Looking for a Lua alternative

[solidstate1991]

After losing a battle with trying to get Lua 5.4 working on my 
own end, with problems I previously solved kept reappearing, and 
other problems just were unable to fix for no good reason, I've 
decided to drop it from my own game engine in favor of some 
replacement.

I need a lightweight scripting language with integer support that 
is either easy to interface with D (preferrably as a DLL/SO file, 
so I don't have to deal with godawful C/C++ build systems), or at 
least would be easy to port within a few weeks. Most scripting 
languages nowadays are de-facto application languages for people 
that are scared of compilers and type systems, thus are coming 
with 25-50MB worth of standard libraries, which I obviously would 
like to avoid packing with my way smaller game engine. At the 
very worst, I'll try to port pocketpy or something like that to D 
or make it a DLL file.