Make bdist_* commands respect --skip-build passed to bdist (#10946).

There was already a test for this, but it was complicated and had a
subtle bug (custom command objects need to be put in dist.command_obj so
that other command objects may see them) that rendered it moot.

1 files changed, 5 insertions, 1 deletions

diff --git a/Lib/packaging/command/bdist_wininst.py b/Lib/packaging/command/bdist_wininst.py
index dbb74ea..7dbb39b 100644
--- a/Lib/packaging/command/bdist_wininst.py
+++ b/Lib/packaging/command/bdist_wininst.py
@@ -67,13 +67,15 @@ class bdist_wininst(Command):
         self.dist_dir = None
         self.bitmap = None
         self.title = None
-        self.skip_build = False
+        self.skip_build = None
         self.install_script = None
         self.pre_install_script = None
         self.user_access_control = None
 
 
     def finalize_options(self):
+        self.set_undefined_options('bdist', 'skip_build')
+
         if self.bdist_dir is None:
             if self.skip_build and self.plat_name:
                 # If build is skipped and plat_name is overridden, bdist will
@@ -83,8 +85,10 @@ class bdist_wininst(Command):
                 # next the command will be initialized using that name
             bdist_base = self.get_finalized_command('bdist').bdist_base
             self.bdist_dir = os.path.join(bdist_base, 'wininst')
+
         if not self.target_version:
             self.target_version = ""
+
         if not self.skip_build and self.distribution.has_ext_modules():
             short_version = get_python_version()
             if self.target_version and self.target_version != short_version: