[Debian] Replace Python 2 packages by their Python 3 counterparts and remove doubled "automake"

[MichaIng]

Description

The aim is simply to skip installing Python 2 on Debian where only Python 3 is required. (Removal of the doubled automake package from dependency list is trivial. 😉)

• python3-setuptools: https://packages.debian.org/stretch/python3-setuptools
• python3-gi: https://packages.debian.org/stretch/python3-gi

The second one is not the -dev package. There is non available for Python 3 only, instead for both: https://packages.debian.org/stretch/python-gi-dev
However I tested with the above two on x86 and didn't notice any compilation (including Mimic) or related run error with Mycroft. However clearly needs additional testing on e.g. ARM devices in case, or knowledge of the devs who know where/how the GObject libs/headers are actually used.

So take this PR for now as an idea to think about skipping the install of Python 2 on Debian.

How to test

Install on Debian on different CPU architectures, where compilation might have different needs compared to x86.

Contributor license agreement signed?

• CLA (Whether you have signed a CLA - Contributor Licensing Agreement

[devs-mycroft]

Hello, @MichaIng, thank you for helping with the Mycroft project! We welcome everyone
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for Everyone.

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[forslund]

Thanks for this, will merge as soon as the CLA gets in.

I don't think python3-gi is actually needed for core either and we should be able to remove that requirement all together.

[MichaIng]

@forslund

Thanks for this, will merge as soon as the CLA gets in.

I filled the form already but didn't receive a confirmation email yet. This takes a while?

I don't think python3-gi is actually needed for core either and we should be able to remove that requirement all together.

Would be even better. Shall I remove it completely (on all distros) with this PR? Even as is, the PR should be tested on other architectures before merging, so then dependency on GObject could be tested all together.

[forslund]

There's some amount of manual labor involved in getting the CLA mails sent out so you should have the mail soon-ish. If it doesn't arrive in a day or two, check spam then yell at me and I'll look into it.

Just change it for debian/ubuntu and then we can create help-wanted issues for the other OS'es so it can be tested properly. (I currently only run Debian derivatives)

[MichaIng]

@forslund
Makes sense, same here with Debian-only distros running.

[MichaIng]

Resolved conflict with new info print when pre-reqs are installed.

[forslund]

CLA has arrived. Going to spin up a new Ubuntu VM and try this fresh! Thanks for contributing!

[forslund]

Tested and looks good! Merging!