Build Luvit for aarch64

#!/bin/sh
set -eu
LUVI_VERSION=${LUVI_VERSION:-2.12.0}
LIT_VERSION=${LIT_VERSION:-3.8.5}
LUVI_ARCH=`uname -s`_`uname -m`
RUN_PATH=$PWD

LUVI_URL="https://github.com/luvit/luvi/releases/download/v$LUVI_VERSION/luvi-regular-$LUVI_ARCH"
LIT_URL="https://lit.luvit.io/packages/luvit/lit/v$LIT_VERSION.zip"

# Get luvi
if [ "$LUVI_ARCH" != "Linux_aarch64" ]; then
    echo "Downloading $LUVI_URL to luvi"
    curl -L -f -o luvi $LUVI_URL
    chmod +x luvi
else
    echo "Downloading luvi repo and build"
    git clone --recursive https://github.com/luvit/luvi.git
    mv luvi $RUN_PATH/luvi_source
    cd luvi_source
    make regular
    make
    mv $PWD/build/luvi $RUN_PATH/luvi
    cd $RUN_PATH
fi

# Get lit
echo "Downloading $LIT_URL to lit.zip"
curl -L -f -o lit.zip $LIT_URL

# Create lit using lit
./luvi lit.zip -- make lit.zip lit luvi

# Create luvit using lit
./lit make lit://luvit/luvit luvit luvi

# Cleanup
rm -f lit.zip
rm -rf $RUN_PATH/luvi_source