Add CPython 3.8.0b1

plugins/python-build/bin/python-build

@@ -1889,6 +1889,11 @@ build_package_verify_py38() {
   build_package_verify_py37 "$1" "${2:-3.8}"
 }
 
+# Post-install check for Python 3.9.x
+build_package_verify_py39() {
+  build_package_verify_py38 "$1" "${2:-3.9}"
+}
+
 # Copy Tools/gdb/libpython.py to pythonX.Y-gdb.py (#1190)
 build_package_copy_python_gdb() {
   if [ -e "$BUILD_PATH/$1/Tools/gdb/libpython.py" ]; then

plugins/python-build/share/python-build/3.8-dev

@@ -3,4 +3,4 @@ prefer_openssl11
 export PYTHON_BUILD_CONFIGURE_WITH_OPENSSL=1
 install_package "openssl-1.1.0j" "https://www.openssl.org/source/openssl-1.1.0j.tar.gz#31bec6c203ce1a8e93d5994f4ed304c63ccf07676118b6634edded12ad1b3246" mac_openssl --if has_broken_mac_openssl
 install_package "readline-8.0" "https://ftpmirror.gnu.org/readline/readline-8.0.tar.gz#e339f51971478d369f8a053a330a190781acb9864cf4c541060f12078948e461" mac_readline --if has_broken_mac_readline
-install_git "Python-3.8-dev" "https://github.com/python/cpython" master standard verify_py38 copy_python_gdb ensurepip
+install_git "Python-3.8-dev" "https://github.com/python/cpython" "3.8" standard verify_py38 copy_python_gdb ensurepip

plugins/python-build/share/python-build/3.9-dev

@@ -0,0 +1,6 @@
+#require_gcc
+prefer_openssl11
+export PYTHON_BUILD_CONFIGURE_WITH_OPENSSL=1
+install_package "openssl-1.1.0j" "https://www.openssl.org/source/openssl-1.1.0j.tar.gz#31bec6c203ce1a8e93d5994f4ed304c63ccf07676118b6634edded12ad1b3246" mac_openssl --if has_broken_mac_openssl
+install_package "readline-8.0" "https://ftpmirror.gnu.org/readline/readline-8.0.tar.gz#e339f51971478d369f8a053a330a190781acb9864cf4c541060f12078948e461" mac_readline --if has_broken_mac_readline
+install_git "Python-3.9-dev" "https://github.com/python/cpython" master standard verify_py39 copy_python_gdb ensurepip