Installation of dev-lang/gnat-gpl from an existing binary package fails, if no other ada compiler is installed on the system. The check for the compiler should be moved to a later phase in the ebuild that is skipped for binary packages.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=4dc25e3544841945836b4ce84bb9858df831ceab commit 4dc25e3544841945836b4ce84bb9858df831ceab Author: Tupone Alfredo <tupone@gentoo.org> AuthorDate: 2018-04-20 06:24:13 +0000 Commit: Tupone Alfredo <tupone@gentoo.org> CommitDate: 2018-04-20 06:24:13 +0000 dev-lang/gnat-gpl: Fix binary install Closes: https://bugs.gentoo.org/653532 Package-Manager: Portage-2.3.24, Repoman-2.3.6 dev-lang/gnat-gpl/gnat-gpl-2016.ebuild | 5 +++-- dev-lang/gnat-gpl/gnat-gpl-2017.ebuild | 4 ++-- 2 files changed, 5 insertions(+), 4 deletions(-)