From 29c15f3f707085456b06ff88ded2bdf8def609d4 Mon Sep 17 00:00:00 2001
From: Roland Conybeare <rconybeare@gmail.com>
Date: Sat, 28 Feb 2026 13:28:08 +1100
Subject: [PATCH] nix nit: reset TMPDIR/TMP in shell4-osx for long-running
 emacs

---
 default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/default.nix b/default.nix
index 77c8f1e1..59a80c66 100644
--- a/default.nix
+++ b/default.nix
@@ -783,6 +783,10 @@ in
 
       # dependencies on host system libraries
       # glpath = pkgs.lib.makeLibraryPath [ ];
+
+      # choose a temp directory that can outlive nix-shell
+      export TMPDIR=$(getconf DARWIN_USER_TEMP_DIR)
+      export TMP=$TMPDIR
       '';
         };