From e3ed0fc2e3835cc5c635fde2ed9c2bdaf9da3bef Mon Sep 17 00:00:00 2001
From: Vova Kot <volodymyr.kot.ua@gmail.com>
Date: Sat, 10 Oct 2026 17:35:11 +0000
Subject: [PATCH] fix: check for nix flake support before trying to load flake

---
 .envrc | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/.envrc b/.envrc
index 6a0e44f6e1876..86c6aee16f1c5 100644
--- a/.envrc
+++ b/.envrc
@@ -1,5 +1,14 @@
 source_up_if_exists
-if command -v nix >/dev/null 2>&1; then
-  use flake
+
+if has nix; then
+  if nix --extra-experimental-features "nix-command flakes" flake --help >/dev/null 2>&1; then
+    use flake
+  else
+    nix_description=$(
+      nix --version 2>/dev/null || printf "Nix with an unknown version"
+    )
+    log_status "WARNING: Detected $nix_description, which does not support flakes; skipping the flake-based development environment"
+  fi
 fi
+
 source_env_if_exists .envrc.local