New comment by dkwo on void-packages repository

https://github.com/void-linux/void-packages/pull/34030#issuecomment-968048978

Comment:
It seems `giac` is not picked up, could you add it also to `depends`?
```
 RuntimeError: unable to start giac because the command 'giac --sage' failed: The command was not found or was not executable: giac.

    In order to use the Giac interface you need to have Giac installed
    and have a program called "giac" in your PATH. You need a giac version
    supporting "giac --sage" ( roughly after 0.9.1 of march 2011). Some giac
    instructions  and the help's langage depend of you LANG variable. To obtain
    inline help for  giac commands, you also need to have the program "cas_help"
    in your PATH.
```