set break-system-packages = true

Author: fdintino

wheelbuild/build.sh

@@ -29,6 +29,8 @@ echo "::group::Install a virtualenv"
   export LATEST_3p11="3.11.0rc2"
   # can't use default 7.3.1 on macOS due to https://foss.heptapod.net/pypy/pypy/-/issues/3229
   LATEST_PP_7p3=7.3.3
+  mkdir -p $HOME/.config/pip
+  printf "[global]\nbreak-system-packages = true\n" > $HOME/.config/pip/pip.conf
   python3 -m pip install virtualenv
   before_install
 echo "::endgroup::"