dev-python/ipython has the local USE flag "matplotlib". Checking the currently listed ebuilds, this USE flag is not used anywhere. I suggest to remove the "matplotlib" USE flag.
Thanks for the report!
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=65976d31b9a702568e62d72e3cba17d6a38aa4a2 commit 65976d31b9a702568e62d72e3cba17d6a38aa4a2 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2023-05-05 13:52:38 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2023-05-05 13:53:20 +0000 dev-python/ipython: Remove unused 'matplotlib' flag Closes: https://bugs.gentoo.org/905747 Signed-off-by: Michał Górny <mgorny@gentoo.org> dev-python/ipython/ipython-8.12.0.ebuild | 2 +- dev-python/ipython/ipython-8.13.0.ebuild | 2 +- dev-python/ipython/ipython-8.13.1.ebuild | 2 +- dev-python/ipython/ipython-8.13.2.ebuild | 2 +- dev-python/ipython/metadata.xml | 1 - 5 files changed, 4 insertions(+), 5 deletions(-)