these 2 derivations will be built:
  /nix/store/36nwgkp83izn66nh5h25i87jxajp0i8n-closure-info.drv
  /nix/store/hrxnghn8wkm4m7knpjzrg7vacgxazpvl-check-vars.drv
building '/nix/store/36nwgkp83izn66nh5h25i87jxajp0i8n-closure-info.drv'
closure-info> structuredAttrs is enabled