From d24a440a410371e03ecaa3e69fa029fca3a8fd9c Mon Sep 17 00:00:00 2001
From: Stefan Frijters <sfrijters@gmail.com>
Date: Tue, 17 Feb 2026 13:53:27 +0100
Subject: [PATCH] chickenPackages_4.eggDerivation: move env variables into env

---
 pkgs/development/compilers/chicken/4/eggDerivation.nix | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/compilers/chicken/4/eggDerivation.nix b/pkgs/development/compilers/chicken/4/eggDerivation.nix
index 7e334782fe78..a4eb19b8a927 100644
--- a/pkgs/development/compilers/chicken/4/eggDerivation.nix
+++ b/pkgs/development/compilers/chicken/4/eggDerivation.nix
@@ -26,10 +26,13 @@ stdenv.mkDerivation (
     nativeBuildInputs = [ makeWrapper ];
     buildInputs = [ chicken ];
 
-    CSC_OPTIONS = lib.concatStringsSep " " cscOptions;
+    env = {
+      CSC_OPTIONS = lib.concatStringsSep " " cscOptions;
 
-    CHICKEN_REPOSITORY = libPath;
-    CHICKEN_INSTALL_PREFIX = "$out";
+      CHICKEN_REPOSITORY = libPath;
+      CHICKEN_INSTALL_PREFIX = "$out";
+    }
+    // (args.env or { });
 
     installPhase = ''
       runHook preInstall