From 214cf0b9343dc619a36aedd2320bb1d73915c6de Mon Sep 17 00:00:00 2001
From: Maximilian Bosch <maximilian@mbosch.me>
Date: Thu, 21 Sep 2023 01:09:32 +0200
Subject: [PATCH] nixos/rust-motd: .attrs.json -> "$NIX_ATTRS_JSON_FILE"

That way the derivation can also be built in a `nix-shell` where
`.attrs.json` isn't under "$NIX_BUILD_TOP".
---
 nixos/modules/programs/rust-motd.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos/modules/programs/rust-motd.nix b/nixos/modules/programs/rust-motd.nix
index 3e3ce63ab212..8999e882d01a 100644
--- a/nixos/modules/programs/rust-motd.nix
+++ b/nixos/modules/programs/rust-motd.nix
@@ -28,7 +28,7 @@ let
       nativeBuildInputs = [ pkgs.remarshal pkgs.jq ];
     })
     ''
-      cat "$NIX_BUILD_TOP"/.attrs.json \
+      cat "$NIX_ATTRS_JSON_FILE" \
         | jq '${concatMapStringsSep " + " (key: ''."${key}"'') (attrNames orderedSections)}' \
         | json2toml /dev/stdin "$out"
     '';