[gentoo-portage-dev] [PATCH] [sync] Increase the default git sync-depth to 10

[Michał Górny]

Increate the default git sync-depth from 1 to 10, to ensure that
gentoo-mirror git clones retain at least a single original signed
commit.
---
 man/portage.5                            | 10 ++++++++--
 pym/portage/sync/modules/git/__init__.py |  2 +-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/man/portage.5 b/man/portage.5
index 963f49d..c1e4d97 100644
--- a/man/portage.5
+++ b/man/portage.5
@@ -965,8 +965,14 @@ Specifies priority of given repository.
 Specifies CVS repository.
 .TP
 .B sync\-depth
-Specifies clone depth to use for DVCS repositories. Defaults to 1 (only
-the newest commit). If set to 0, the depth is unlimited.
+Specifies clone depth to use for DVCS repositories. Defaults to 10
+(commits deep). If set to 0, the depth is unlimited.
+.br
+The default depth of 10 was chosen as a compromise between space
+and bandwidth savings, and maintaining a history of recent commits.
+It is especially important for gentoo-mirror repositories where the most
+recent commits are automated and unsigned, and it is necessary to
+rewind the history to the newest signed commit for OpenPGP verification.
 .TP
 .B sync\-git\-clone\-extra\-opts
 Extra options to give to git when cloning repository (git clone).
diff --git a/pym/portage/sync/modules/git/__init__.py b/pym/portage/sync/modules/git/__init__.py
index d5eb5c6..54070fc 100644
--- a/pym/portage/sync/modules/git/__init__.py
+++ b/pym/portage/sync/modules/git/__init__.py
@@ -18,7 +18,7 @@ class CheckGitConfig(CheckSyncConfig):
 	def check_depth(self):
 		d = self.repo.sync_depth
 		# default
-		self.repo.sync_depth = 1
+		self.repo.sync_depth = 10
 
 		if d is not None:
 			try:
-- 
2.10.2