these 5 derivations will be built:
  /nix/store/qqxm3if339b5ix2xkqkfhpqsf28h5bxz-clan-runtime.drv
  /nix/store/vmc38nwq1l22gk5jbqhf8s02kq2dw4v4-clan-cli-source.drv
  /nix/store/xr8b3a9lfdg3rjakdv51l9rzbsq191hs-clan-cli.drv
  /nix/store/z1fy521n8hcvng9n9bby12p5p1qkylp4-closure-info.drv
  /nix/store/ys2njdgidbk7wsb6arr62dr4d1ywpa65-check-vars.drv
error: path '/nix/store/kxk005q1531gjd4p92hx58c8x5chvjcy-check-vars' is not valid
error: Cannot build '/nix/store/ys2njdgidbk7wsb6arr62dr4d1ywpa65-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/kxk005q1531gjd4p92hx58c8x5chvjcy-check-vars