these 4 derivations will be built:
  /nix/store/8bk1vf7jiasacqjs3q5rwh4xpl1gnl8d-closure-info.drv
  /nix/store/msiv2xgc20ask836v2b37gq5za0risxc-clan-cli-source.drv
  /nix/store/k2z9lkgm1b1ai26knrq8kwxnyzc2hfak-clan-cli.drv
  /nix/store/3msb4lnx4mf0kgbld3xqzdzbi3j9cgny-check-vars.drv
error: path '/nix/store/3wnx7gh9m2001hy6w2w318piizgixzwl-check-vars' is not valid
error: Cannot build '/nix/store/3msb4lnx4mf0kgbld3xqzdzbi3j9cgny-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/3wnx7gh9m2001hy6w2w318piizgixzwl-check-vars