From 02dfc07a045c628dfa718f075e7dbdf092b523f6 Mon Sep 17 00:00:00 2001
From: "Tristan Helmich (omniIT)" <tristan.helmich@omniit.de>
Date: Wed, 14 Aug 2019 09:22:02 +0000
Subject: [PATCH] nixos/oxidized: Use symlinks for config files

The old `cp` suffers from a permission issue on the 2nd start of the
service. The files were copied from the read-only nix store. On the 2nd
start of the service the `cp` failed.
The new version force creates a symlink which does not suffer from this.
---
 nixos/modules/services/admin/oxidized.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nixos/modules/services/admin/oxidized.nix b/nixos/modules/services/admin/oxidized.nix
index 687cdfb5ba57..39112c3970d5 100644
--- a/nixos/modules/services/admin/oxidized.nix
+++ b/nixos/modules/services/admin/oxidized.nix
@@ -97,8 +97,8 @@ in
 
       preStart = ''
         mkdir -p ${cfg.dataDir}/.config/oxidized
-        cp -v ${cfg.routerDB} ${cfg.dataDir}/.config/oxidized/router.db
-        cp -v ${cfg.configFile} ${cfg.dataDir}/.config/oxidized/config
+        ln -f -s ${cfg.routerDB} ${cfg.dataDir}/.config/oxidized/router.db
+        ln -f -s ${cfg.configFile} ${cfg.dataDir}/.config/oxidized/config
       '';
 
       serviceConfig = {