From be0fda65110b123a09313ca03d087a16a63276ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Forsman?= <bjorn.forsman@gmail.com>
Date: Sun, 5 Jan 2025 21:23:34 +0100
Subject: [PATCH] homepage-dashboard: prefix nixpkgs-specific env var with
 NIXPKGS_

I thought HOMEPAGE_CACHE_DIR was an upstream env var, and it confused me
a lot. Let's prefix it with NIXPKGS_ to make it clear that it's nixpkgs
specific.
---
 nixos/modules/services/misc/homepage-dashboard.nix         | 2 +-
 pkgs/servers/homepage-dashboard/default.nix                | 4 ++--
 pkgs/servers/homepage-dashboard/prerender_cache_path.patch | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/nixos/modules/services/misc/homepage-dashboard.nix b/nixos/modules/services/misc/homepage-dashboard.nix
index 612a88ed48b5..a4e5b8d2fc8c 100644
--- a/nixos/modules/services/misc/homepage-dashboard.nix
+++ b/nixos/modules/services/misc/homepage-dashboard.nix
@@ -240,7 +240,7 @@ in
 
         environment = {
           HOMEPAGE_CONFIG_DIR = configDir;
-          HOMEPAGE_CACHE_DIR = "/var/cache/homepage-dashboard";
+          NIXPKGS_HOMEPAGE_CACHE_DIR = "/var/cache/homepage-dashboard";
           PORT = toString cfg.listenPort;
           LOG_TARGETS = lib.mkIf managedConfig "stdout";
         };
diff --git a/pkgs/servers/homepage-dashboard/default.nix b/pkgs/servers/homepage-dashboard/default.nix
index f586ede472df..c316faf358f0 100644
--- a/pkgs/servers/homepage-dashboard/default.nix
+++ b/pkgs/servers/homepage-dashboard/default.nix
@@ -76,14 +76,14 @@ buildNpmPackage rec {
     # write its prerender cache.
     #
     # This patch ensures that the cache implementation respects the env
-    # variable `HOMEPAGE_CACHE_DIR`, which is set by default in the
+    # variable `NIXPKGS_HOMEPAGE_CACHE_DIR`, which is set by default in the
     # wrapper below.
     (cd "$out" && patch -p1 <${./prerender_cache_path.patch})
 
     makeWrapper $out/share/homepage/server.js $out/bin/homepage \
       --set-default PORT 3000 \
       --set-default HOMEPAGE_CONFIG_DIR /var/lib/homepage-dashboard \
-      --set-default HOMEPAGE_CACHE_DIR /var/cache/homepage-dashboard
+      --set-default NIXPKGS_HOMEPAGE_CACHE_DIR /var/cache/homepage-dashboard
 
     ${if enableLocalIcons then installLocalIcons else ""}
 
diff --git a/pkgs/servers/homepage-dashboard/prerender_cache_path.patch b/pkgs/servers/homepage-dashboard/prerender_cache_path.patch
index 05746b5601c4..1d8c3b34384a 100644
--- a/pkgs/servers/homepage-dashboard/prerender_cache_path.patch
+++ b/pkgs/servers/homepage-dashboard/prerender_cache_path.patch
@@ -12,7 +12,7 @@ index b1b74d8..a46c80b 100644
          this.fs = ctx.fs;
          this.flushToDisk = ctx.flushToDisk;
 -        this.serverDistDir = ctx.serverDistDir;
-+        this.serverDistDir = path.join(process.env.HOMEPAGE_CACHE_DIR, "homepage");
++        this.serverDistDir = path.join(process.env.NIXPKGS_HOMEPAGE_CACHE_DIR, "homepage");
          this.appDir = !!ctx._appDir;
          if (ctx.maxMemoryCacheSize) {
              this.memoryCache = new _lruCache.default({