I've found the issue when I tried to install

luarocks install suit

Error: /private/tmp/luarocks_luarocks-rockspec-suit-0.1-1-5083/suit-0.1-1.rockspec: Unknown field 1

This rockspec https://luarocks.org/manifests/vrld/suit-0.1-1.rockspec is not the same as in github repo

luarocks version: 2.3.0