fix(deertopia): Jellyfin and Copyparty umasks

modules/nixos/deertopia/copyparty.nix

@@ -19,9 +19,18 @@ in {
 
     nixpkgs.overlays = [ inputs.copyparty.overlays.default ];
 
+    # HACK: Ad-hoc permissions, as typical.
+    users.users.copyparty.extraGroups = [ "jellyfin" ];
+
+    # HACK: Make files created by copypaste.service initialise with the mode
+    # 775.
+    systemd.services.copyparty.serviceConfig.UMask = lib.mkForce "002";
+
     services.copyparty = {
       enable = true;
       settings = {
+        # These three options are necessary for SSO integration.  No idea what
+        # they do. }:)
         xff-src = "lan";
         idp-h-usr = "remote-user";
         idp-h-grp = "remote-groups";
@@ -42,6 +51,8 @@ in {
         enableACME = true;
         extraConfig = ''
           include ${./authelia/authelia-location.conf};
+          # Increase limit of upload sizes.
+          client_max_body_size 20G;
         '';
         locations."/".extraConfig = ''
           include ${./authelia/authelia-authrequest.conf};