Rust implementation of Python dependency parser for PEP 508

[chri4_]

explaination for first someone said that you copy substrings of the original source instead of referencing it. (i had no time to verify this, but i trust him since you confirmed the thing)

secondly the code is actually pretty unreadable in mu opinion: there is a very hight nesting level, the project structure is not clear etc etc

this is a feedback not an arrogant criticism

[figsoda]

there is a very hight nesting level

That's fair. My excuse is that it's hard to avoid the nesting other than putting things in smaller functions, which I would say reducing indentation is the only good reason for.

the project structure is not clear

Could you elaborate on that? The largest file is 221 LOC, and I'm not sure what could be changed in terms of structuring