From 66e92385b994a9758e69853618544bfa9f1b1800 Mon Sep 17 00:00:00 2001
From: Ben Siraphob <bensiraphob@gmail.com>
Date: Sun, 31 Jan 2021 18:38:15 +0700
Subject: [PATCH] stdenv/generic: throw when using stdenv.lib and disallowing
 aliases

---
 pkgs/stdenv/generic/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/stdenv/generic/default.nix b/pkgs/stdenv/generic/default.nix
index 52d57a6dece..139c9212b58 100644
--- a/pkgs/stdenv/generic/default.nix
+++ b/pkgs/stdenv/generic/default.nix
@@ -153,11 +153,11 @@ let
       }) mkDerivation;
 
       # Slated for deprecation in 21.11
-      lib = builtins.trace
+      lib = if config.allowAlises then builtins.trace
         ( "Warning: `stdenv.lib` is deprecated and will be removed in the next release."
          + " Please use `pkgs.lib` instead."
          + " For more information see https://github.com/NixOS/nixpkgs/issues/108938")
-        lib;
+        lib else throw "`stdenv.lib` is a deprecated alias for `pkgs.lib`";
 
       inherit fetchurlBoot;