From 6dd5c9ee3f236cb118bf74417ef03ed319b769c8 Mon Sep 17 00:00:00 2001
From: emilylange <git@emilylange.de>
Date: Wed, 28 Feb 2024 18:22:34 +0100
Subject: [PATCH] grafana-agent: add `passthru.updateScript`

`nix-update` has support for `fetchYarnDeps` via the attribute name
`offlineCache`.

Our yarn FOD is called `frontendYarnOfflineCache`, which I find more
descriptive and would like to keep this way.

To work around this requirement, this adds an alias in `passthru`.

The addition of `passthru.updateScript` also allows `nixpkgs-update` to
update this package when the yarn FOD hash needs to be updated.

See the following error from the last `nixpkgs-update` run:
https://r.ryantm.com/log/grafana-agent/2024-02-27.log
---
 .../monitoring/grafana-agent/default.nix      | 20 ++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/pkgs/servers/monitoring/grafana-agent/default.nix b/pkgs/servers/monitoring/grafana-agent/default.nix
index 6ddaf2ba07a2..a2506ef1a594 100644
--- a/pkgs/servers/monitoring/grafana-agent/default.nix
+++ b/pkgs/servers/monitoring/grafana-agent/default.nix
@@ -2,10 +2,11 @@
 , buildGoModule
 , fetchFromGitHub
 , fetchYarnDeps
-, prefetch-yarn-deps
 , grafana-agent
+, nix-update-script
 , nixosTests
 , nodejs
+, prefetch-yarn-deps
 , stdenv
 , systemd
 , testers
@@ -89,13 +90,18 @@ buildGoModule rec {
       $out/bin/grafana-agent
   '';
 
-  passthru.tests = {
-    inherit (nixosTests) grafana-agent;
-    version = testers.testVersion {
-      inherit version;
-      command = "${lib.getExe grafana-agent} --version";
-      package = grafana-agent;
+  passthru = {
+    tests = {
+      inherit (nixosTests) grafana-agent;
+      version = testers.testVersion {
+        inherit version;
+        command = "${lib.getExe grafana-agent} --version";
+        package = grafana-agent;
+      };
     };
+    updateScript = nix-update-script { };
+    # alias for nix-update to be able to find and update this attribute
+    offlineCache = frontendYarnOfflineCache;
   };
 
   meta = {