Hi,

Can we add the following patch to the toolchain.eclass? I want to stop 
having to mess with this overlay. The diff can be generated by grabbing 
the repo https://github.com/Lucretia/ada-overlay and running 
./scripts/diff_eclass.sh.

The only thing I'm not sure about is the BDEPEND stuff.

The reason for doing this is because gnat-gpl is dead, more info can be 
found here https://www.adacore.com/community.

The 
https://github.com/Lucretia/ada-overlay/tree/master/dev-lang/ada-bootstrap 
ebuilds provide bootstrap compilers, the archives are hosted on dropbox, 
from 9.5.0 -> 14.

The scripts/build-bootstrap.sh script will build a bootstrap for a 
particular version based on an env var.

As for anything in dev-ada/* well, the ada guy would need to work on 
that really, I'm not really experienced enough to handle it properly.

Given GCC is masked up to :10 now, the gnat gpr tools / libs might be 
easier to get going with single versions covering numerous toolchain 
versions.

Alire would need to be added at some point, http://alire.ada.dev/ to 
provide an easier way to get packages going.

I originally envisioned gnatmake, gprbuild eclasses to cover building 
simple projects with one entry point (gnatmake) and projects (gprbuild). 
I think an alire based eclass would need to be added as well.

Thanks,
Luke.