From c1678c25679f3803509c66ae9870bea7d13aea84 Mon Sep 17 00:00:00 2001
From: Midnight Veil <midnightveil@fea.st>
Date: Sat, 9 Dec 2023 17:54:22 +1100
Subject: [PATCH] doc: mkYarnPackage/mkYarnModules should use offlineCache to
 prevent IFD

This is not mentioned elsewhere, and can be confusing.
---
 doc/languages-frameworks/javascript.section.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/doc/languages-frameworks/javascript.section.md b/doc/languages-frameworks/javascript.section.md
index 152974b465a5..5d2a6413e104 100644
--- a/doc/languages-frameworks/javascript.section.md
+++ b/doc/languages-frameworks/javascript.section.md
@@ -354,6 +354,7 @@ mkYarnPackage rec {
 
   - The `echo 9` steps comes from this answer: <https://stackoverflow.com/a/49139496>
   - Exporting the headers in `npm_config_nodedir` comes from this issue: <https://github.com/nodejs/node-gyp/issues/1191#issuecomment-301243919>
+- `offlineCache` (described [above](#javascript-yarn2nix-preparation)) must be specified to avoid [Import From Derivation](#ssec-import-from-derivation) (IFD) when used inside Nixpkgs.
 
 ## Outside Nixpkgs {#javascript-outside-nixpkgs}