cmd/prune: Add metavar for --insert-only
Minor, though should make the `--help` output clearer (even though users
don't really interact directly with this script).
@@ -29,12 +29,11 @@ parser = argparse.ArgumentParser()
parser.add_argument("--workdir", required=True, help="Path to workdir")
parser.add_argument("--keep-last-n", type=int, default=DEFAULT_KEEP_LAST_N,
help="Number of untagged builds to keep (0 for all)")
-parser.add_argument("--insert-only",
- help="Append a new latest build, do not prune",
- action='store')
parser.add_argument("--timestamp-only",
help="Update timestamp on builds.json",
action='store_true')
+parser.add_argument("--insert-only", metavar="BUILDID", action='store',
+ help="Append a new latest build, do not prune")
args = parser.parse_args()
builds = []
