[PR PATCH] common/00-libdir: only create lib{32,64} symlink if not exists

[sgn <sgn@users.noreply.github.com>]

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There is a new pull request by sgn against master on the void-packages repository

https://github.com/sgn/void-packages pre-install-libdir
https://github.com/void-linux/void-packages/pull/28582

common/00-libdir: only create lib{32,64} symlink if not exists
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#### General
- [ ] This is a new package and it conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements)

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- [ ] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [ ] I generally don't use the affected packages but briefly tested this PR

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A patch file from https://github.com/void-linux/void-packages/pull/28582.patch is attached

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From c8fa6860168b46d1b54451bd876eb21573abd3f4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C4=90o=C3=A0n=20Tr=E1=BA=A7n=20C=C3=B4ng=20Danh?=
 <congdanhqx@gmail.com>
Date: Mon, 8 Feb 2021 06:47:45 +0700
Subject: [PATCH] common/00-libdir: only create lib{32,64} symlink if not
 exists

---
 common/hooks/pre-install/00-libdir.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/common/hooks/pre-install/00-libdir.sh b/common/hooks/pre-install/00-libdir.sh
index f19f68088ff..4c57fbcb1e0 100644
--- a/common/hooks/pre-install/00-libdir.sh
+++ b/common/hooks/pre-install/00-libdir.sh
@@ -1,7 +1,9 @@
 # This hook creates the wordsize specific libdir symlink.
 
 hook() {
-	if [ "${pkgname}" != "base-files" ]; then
+	if [ -L ${PKGDESTDIR}/usr/lib${XBPS_TARGET_WORDSIZE} ]; then
+		return 0
+	elif [ "${pkgname}" != "base-files" ]; then
 		vmkdir usr/lib
 		ln -sf lib ${PKGDESTDIR}/usr/lib${XBPS_TARGET_WORDSIZE}
 	fi