these 2 derivations will be built:
  /nix/store/1s0qj29skx8l60ppcirjglkalqsj3jyi-closure-info.drv
  /nix/store/zgws0zywxpbfy2ari8xrjkvwdpaw6kff-check-vars.drv
error: path '/nix/store/8rdzgr3hl7vc1m8zg0zhcg23h8yc8rxh-check-vars' is not valid
error: Cannot build '/nix/store/zgws0zywxpbfy2ari8xrjkvwdpaw6kff-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/8rdzgr3hl7vc1m8zg0zhcg23h8yc8rxh-check-vars