This is a sort of automagic, when doxygen is available, then more files are installed (without USE=doc obviously) Files are in /usr/share/doc/lhapdf-6.5.1/doxygen
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=8b95f55142bb7614a54052612f65c9109c9c76b7 commit 8b95f55142bb7614a54052612f65c9109c9c76b7 Author: Alexander Puck Neuwirth <alexander@neuwirth-informatik.de> AuthorDate: 2025-05-12 12:00:07 +0000 Commit: Nowa Ammerlaan <nowa@gentoo.org> CommitDate: 2025-05-17 11:02:05 +0000 sci-physics/lhapdf: use_enable doxygen Closes: https://bugs.gentoo.org/856799 Signed-off-by: Alexander Puck Neuwirth <alexander@neuwirth-informatik.de> Part-of: https://github.com/gentoo/gentoo/pull/42051 Signed-off-by: Nowa Ammerlaan <nowa@gentoo.org> sci-physics/lhapdf/lhapdf-6.5.5-r1.ebuild | 78 +++++++++++++++++++++++++++++++ sci-physics/lhapdf/lhapdf-9999.ebuild | 6 +-- 2 files changed, 81 insertions(+), 3 deletions(-)