From e7c76d3c25883139f4c86b2afb181868b074ded7 Mon Sep 17 00:00:00 2001
From: Nikolay Amiantov <ab@fmap.me>
Date: Wed, 12 Apr 2017 18:12:16 +0300
Subject: [PATCH] makeWrapper: search for free unwrapped file name

---
 pkgs/build-support/setup-hooks/make-wrapper.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/build-support/setup-hooks/make-wrapper.sh b/pkgs/build-support/setup-hooks/make-wrapper.sh
index 96e50773138..eebde886a88 100644
--- a/pkgs/build-support/setup-hooks/make-wrapper.sh
+++ b/pkgs/build-support/setup-hooks/make-wrapper.sh
@@ -132,6 +132,9 @@ wrapProgram() {
     local prog="$1"
     local hidden
     hidden="$(dirname "$prog")/.$(basename "$prog")"-wrapped
+    while [ -e "$hidden" ]; do
+      hidden="${hidden}_"
+    done
     mv "$prog" "$hidden"
     # Silence warning about unexpanded $0:
     # shellcheck disable=SC2016