From 18da552952b1ecb832bc914e7500a4ed18874995 Mon Sep 17 00:00:00 2001
From: Robert Hensing <robert@roberthensing.nl>
Date: Thu, 23 Oct 2025 19:42:05 +0200
Subject: [PATCH] fix: Pre-enable ca-derivations in tests

This way we don't run into any race conditions when individual tests
enable the feature.
Specifically this affects the initialization of our default store for
testing.
The test suite *should* not be all that sensitive to the environment,
but that's some future work to make sure.
---
 rust/nci.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/rust/nci.nix b/rust/nci.nix
index fabe122..1509336 100644
--- a/rust/nci.nix
+++ b/rust/nci.nix
@@ -56,6 +56,10 @@
 
               echo "Configuring relocated store at $NIX_REMOTE..."
 
+              # Create nix.conf with experimental features enabled
+              mkdir -p "$NIX_CONF_DIR"
+              echo "experimental-features = ca-derivations flakes" > "$NIX_CONF_DIR/nix.conf"
+
               # Init ahead of time, because concurrent initialization is flaky
               ${
                 # Not using nativeBuildInputs because this should (hopefully) be