these 5 derivations will be built:
  /nix/store/f2fjxvsawd9pqa0j05hv2xpyknyczhx9-clan-runtime.drv
  /nix/store/a0h84b23s8k3rb4dybbyvl81fmskcfss-clan-cli-source.drv
  /nix/store/81gxwzqs4n1dr3m1584g67mzk0gb3k15-clan-cli.drv
  /nix/store/mjv5d2x4r6lszkjg2xkwzf0cs02x5xf5-closure-info.drv
  /nix/store/fv8g1l87qzysydpl9bwwwaqccz8cgjk0-check-vars.drv
error: path '/nix/store/v3ygs1kw9rmycrb5iy0xi7pl250d1dhq-check-vars' is not valid
error: Cannot build '/nix/store/fv8g1l87qzysydpl9bwwwaqccz8cgjk0-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/v3ygs1kw9rmycrb5iy0xi7pl250d1dhq-check-vars