sys-apps/pyconfig_gen: Unknown DISTUTILS_USE_PEP517=

[bell07]

Describe the bug
I started my first Gentoo4rpi4 build. Installation fails because of sys-apps/pyconfig_gen corruption.

To Reproduce
Steps to reproduce the behavior:

1. emerge -e world

Expected behavior
world is emerged

Current behavior

Messages for package sys-apps/pyconfig_gen-1.2.0-r2::genpi64:
 * ERROR: sys-apps/pyconfig_gen-1.2.0-r2::genpi64 failed (depend phase):
 *   Unknown DISTUTILS_USE_PEP517=
 * 
 / * Call stack:
 \ *                      ebuild.sh, line 645:  Called source '/var/db/repos/genpi64-overlay/sys-apps/pyconfig_gen/pyconfig_gen-1.2.0-r2.ebuild'
 | *   pyconfig_gen-1.2.0-r2.ebuild, line   7:  Called inherit 'distutils-r1' 'desktop' 'xdg-utils'
 \ *                      ebuild.sh, line 317:  Called __qa_source '/var/db/repos/gentoo/eclass/distutils-r1.eclass'
 - *                      ebuild.sh, line 130:  Called source '/var/db/repos/gentoo/eclass/distutils-r1.eclass'
 | *            distutils-r1.eclass, line 354:  Called _distutils_set_globals
 *            distutils-r1.eclass, line 316:  Called die
 * The specific snippet of code:
 \ *   			die "Unknown DISTUTILS_USE_PEP517=${DISTUTILS_USE_PEP517}"
 * 
 * If you need support, post the output of `emerge --info '=sys-apps/pyconfig_gen-1.2.0-r2::genpi64'`,
 * the complete build log and the output of `emerge -pqv '=sys-apps/pyconfig_gen-1.2.0-r2::genpi64'`.
 \ * Working directory: '/usr/lib/python3.13/site-packages'
 * S: '/var/tmp/portage/sys-apps/pyconfig_gen-1.2.0-r2/work/pyconfig_gen-1.2.0'