This package is depending on dev-python/mysql-python which is broken and abandoned by upstream. You should attempt to switch to dev-python/mysqlclient which is a continued fork of mysql-python. Please test that it works like it's supposed to, so broken mysql-python can be last-rited and removed from the tree.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c2c22b849b4b63544729c075468d9d28be2cd92f commit c2c22b849b4b63544729c075468d9d28be2cd92f Author: Louis Sautier <sbraz@gentoo.org> AuthorDate: 2020-10-16 12:01:08 +0000 Commit: Louis Sautier <sbraz@gentoo.org> CommitDate: 2020-10-16 16:30:13 +0000 dev-python/sqlalchemy: bump to 1.3.20, various fixes * Backport some commits to fix PyPy3 support. * Use pytest-xdist to speed up tests. * Recommend maintained MySQL packages instead of mysql-python. * Remove unused mock test dependency. * Remove Python 2 workaround. * Stop compressing examples. * This version supports pytest 6 (#748921). Closes: https://bugs.gentoo.org/748921 Closes: https://bugs.gentoo.org/710040 Package-Manager: Portage-3.0.8, Repoman-3.0.1 Signed-off-by: Louis Sautier <sbraz@gentoo.org> dev-python/sqlalchemy/Manifest | 1 + .../sqlalchemy/files/sqlalchemy-1.3.20-pypy3.patch | 188 +++++++++++++++++++++ dev-python/sqlalchemy/sqlalchemy-1.3.20.ebuild | 68 ++++++++ 3 files changed, 257 insertions(+)