From a3ff75fd7efa1d0829ee7fd825636be9980da4bf Mon Sep 17 00:00:00 2001
From: Robert Hensing <robert@roberthensing.nl>
Date: Thu, 18 Apr 2024 23:45:00 +0200
Subject: [PATCH] devShells: null out src to avoid nix develop rebuild

Whenever src changed, nix develop would internally create a fresh
derivation, which it has to try and substitute and then build.
Let's not do that.
---
 flake.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/flake.nix b/flake.nix
index 5352aced9..d9b0c63b5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -441,6 +441,9 @@
             XDG_DATA_DIRS+=:$out/share
           '';
 
+          # We use this shell with the local checkout, not unpackPhase.
+          src = null;
+
           env = {
             # For `make format`, to work without installing pre-commit
             _NIX_PRE_COMMIT_HOOKS_CONFIG =