From ad625dd17211a42d6e19513e61bdf1382bb89602 Mon Sep 17 00:00:00 2001
From: Emily <vcs@emily.moe>
Date: Thu, 7 Nov 2024 17:56:32 +0000
Subject: [PATCH] stdenv/darwin: fix SDK overlays for macOS SDK < 11

Quite impressive that this worked up until now.

Co-authored-by: Lily Foster <lily@lily.flowers>
---
 pkgs/stdenv/darwin/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/stdenv/darwin/default.nix b/pkgs/stdenv/darwin/default.nix
index 35ad94c41633..6f8ffaec92f1 100644
--- a/pkgs/stdenv/darwin/default.nix
+++ b/pkgs/stdenv/darwin/default.nix
@@ -1273,7 +1273,8 @@ assert bootstrapTools.passthru.isFromBootstrapFiles or false; # sanity check
                 patch
                 ;
 
-              "apple-sdk_${sdkMajorVersion}" = self.apple-sdk;
+              # TODO: Simplify when dropping support for macOS < 11.
+              "apple-sdk_${builtins.replaceStrings [ "." ] [ "_" ] sdkMajorVersion}" = self.apple-sdk;
 
               darwin = super.darwin.overrideScope (
                 _: _: