From 47db174a3cdc93b8c9ce81dca47217c1ebd96146 Mon Sep 17 00:00:00 2001
From: Ashlynn Anderson <pea@pea.sh>
Date: Mon, 7 Jun 2021 15:44:13 -0400
Subject: [PATCH] nixos/self-deploy: make nixAttribute nullable (#125617)

Allows using a nix file that directly provides the derivation
---
 nixos/modules/services/system/self-deploy.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/services/system/self-deploy.nix b/nixos/modules/services/system/self-deploy.nix
index 3c82ed4fc593..33d15e08f4aa 100644
--- a/nixos/modules/services/system/self-deploy.nix
+++ b/nixos/modules/services/system/self-deploy.nix
@@ -37,7 +37,9 @@ in
     };
 
     nixAttribute = lib.mkOption {
-      type = lib.types.str;
+      type = with lib.types; nullOr str;
+
+      default = null;
 
       description = ''
         Attribute of `nixFile` that builds the current system.