repoman: bail out if unsupported manifest-hashes

1 files changed, 25 insertions, 0 deletions

diff --git a/bin/repoman b/bin/repoman
index 711fce98b..7943f54ef 100755
--- a/bin/repoman
+++ b/bin/repoman
@@ -587,6 +587,31 @@ manifest_hashes = repo_config.manifest_hashes
 if manifest_hashes is None:
 	manifest_hashes = portage.const.MANIFEST2_HASH_DEFAULTS
 
+if options.mode in ("commit", "fix", "manifest"):
+	if portage.const.MANIFEST2_REQUIRED_HASH not in manifest_hashes:
+		msg = ("The 'manifest-hashes' setting in the '%s' repository's "
+		"metadata/layout.conf does not contain the '%s' hash which "
+		"is required by this portage version. You will have to "
+		"upgrade portage if you want to generate valid manifests for "
+		"this repository.") % \
+		(repo_config.name, portage.const.MANIFEST2_REQUIRED_HASH)
+		for line in textwrap.wrap(msg, 70):
+			logging.error(line)
+		sys.exit(1)
+
+	unsupported_hashes = manifest_hashes.difference(
+		portage.const.MANIFEST2_HASH_FUNCTIONS)
+	if unsupported_hashes:
+		msg = ("The 'manifest-hashes' setting in the '%s' repository's "
+		"metadata/layout.conf contains one or more hash types '%s' "
+		"which are not supported by this portage version. You will "
+		"have to upgrade portage if you want to generate valid "
+		"manifests for this repository.") % \
+		(repo_config.name, " ".join(sorted(unsupported_hashes)))
+		for line in textwrap.wrap(msg, 70):
+			logging.error(line)
+		sys.exit(1)
+
 if "commit" == options.mode and \
 	repo_config.name == "gentoo" and \
 	"RMD160" in manifest_hashes and \