I have no clue how to integrate programms running onchain, …

I have no clue how to integrate programms running onchain, but what i ask myself is if you could upload your program in small transactions onchain by linking single files with their hashes just like you do "from [Integration] import [function]"
Example:
from [Block] use [transaction hash] as [function name]
Means you can take the whole context of the file and handle it as a whole function. Is this already a thing? @Sunnie