$ luarocks install --server=http://luarocks.org/manifests/gui <name>

Modules

libcidr-ffi by GUI — downloads: 3,930
libcidr bindings for Lua
lua-resty-auto-ssl by GUI — downloads: 228,071
Automatic SSL handling for OpenResty
lua-resty-mail by GUI — downloads: 102
Email and SMTP library for OpenResty