From 705f2daa61b2cab2a3cb4885ac206bb775232af5 Mon Sep 17 00:00:00 2001
From: Jacob Oursland <jacob.oursland@gmail.com>
Date: Thu, 24 Jul 2025 15:32:12 -0700
Subject: [PATCH] CI: set minimum macOS SDK to 10.13.

---
 package/rattler-build/conda_build_config.yaml | 6 ++++--
 package/rattler-build/recipe.yaml             | 4 ++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/package/rattler-build/conda_build_config.yaml b/package/rattler-build/conda_build_config.yaml
index fbebc3758e..460cb041ef 100644
--- a/package/rattler-build/conda_build_config.yaml
+++ b/package/rattler-build/conda_build_config.yaml
@@ -3,5 +3,7 @@ c_compiler:               # [win]
 cxx_compiler:             # [win]
   - vs2022                # [win]
 
-MACOSX_DEPLOYMENT_TARGET: # [osx]
-  - '10.13'               # [osx]
+c_stdlib_version:         # [osx and x86_64]
+  - "10.13"               # [osx and x86_64]
+MACOSX_DEPLOYMENT_TARGET: # [osx and x86_64]
+  - "10.13"               # [osx and x86_64]
diff --git a/package/rattler-build/recipe.yaml b/package/rattler-build/recipe.yaml
index c16947201c..c2efc46e16 100644
--- a/package/rattler-build/recipe.yaml
+++ b/package/rattler-build/recipe.yaml
@@ -88,6 +88,10 @@ requirements:
         - xorg-x11-server-xvfb-cos7-aarch64
         - xorg-xproto
 
+    - if: osx and x86_64
+      then:
+        - ${{ stdlib('c') }}
+
     - if: build_platform != target_platform
       then:
         - cross-python_${{ target_platform }}