[PR PATCH] common/travis: make check-install use new rootdir.

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

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

https://github.com/mhmdanas/void-packages ci-install-to-new-rootdir
https://github.com/void-linux/void-packages/pull/43304

common/travis: make check-install use new rootdir.
The CI has `base-chroot` installed, but sometimes this script would try to install `base-system,` causing conflicts. This PR fixes that issue by using a brand-new rootdir.

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#### Testing the changes
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A patch file from https://github.com/void-linux/void-packages/pull/43304.patch is attached

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From ea99d9d518ec2c8ec08a11eacc59b792e5cb177c Mon Sep 17 00:00:00 2001
From: mhmdanas <triallax@tutanota.com>
Date: Thu, 6 Apr 2023 19:06:26 +0100
Subject: [PATCH] common/travis: make check-install use new rootdir.

The CI has `base-chroot` installed, but sometimes this script would try
to install `base-system,` causing conflicts. This commit fixes that
issue by using a brand-new rootdir.
---
 common/travis/check-install.sh | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/common/travis/check-install.sh b/common/travis/check-install.sh
index 943a6bc6211c..5ecea84e640b 100755
--- a/common/travis/check-install.sh
+++ b/common/travis/check-install.sh
@@ -4,22 +4,19 @@
 
 export XBPS_TARGET_ARCH="$2" XBPS_DISTDIR=/hostrepo
 
-if [ "$1" != "$XBPS_TARGET_ARCH" ]; then
-	triplet="$(/hostrepo/xbps-src -a "$XBPS_TARGET_ARCH" show-var XBPS_CROSS_TRIPLET)"
-	ROOTDIR="-r /usr/$triplet"
-fi
-
 ADDREPO="--repository=$HOME/hostdir/binpkgs/bootstrap
  --repository=$HOME/hostdir/binpkgs
  --repository=$HOME/hostdir/binpkgs/nonfree"
 
+mkdir /check-install
+
 while read -r pkg; do
 	for subpkg in $(xsubpkg $pkg); do
 		/bin/echo -e "\x1b[32mTrying to install dependants of $subpkg:\x1b[0m"
 		for dep in $(xbps-query $ADDREPO -RX "$subpkg"); do
 			xbps-install \
-				$ROOTDIR $ADDREPO \
-				-Sny \
+				$ADDREPO \
+				-Sny -r /check-install \
 				"$subpkg" "$(xbps-uhelper getpkgname "$dep")"
 			ret="$?"
 			if [ "$ret" -eq 8 ] || [ "$ret" -eq 11 ]; then