We should package a newer version of dev-lang/spark from https://github.com/AdaCore/spark2014. It looks like https://alire.ada.dev/crates/gnatprove versions it roughly like GCC versions(?) as they use '14.1.1', but gnatprove is not part of GCC.
We have to use the 'fsf' branch, I think.
commit 3010edcdaad2fb5979f46c373da4985c729e427e Author: Alfredo Tupone <tupone@gentoo.org> Date: Tue Feb 11 18:27:56 2025 +0100 dev-lang/spark: add 2024.01.11 Signed-off-by: Alfredo Tupone <tupone@gentoo.org>