build time increased a lot

[yunstanford]

https://travis-ci.org/huge-success/sanic/builds
looks like build time increased a lot, after merging #1562

cc: @huge-success/sanic-core-devs @ahopkins

[ketan86]

@yunstanford Agree, almost three times the previous build of #1562. This needs some investigation if build time increase like this is not expected.

[ahopkins]

This is indeed bizarre. The difference in the build is that we are replacing aiohttp for requests_async. The only other change that impacted the build was renaming pyproject.toml since we are only using it for building black right now and not as in relation to PEP 518.

The reason I did that was because the builds started conflicting with the toml file:

ERROR: Error installing 'file:///home/travis/build/huge-success/sanic': editable mode is not supported for pyproject.toml-style projects. pip is processing this project as pyproject.toml-style because it has a pyproject.toml file. Since the project has a setup.py and the pyproject.toml has no "build-backend" key for the "build_system" value, you may pass --no-use-pep517 to opt out of pyproject.toml-style processing. See PEP 517 for details on pyproject.toml-style projects.

[ahopkins]

Just read @yunstanford PR linked above to httpcore (a dependency of requests-async, and potentially a new dependency of requests as well)