From f9094faf70fe5be3973bc8aa7d77d76d0acbe066 Mon Sep 17 00:00:00 2001
From: binarycat <binarycat@envs.net>
Date: Mon, 18 Mar 2024 20:54:31 -0400
Subject: [PATCH] stdenv: pass --mode=+w to tar, ensuring extraction is
 possible

fixes #191137
---
 pkgs/stdenv/generic/setup.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index 9c918b12f96e..6c72395219f7 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -1069,12 +1069,12 @@ _defaultUnpack() {
                 # disregard the error code from the xz invocation. Otherwise,
                 # it can happen that tar exits earlier, causing xz to fail
                 # from a SIGPIPE.
-                (XZ_OPT="--threads=$NIX_BUILD_CORES" xz -d < "$fn"; true) | tar xf - --warning=no-timestamp
+                (XZ_OPT="--threads=$NIX_BUILD_CORES" xz -d < "$fn"; true) | tar xf - --mode=+w --warning=no-timestamp
                 ;;
             *.tar | *.tar.* | *.tgz | *.tbz2 | *.tbz)
                 # GNU tar can automatically select the decompression method
                 # (info "(tar) gzip").
-                tar xf "$fn" --warning=no-timestamp
+                tar xf "$fn" --mode=+w --warning=no-timestamp
                 ;;
             *)
                 return 1