From 7f22a40e3b515d0a99233a1eb36ef8191628629f Mon Sep 17 00:00:00 2001
From: Bernardo Meurer Costa <beme@anthropic.com>
Date: Fri, 3 Oct 2025 15:58:47 +0000
Subject: [PATCH] build(libstore): assert withAWS xor withCurlS3

---
 src/libstore/package.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libstore/package.nix b/src/libstore/package.nix
index 1c08e466e..0eb8e3687 100644
--- a/src/libstore/package.nix
+++ b/src/libstore/package.nix
@@ -34,6 +34,9 @@ let
   inherit (lib) fileset;
 in
 
+assert lib.assertMsg (!withAWS || !withCurlS3)
+  "withAWS and withCurlS3 are mutually exclusive - cannot enable both S3 implementations simultaneously";
+
 mkMesonLibrary (finalAttrs: {
   pname = "nix-store";
   inherit version;