Luarocks as self-contained

self-luarocks.sh

#!/usr/bin/env bash

# This script installs luarocks as self-contained inside .luarocks of current dir

THIS_DIR=$(cd $(dirname $0); pwd)

git clone https://github.com/keplerproject/luarocks.git
cd luarocks
git checkout tags/v2.2.1 # Current stable

PREFIX="$THIS_DIR/.luarocks"
./configure --prefix=$PREFIX --sysconfdir=$PREFIX/luarocks --force-config
RET=$?; if [ $RET -ne 0 ]; then echo "Error. Exiting."; exit $RET; fi
make build && make install
RET=$?; if [ $RET -ne 0 ]; then echo "Error. Exiting."; exit $RET; fi

cd ..
rm -rf luarocks

# IMPORTANT!
export LUA_CPATH=";;${PREFIX}/lib/lua/5.2/?.so"
export LUA_PATH=";;${PREFIX}/share/lua/5.2/?.lua;${PREFIX}/share/lua/5.2/?/init.lua"

# Maybe you want:
# echo "export LUA_CPATH=\"$LUA_CPATH\"" >> ~/.bashrc
# echo "export LUA_PATH=\"$LUA_PATH\"" >> ~/.bashrc
# echo "export PATH=$PREFIX/bin:${PATH}"  >> ~/.bashrc

# Now you can ./.luarocks/bin/luarocks whatever
# Or luarocks whatever