From 9fe5709976a6e820a2a48c04a41fb84da9dd9eaa Mon Sep 17 00:00:00 2001
From: Astro <astro@spaceboyz.net>
Date: Sun, 4 Apr 2021 23:03:25 +0200
Subject: [PATCH] lxc-containers: add experimental lxc-reload on system change

---
 nix/nixos-module/server/lxc-containers.nix | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/nix/nixos-module/server/lxc-containers.nix b/nix/nixos-module/server/lxc-containers.nix
index 385c609..00c4cb8 100644
--- a/nix/nixos-module/server/lxc-containers.nix
+++ b/nix/nixos-module/server/lxc-containers.nix
@@ -170,7 +170,19 @@ in
 
   systemd.targets.lxc-containers = {
     wantedBy = [ "multi-user.target" ];
-    wants = map (ctName: "lxc@${ctName}.service")
+    wants = builtins.concatMap (ctName: [ "lxc@${ctName}.service" "lxc-reload@${ctName}.path" ])
       (builtins.attrNames containers);
   };
+
+  systemd.paths."lxc-reload@" = {
+    pathConfig = {
+      PathChanged = "/var/lib/lxc/%i/rootfs/init";
+    };
+  };
+  systemd.services."lxc-reload@" = {
+    requires = [ "lxc@%i.service" ];
+    serviceConfig.Type = "oneshot";
+    scriptArgs = "%i";
+    script = "/run/current-system/systemd/bin/systemctl reload lxc@$1.service || true";
+  };
 }