doc/contributing: clarify stdenv.lib deprecation

1 files changed, 2 insertions, 1 deletions

diff --git a/doc/contributing/coding-conventions.chapter.md b/doc/contributing/coding-conventions.chapter.md
index eccf4f7436e..a95b600a420 100644
--- a/doc/contributing/coding-conventions.chapter.md
+++ b/doc/contributing/coding-conventions.chapter.md
@@ -171,7 +171,8 @@
 
 - Arguments should be listed in the order they are used, with the exception of `lib`, which always goes first.
 
-- Prefer using the top-level `lib` over its alias `stdenv.lib`. `lib` is unrelated to `stdenv`, and so `stdenv.lib` should only be used as a convenience alias when developing to avoid having to modify the function inputs just to test something out.
+- The top-level `lib` must be used in the master and 21.05 branch over its alias `stdenv.lib` as it now causes evaluation errors when aliases are disabled which is the case for ofborg.
+  `lib` is unrelated to `stdenv`, and so `stdenv.lib` should only be used as a convenience alias when developing locally to avoid having to modify the function inputs just to test something out.
 
 ## Package naming {#sec-package-naming}