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| Nobody is actively working on this - AugieFackler works on it sporadically, and would be happy to see patches on this topic flagged with Py3 on the mailing list. The work in progress is visible at http://hg.durin42.com/hg-py3k/ - note that ChangesetEvolution is in use on that repository, and so hashes will change over time as the patchset is rebased. | GregorySzorc, AugieFackler, YuyaNishihara and PulkitGoyal are some of those who are responsible for the work done until now. PulkitGoyal was selected as GSoC student to do the porting work with MartijnPieters as his mentor. |
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| * Get the entire codebase working with 'from future import absolute_import' * This requires fixing some cyclic imports. See [[https://selenic.com/repo/hg/file/default/tests/test-check-module-imports.t|test-check-module-imports.t]] for currently whitelisted cyclic imports. |
* Get the entire codebase working with 'from future import absolute_import' (Exceptions Left) * This requires fixing some cyclic imports. See [[https://selenic.com/repo/hg/file/default/tests/test-check-module-imports.t|test-check-module-imports.t]] for currently whitelisted cyclic imports. (./) |
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| * Remove 2to3 and have the source be 2.6/2.7/3.5 compatible * Conditionalize imports for renamed modules |
* Remove 2to3 and have the source be 2.6/2.7/3.5 compatible (./) * Conditionalize imports for renamed modules (./) |
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| * Start adding b'' and u'' everywhere and using 'from future import unicode_literals' | * The codebase uses a source transformer which converts every string to bytes and few other hacks which are required to port. There are places where unicode is required in both Python 2 and 3, there are places where unicode is required in Python 3, and bytes in Python 2. So these things are to be fixed. |
Note:
This page is primarily intended for developers of Mercurial.
Python 3
To see a summary of our current position on Python 3 support, see SupportedPythonVersions#Python_3.x_support.
This is a status page for keeping track of what needs to be done to make progress on Mercurial on Python 3.
GregorySzorc, AugieFackler, YuyaNishihara and PulkitGoyal are some of those who are responsible for the work done until now. PulkitGoyal was selected as GSoC student to do the porting work with MartijnPieters as his mentor.
1. What Works
run-tests.py can pass its own tests (test-run-tests.py and test-run-tests.t) under 2.6, 2.7 and 3.5.
2. Next Steps
Eliminate all Python 3 compatibility warnings from test-check-py3-compat.t
- Get the entire codebase working with 'from future import absolute_import' (Exceptions Left)
This requires fixing some cyclic imports. See test-check-module-imports.t for currently whitelisted cyclic imports.
- Make existing modules at least parse with Python 3 (still some Python 2.x syntax)
Remove 2to3 and have the source be 2.6/2.7/3.5 compatible
Conditionalize imports for renamed modules
- Get the C extensions compiling correctly in Python 3
- The codebase uses a source transformer which converts every string to bytes and few other hacks which are required to port. There are places where unicode is required in both Python 2 and 3, there are places where unicode is required in Python 3, and bytes in Python 2. So these things are to be fixed.