prooted-termux

#!/usr/bin/bash

jq=$(command -v jq)
proot=$(command -v proot)
qemu=$(command -v qemu-aarch64)

if [ ! $jq ] && [ ! $proot ] && [ ! $qemu ]; then pkg install proot jq qemu-user-aarch64 -y; fi
if [ ! $jq ]; then pkg install jq -y; fi
if [ ! $proot ]; then pkg install proot -y; fi
if [ ! $qemu ]; then pkg install qemu-user-aarch64 -y; fi 

jq=$(command -v jq)
proot=$(command -v proot)
qemu=$(command -v qemu-aarch64)

mkdir -p binds
folder=termux-fs/data/data/com.termux/files
if [ -d "$folder" ]; then
    first=1
    echo "skipping downloading"
fi
if [ "$first" != 1 ];then
    if [ ! -f "bootstrap.zip" ]; then
    	echo "Getting Download link from Github Release...."
    	download=`curl -L# https://api.github.com/repos/termux/termux-packages/releases | jq -r .[0].assets[0].browser_download_url`
        echo "Downloading bootstrap package"
        curl -L#o bootstrap.zip $download
    fi
    cur=`pwd`
    mkdir -p $folder/usr
    cd $folder/usr
    echo "Decompressing bootstrap image image"
    busybox unzip $cur/bootstrap.zip
    while read p; do
        echo "creating symlink for $p"
        ln -s ${p/←/ }
    done <SYMLINKS.txt
    rm SYMLINKS.txt
    for f in bin libexec lib/apt/methods;do
        echo "Making files in $f executable"
        chmod -R 700 $f/*
    done
    cd $cur
    mkdir -p $folder/home
    mkdir -p termux-fs/data/data/com.termux/cache/apt/archives/partials
fi
ff=/data/data/com.termux/files
bin=start.sh
echo "writing launch script"

cat > $bin <<- EOM
#!/usr/bin/bash
proot=$(command -v proot)
qemu=$(command -v qemu-aarch64)
basedir=\$(dirname \$0)

if [ ! $proot ]; then pkg install proot -y; fi
if [ ! $qemu ]; then pkg install qemu-user-aarch64 -y; fi

proot=$(command -v proot)
qemu=$(command -v qemu-aarch64)

#unset LD_PRELOAD in case termux-exec is installed. If termux-exec is also installed inside the jail it will set again.
unset LD_PRELOAD

command="proot"
command+=" -q \$qemu"
command+=" -r \$basedir/termux-fs"
command+=" -b /system"
command+=" -b /dev/"
command+=" -b /sys/"
command+=" -b /etc/"
command+=" -b /proc/"
command+=" -b /vendor"
command+=" -b /data/dalvik-cache/"
if [ -n "\$(ls -A \$basedir/binds)" ]; then
    for f in \$basedir/binds/* ;do
        . \$f
    done
fi
command+=" -w /data/data/com.termux/files/home/"
command+=" $ff/usr/bin/env -i"
command+=" HOME=$ff/home"
command+=" PATH=$ff/usr/bin:$ff/usr/bin/applets"
command+=" TERM=\$TERM"
command+=" ANDROID_DATA=/data"
command+=" ANDROID_ROOT=/system"
command+=" EXTERNAL_STORAGE=/sdcard"
command+=" LANG=\$LANG"
command+=" LD_LIBRARY_PATH=/data/data/com.termux/files/usr/lib"
command+=" PREFIX=/data/data/com.termux/files/usr"
command+=" TMPDIR=/data/data/com.termux/files/usr/tmp"
com="\$@"
if [ -z "\$com" ];then
    eval "exec \$command login"
else
    eval "exec \$command login -c '\$com'"
fi
EOM

echo "making $bin executable"
chmod +x $bin