these 4 derivations will be built:
  /nix/store/syhlzp0dnl7a81q5zhi8lyld1a5bb0l2-clan-cli-source.drv
  /nix/store/lni2f2p780pb73qp5ad05qbdjb2lh778-clan-cli.drv
  /nix/store/m1pklr2qdnxdhph3mg10l5qmflkb79mh-closure-info.drv
  /nix/store/8cx694k0l680pggpndsjk4jq0w4kqwnk-check-vars.drv
error: path '/nix/store/1mpbdl6ydj4dl0nqy3n4aspalr6vzpyd-check-vars' is not valid
error: Cannot build '/nix/store/8cx694k0l680pggpndsjk4jq0w4kqwnk-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/1mpbdl6ydj4dl0nqy3n4aspalr6vzpyd-check-vars