From 34a764ce87340d0008cf5a06978e73ec7a794334 Mon Sep 17 00:00:00 2001
From: danbst <abcz2.uprola@gmail.com>
Date: Thu, 17 Jan 2019 21:18:45 +0200
Subject: [PATCH] zramSwap: remove basic.target for zram devices

This creates a dependency cycle when used with boot.tmpOnTmpfs:
basic.target <- tmp.mount <- swap.target <- zram-init-dev0 <- basic.target

This same fix is done already for tmp.mount

Fixes https://github.com/NixOS/nixpkgs/issues/47474
---
 nixos/modules/config/zram.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/nixos/modules/config/zram.nix b/nixos/modules/config/zram.nix
index f8ff926cd56..925d945c081 100644
--- a/nixos/modules/config/zram.nix
+++ b/nixos/modules/config/zram.nix
@@ -135,6 +135,7 @@ in
             requires = [ "dev-${dev}.device" "zram-reloader.service" ];
             before = [ "dev-${dev}.swap" ];
             requiredBy = [ "dev-${dev}.swap" ];
+            unitConfig.DefaultDependencies = false; # needed to prevent a cycle
             serviceConfig = {
               Type = "oneshot";
               RemainAfterExit = true;
@@ -158,6 +159,7 @@ in
           description = "Reload zram kernel module when number of devices changes";
           wants = [ "systemd-udevd.service" ];
           after = [ "systemd-udevd.service" ];
+          unitConfig.DefaultDependencies = false; # needed to prevent a cycle
           serviceConfig = {
             Type = "oneshot";
             RemainAfterExit = true;