From cdbb73aa55fc12c783606aebf55b19427ad23a3e Mon Sep 17 00:00:00 2001
From: Austin Ziegler <austin@zieglers.ca>
Date: Mon, 23 Oct 2023 10:07:34 -0400
Subject: [PATCH] Prevent direnv errors when not using nix (#16875)

Right now, if a developer uses `direnv` but does not use `nix`, an error
is reported whenever changing into the OpenAPI generator directory:

```console
$ cd ~/oss/forks/openapi-generator
direnv: loading ~/oss/forks/openapi-generator/.envrc
direnv: using flake
environment:1270: nix: command not found
```

This uses the `has()` function to check for `nix` to *conditionally* run
the `use_flake` function.
---
 .envrc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.envrc b/.envrc
index 3550a30f2de..b85b26d148b 100644
--- a/.envrc
+++ b/.envrc
@@ -1 +1 @@
-use flake
+has nix && use flake