From fc7723297f36404dd0395914e53025afd90cdb27 Mon Sep 17 00:00:00 2001
From: nialov <nikolasovaskainen@gmail.com>
Date: Sun, 19 Jan 2025 10:48:22 +0200
Subject: [PATCH] nixos/gollum: check if stateDir is an existing bare git
 repository

If stateDir is directed at a bare repository, git init will generate
a normal repository within stateDir instead of letting gollum use
the bare repository.
---
 nixos/modules/services/misc/gollum.nix | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/nixos/modules/services/misc/gollum.nix b/nixos/modules/services/misc/gollum.nix
index 525333d80d11..7179273f07ae 100644
--- a/nixos/modules/services/misc/gollum.nix
+++ b/nixos/modules/services/misc/gollum.nix
@@ -145,10 +145,16 @@ in
       after = [ "network.target" ];
       wantedBy = [ "multi-user.target" ];
       path = [ pkgs.git ];
-
       preStart = ''
-        # This is safe to be run on an existing repo
-        git init ${cfg.stateDir}
+        # Check if it's a bare repository.
+        IS_BARE=$(git -C "${cfg.stateDir}" rev-parse --is-bare-repository 2>/dev/null || echo "false")
+
+        if [ "$IS_BARE" = "true" ]; then
+          echo "Directory is a bare repository. Skipping initialization."
+        else
+          echo "Directory is not a bare repository. Initializing..."
+          git init "${cfg.stateDir}"
+        fi
       '';
 
       serviceConfig = {