$ luarocks install --server=https://luarocks.org/dev luatexbase
The LaTeX kernel (LaTeX2ε 2015/10/01 onward) builds in support for LuaTeX functionality, also available as ltluatex.tex for users of plain TeX and those with older LaTeX kernel implementations. This support is based on ideas taken from the original luatexbase package, but there are interface differences.
This ‘stub’ package provides a compatibility layer to allow existing packages to upgrade smoothly to the new support structure.