I’m currently working on a setup action for Fortran compilers, I got GFortran working with plenty of versions on Ubuntu, MacOS and Windows this way, but haven’t come around to get Intel oneAPI or NVHPC in yet. At least for Linux and MacOS I have working snippets to efficiently install and use Intel oneAPI in a workflow.
Help is definitely welcome, once it becomes a real thing we can move it to the Fortran-lang organization.