From 859687313be7d90433f631a7ef35af9791350a9f Mon Sep 17 00:00:00 2001
From: Eric Engestrom <eric@engestrom.ch>
Date: Fri, 24 Jul 2020 14:20:44 +0200
Subject: bin/khronos-update: add workaround for python bug 9625

The bug causes `choices` to break `nargs='*'`.

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6057>
---
 bin/khronos-update.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'bin')

diff --git a/bin/khronos-update.py b/bin/khronos-update.py
index 6f93c71f831..cc82a07b08c 100755
--- a/bin/khronos-update.py
+++ b/bin/khronos-update.py
@@ -191,7 +191,10 @@ if __name__ == '__main__':
 
     parser = argparse.ArgumentParser()
     parser.add_argument('apis', nargs='*',
-                        choices=[group['api'] for group in SOURCES],
+                        # the `[[]]` here is a workaround for python bug 9625
+                        # where having `choices` breaks `nargs='*'`:
+                        # https://bugs.python.org/issue9625
+                        choices=[group['api'] for group in SOURCES] + [[]],
                         help='Only update the APIs specified.')
     args = parser.parse_args()
 
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