pyoxidizer: use Python 3.9 (BC) Newer versions of PyOxidizer use Python 3.9 by default. We previously pinned the version to 3.8 to facilitate porting to a new PyOxidizer version and diffing results. Now that the porting work is complete, let's bump Python to Python 3.9. This will effectively change our Windows Inno and WiX Python 3 installers from Python 3.8 to 3.9. .. bc:: Windows .msi and .exe installers now use Python 3.9 instead of Python 3.8. Differential Revision: https://phab.mercurial-scm.org/D10689

--- a/rust/hgcli/pyoxidizer.bzl	Thu May 06 16:11:13 2021 -0700
+++ b/rust/hgcli/pyoxidizer.bzl	Thu May 06 09:27:22 2021 -0700
@@ -40,7 +40,7 @@
 set_build_path(ROOT + "/build/pyoxidizer")
 
 def make_distribution():
-    return default_python_distribution(python_version = "3.8")
+    return default_python_distribution(python_version = "3.9")
 
 def resource_callback(policy, resource):
     if not IS_WINDOWS: