From 991edaace57d50d571f4f4658ef2d52b94a07f2c Mon Sep 17 00:00:00 2001
From: James Ottaway <jamesottaway@users.noreply.github.com>
Date: Fri, 29 Jan 2021 13:55:18 +1000
Subject: [PATCH] Shorten `mktemp` flag for macOS

Address `mktemp: illegal option -- -`.
---
 src/nix/develop.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/nix/develop.cc b/src/nix/develop.cc
index 578258394..3c44fdb0e 100644
--- a/src/nix/develop.cc
+++ b/src/nix/develop.cc
@@ -239,7 +239,7 @@ struct Common : InstallableCommand, MixProfile
 
         out << buildEnvironment.bashFunctions << "\n";
 
-        out << "export NIX_BUILD_TOP=\"$(mktemp -d --tmpdir nix-shell.XXXXXX)\"\n";
+        out << "export NIX_BUILD_TOP=\"$(mktemp -d -t nix-shell.XXXXXX)\"\n";
         for (auto & i : {"TMP", "TMPDIR", "TEMP", "TEMPDIR"})
             out << fmt("export %s=\"$NIX_BUILD_TOP\"\n", i);