Alternative to vyper install as a library

[antazoey]

Overview

having vyper installed as a library causes problems in environments where you need a different version than the one we are using.

Specification

two choices:

1. make vyper an extra and the flattener a more conditional feature
2. copy in the functionality from vyper as a lib and ship it with ape-vyper to bypass all problems altogether (bit of a SPIKE)

Dependencies

Include links to any open issues that must be resolved before this feature can be implemented.

[linear]

APE-1762 Alternative to vyper install as a library

[antazoey]

I tried number 2 and it was not really possible without literally copying all of vyper into Ape just about, it got really messy
so im thinking number 1 is the way