From 992b88b87d17c6bd801d76159f4bdb0ec80d1d9b Mon Sep 17 00:00:00 2001
From: Bryan Bennett <Bryan.Bennett@proton.me>
Date: Fri, 31 May 2024 07:59:12 -0400
Subject: [PATCH] Set IN_NIX_SHELL explicitly in use_nix

---
 direnvrc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/direnvrc b/direnvrc
index 5bfeb85..f7282a2 100644
--- a/direnvrc
+++ b/direnvrc
@@ -467,6 +467,11 @@ use_nix() {
         fi
       fi
 
+      # Some builtin nix tooling depends on this variable being set BEFORE their invocation to change their behavior
+      # (notably haskellPackages.developPackage returns an env if this is set)
+      # This allows us to more closely mimic nix-shell.
+      export IN_NIX_SHELL="impure"
+
       if tmp_profile_rc=$(_nix \
         print-dev-env \
         --profile "$tmp_profile" \