From cee5ddbb284692d98e35f97d2aba0ab9b422ff3a Mon Sep 17 00:00:00 2001
From: David Anderson <dave@natulte.net>
Date: Sun, 19 Apr 2020 22:57:07 -0700
Subject: [PATCH] nixos/tailscale: set a CacheDir in the systemd unit.

Fixes a bug where tailscaled drops some files into / when CacheDir
is unset.

Signed-off-by: David Anderson <dave@natulte.net>
---
 nixos/modules/services/networking/tailscale.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/services/networking/tailscale.nix b/nixos/modules/services/networking/tailscale.nix
index 513c42b40117..4d6aeb75ebd1 100644
--- a/nixos/modules/services/networking/tailscale.nix
+++ b/nixos/modules/services/networking/tailscale.nix
@@ -37,7 +37,10 @@ in {
         RuntimeDirectoryMode = 755;
 
         StateDirectory = "tailscale";
-        StateDirectoryMode = 700;
+        StateDirectoryMode = 750;
+
+        CacheDirectory = "tailscale";
+        CacheDirectoryMode = 750;
 
         Restart = "on-failure";
       };