`system_dependencies`
---------------------
System dependencies to install with `yum` prior to building.
Entries are expected to be in `yum` `name-version` format.
If dnf is avaiable I think it is better to use dnf over yum.
So your intention is to install deps so that a package can to source compiler and linked?
That will only work for root.
You might want to output the yum/dnf command and ask the user to run that command
then retry the install.
Also not that you will need to know for each distro where to find the deps.
I do not think you can rely of package names across distros.
`environment_variables`
-----------------------
Environment variables to set prior to building.
`python_dependencies`
---------------------
Python libraries to install with `pip` prior to building.
Will be installed for each version of python available in
`/opt/python/`.
At least with Centos 8 and fedora its /usr that python and its libs are installed into not /opt.