these 5 derivations will be built:
  /nix/store/0w3ykk84fhmf53mg4f3rcs1kb0vblgfk-clan-runtime.drv
  /nix/store/562cam7q85r7g9zzw8lbdb8l6fs86ycg-clan-cli-source.drv
  /nix/store/h6r7wckb87b0f9k8rpgzxcjr5898wv1n-closure-info.drv
  /nix/store/z9m6q04c3sq24p5ghwa3k3x2jzlg9pw1-clan-cli.drv
  /nix/store/aiqna8nh7kfqvn1za550bn58qg0vjfw8-check-vars.drv
error: path '/nix/store/czfbjs89lpvxs097q39sps7pxcqv2cai-check-vars' is not valid
error: Cannot build '/nix/store/aiqna8nh7kfqvn1za550bn58qg0vjfw8-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/czfbjs89lpvxs097q39sps7pxcqv2cai-check-vars