cups service: fix client sockets

Use systemd to create the directory for UNIX socket. Also use localhost instead
of 127.0.0.1 as is done in default cupsd.conf so that IPv6 is enabled when
available.

1 files changed, 5 insertions, 2 deletions

diff --git a/nixos/modules/services/printing/cupsd.nix b/nixos/modules/services/printing/cupsd.nix
index 4c7f58d1d8bc..ecab8cfc7df9 100644
--- a/nixos/modules/services/printing/cupsd.nix
+++ b/nixos/modules/services/printing/cupsd.nix
@@ -124,7 +124,7 @@ in
 
       listenAddresses = mkOption {
         type = types.listOf types.str;
-        default = [ "127.0.0.1:631" ];
+        default = [ "localhost:631" ];
         example = [ "*:631" ];
         description = ''
           A list of addresses and ports on which to listen.
@@ -321,7 +321,10 @@ in
             ''}
           '';
 
-          serviceConfig.PrivateTmp = true;
+          serviceConfig = {
+            PrivateTmp = true;
+            RuntimeDirectory = [ "cups" ];
+          };
       };
 
     systemd.services.cups-browsed = mkIf avahiEnabled