Stop using Python 2 in 0 A.D.

[Guido Falsi]

This is a general ticket for the "Python 2 EOL" release blocker.

Tasks:

• Upgrade translation scripts: ​Phab:D2757, ex #3857
• Upgrade SM to ESR 78, Phab: #4893, #5859, #5860, #5861
• CXXTest should ​not use #!/usr/bin/env python as shebang.
• Other scripts: ​Phab:D2501

Distributions now expect python2 or python3.

[asterix]

Hi, thank you for the heads up some of us are already aware of this. There is already work going in that direction such as ​https://code.wildfiregames.com/D506 and ​https://code.wildfiregames.com/D2501 (the previous commit that introduced previous version is this ​https://code.wildfiregames.com/rP9417 but please keep in mind that spidermonkey version will still be upgraded as seen here ​https://trac.wildfiregames.com/changeset/22627 ​https://trac.wildfiregames.com/ticket/4893

[Ludovic Rousseau]

For the same reason 0ad is (will be in 10 hours) removed from Debian testing.

See ​https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=967118

[Stan]

Thanks for letting us know. Sorry about the delay.

[wraitii]

(Hijacking this ticket as the main Python3 ticket).

[chris]

Removed from gentoo too :

- games-strategy/0ad-0.0.23b_alpha::gentoo (masked by: package.mask)
/usr/portage/profiles/package.mask:
# MichaŠGórny <mgorny@gentoo.org> (2020-09-09)
# These packages (or package versions) still require Python 2.7.
# They are either dead upstream, their Python 3 porting efforts are
# not progressing or their maintainers are simply unresponsive.
# Please do not remove any packages from this list unless you actually
# port them to Python 3.
# Removal in 30 days.  Please find relevant bugs on tracker bug #694800.

[Stan]

Thanks for the report :(

[wraitii]

In 24282:

Fix MacOs bundle for Python3

Update the lib used to handle plists, as dmgbuild changed things for Python3.

Refs #5694

Differential Revision: ​https://code.wildfiregames.com/D3157

[wraitii]

In 24313:

Update i18n scripts to run on Python3

The pology library runs on Python2 and development appears stalled. It is also not available on pip.
The babel library, BSD-licensed, provides, amongst many other things, a replacement for .POT / .PO manipulation.

The poediff tool that we used to detect spurious i18n change is replaced with a Python script that does a simpler but good enough job (it is also much, much faster).

These replacements let the i18n scripts run on Python3 entirely.

Makes D506 redundant.

Comments by: Itms

Reviewed By: Gallaecio

Refs #5694

Differential Revision: ​https://code.wildfiregames.com/D2757

[wraitii]

In 24332:

[SM78 1/2] Upgrade Spidermonkey build system and binaries to 78.6.0

SM78 drops usage of Python 2 in favour of Python 3.

SM78 is the first ESR to actually use rust, which means a new static library is bundled.
This means LLVM-objdump is now a dependency of Spidermonkey, and also 0 A.D.

SM78 also removes the need for NSPR on Windows (Bug 1556646).

Tested by: Stan, Freagarach, mammadori

Refs #5694
Refs #5861

Differential Revision: ​https://code.wildfiregames.com/D3167

[wraitii]

No longer a release blocker after ​Phab:rP24376 upgraded cxxtest.

[wraitii]

Rest of the ticket is pushed back.

[Itms]

In 24892:

Port remaining python2 helper scripts to python3, fixes #5694.

Differential Revision: ​https://code.wildfiregames.com/D2501