[PATCH 26/34] v2: avoid redundant/repeated configs for git partition repos

["Eric Wong (Contractor, The Linux Foundation)" <e@80x24.org>]

We'll let the config of all.git dictate every other subrepo to
ease maintenance and configuration.  The "include" directive has
been supported since git 1.7.10, so it's safe to depend on as v2
requires git 2.6.0+ anyways for "get-mark" in fast-import.
---
 lib/PublicInbox/SearchIdx.pm  |  2 +-
 lib/PublicInbox/V2Writable.pm | 10 +++++++---
 t/init.t                      |  2 ++
 t/v2writable.t                | 16 ++++++++++++++++
 4 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/lib/PublicInbox/SearchIdx.pm b/lib/PublicInbox/SearchIdx.pm
index 71469a9..725bbd8 100644
--- a/lib/PublicInbox/SearchIdx.pm
+++ b/lib/PublicInbox/SearchIdx.pm
@@ -817,7 +817,7 @@ sub _read_git_config_perm {
 	my ($self) = @_;
 	my @cmd = qw(config);
 	if ($self->{version} == 2) {
-		push @cmd, "--file=$self->{mainrepo}/inbox-config";
+		push @cmd, "--file=$self->{mainrepo}/all.git/config";
 	}
 	my $fh = $self->{git}->popen(@cmd, 'core.sharedRepository');
 	local $/ = "\n";
diff --git a/lib/PublicInbox/V2Writable.pm b/lib/PublicInbox/V2Writable.pm
index 31376db..461432e 100644
--- a/lib/PublicInbox/V2Writable.pm
+++ b/lib/PublicInbox/V2Writable.pm
@@ -244,16 +244,20 @@ sub git_init {
 	die "$git_dir exists\n" if -e $git_dir;
 	my @cmd = (qw(git init --bare -q), $git_dir);
 	PublicInbox::Import::run_die(\@cmd);
-	@cmd = (qw/git config/, "--file=$git_dir/config",
-			'repack.writeBitmaps', 'true');
-	PublicInbox::Import::run_die(\@cmd);
 
 	my $all = "$self->{-inbox}->{mainrepo}/all.git";
 	unless (-d $all) {
 		@cmd = (qw(git init --bare -q), $all);
 		PublicInbox::Import::run_die(\@cmd);
+		@cmd = (qw/git config/, "--file=$all/config",
+				'repack.writeBitmaps', 'true');
+		PublicInbox::Import::run_die(\@cmd);
 	}
 
+	@cmd = (qw/git config/, "--file=$git_dir/config",
+			'include.path', '../../all.git/config');
+	PublicInbox::Import::run_die(\@cmd);
+
 	my $alt = "$all/objects/info/alternates";
 	my $new_obj_dir = "../../git/$new.git/objects";
 	my %alts;
diff --git a/t/init.t b/t/init.t
index 54b90ec..6ae608e 100644
--- a/t/init.t
+++ b/t/init.t
@@ -38,6 +38,8 @@ SKIP: {
 	ok(-d "$tmpdir/v2list", 'v2list directory exists');
 	ok(-f "$tmpdir/v2list/msgmap.sqlite3", 'msgmap exists');
 	ok(-d "$tmpdir/v2list/all.git", 'catch-all.git directory exists');
+	@cmd = (qw(git config), "--file=$tmpdir/v2list/all.git/config",
+		qw(core.sharedRepository 0644));
 }
 
 done_testing();
diff --git a/t/v2writable.t b/t/v2writable.t
index bf8ae5e..2d35aca 100644
--- a/t/v2writable.t
+++ b/t/v2writable.t
@@ -32,6 +32,22 @@ my $mime = PublicInbox::MIME->create(
 
 my $im = PublicInbox::V2Writable->new($ibx, 1);
 ok($im->add($mime), 'ordinary message added');
+
+if ('ensure git configs are correct') {
+	my @cmd = (qw(git config), "--file=$mainrepo/all.git/config",
+		qw(core.sharedRepository 0644));
+	is(system(@cmd), 0, "set sharedRepository in all.git");
+	my $git0 = PublicInbox::Git->new("$mainrepo/git/0.git");
+	my $fh = $git0->popen(qw(config core.sharedRepository));
+	my $v = eval { local $/; <$fh> };
+	chomp $v;
+	is($v, '0644', 'child repo inherited core.sharedRepository');
+	$fh = $git0->popen(qw(config --bool repack.writeBitmaps));
+	$v = eval { local $/; <$fh> };
+	chomp $v;
+	is($v, 'true', 'child repo inherited repack.writeBitmaps');
+}
+
 {
 	my @warn;
 	local $SIG{__WARN__} = sub { push @warn, @_ };
-- 
EW