distutils-r1.eclass: Print deprecation warning for distutils builds

Print deprecation warnings for non-PEP517 builds using plain distutils. This is a small subset of Python packages overall, and the first step towards deprecating legacy build support. Transitioning pure distutils packages is also important to avoid .egg-info collisions when we switch from CPython distutils to setuptools-vendored distutils. Signed-off-by: Michał Górny <[email protected]>
johu · Apr 11, 2022 · 41f25be · 41f25be
1 parent b711a25
commit 41f25be
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/eclass/distutils-r1.eclass b/eclass/distutils-r1.eclass
@@ -867,6 +867,15 @@ distutils-r1_python_prepare_all() {
  if [[ ! ${DISTUTILS_USE_PEP517} ]]; then
  _distutils-r1_disable_ez_setup
  _distutils-r1_handle_pyproject_toml
+
+ case ${DISTUTILS_USE_SETUPTOOLS} in
+ no)
+ eqawarn "Non-PEP517 builds are deprecated for ebuilds using plain distutils."
+ eqawarn "Please migrate to DISTUTILS_USE_PEP517=setuptools."
+ eqawarn "Please see Python Guide for more details:"
+ eqawarn " https://projects.gentoo.org/python/guide/distutils.html"
+ ;;
+ esac
  fi
 
  if [[ ${DISTUTILS_IN_SOURCE_BUILD} && ! ${DISTUTILS_SINGLE_IMPL} ]]