1mkv1h1v1ld098hfgr8bphrr4siwr9-check-vars.drv
error: path '/nix/store/vmlmiq7cslfw5k1497h2vn6j54w55va8-check-vars' is not valid
error: Cannot build '/nix/store/3r1mkv1h1v1ld098hfgr8bphrr4siwr9-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/vmlmiq7cslfw5k1497h2vn6j54w55va8-check-vars