Update to web3 v5

[njgheorghita]

What was wrong?

update to web3 v5 and remove eth-abi dependency

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🦔

[mikeshultz]

Would be pretty cool to get the web3[tester] splinter pulled out, or optional somehow. The web3[tester] splinter/extras don't look like they're required to run py-ethpm as a user. Not sure if this is the best way to go about it, but maybe something like this?

from setuptools.command.develop import develop as _develop
from subprocess import check_call

[...]

class develop(_develop):
    """ Post-installation to make sure web3 tester extras are installed."""
    def run(self):
        _develop.run(self)
        check_call(['pip', 'install', 'web3[tester]>=5.0.0a2,<6.0.0'])

setup(
    [...]
    install_requires=[
        [...]
        'web3>=5.0.0a2,<6.0.0',
    ],
    [...]
    cmdclass={
        'develop': develop,
    },
)

[pipermerriam]

Is this a testing dependency?

[njgheorghita]

@pipermerriam The [tester] splinter is a testing dependency, but web3 by itself is needed for a user to use py-ethpm.

I tried moving web3[tester]>=5.0.0a3,<6.0.0 to the test section of extras_require and leaving web3>=5.0.0a3,<6.0.0 in the install_requires section, in the hopes that the [tester] splinter would only be installed with [test] or [dev]. But this failed to install eth_tester when running pip install -e .[dev].

Is there a better way to handle only installing the [tester] splinter in a the extras_require[test] env, but the same web3 version without the [tester] splinter in install_requires?

[njgheorghita]

@mikeshultz Noted - created issue #140 to track, but moving ahead to merge this