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dirstate: remove the python-side whitelist of allowed matchers...
dirstate: remove the python-side whitelist of allowed matchers This whitelist is too permissive because it allows matchers that contain disallowed ones deep inside, for example through `intersectionmatcher`. It is also too restrictive because it doesn't pass through some of the matchers we support, such as `patternmatcher`. It's also unnecessary because unsupported matchers raise `FallbackError` and we fall back anyway. Making this change makes more of the tests use rust code path, and therefore subtly change behavior. For example, rust status in largefiles repos seems to have strange behavior.
Arseniy Alekseyev -
r52904:865efc02 tip default
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Oxidized Mercurial

This project provides a Rust implementation of the Mercurial (hg)
version control tool.

Under the hood, the project uses
PyOxidizer to embed a Python
interpreter in a binary built with Rust. At run-time, the Rust fn main()
is called and Rust code handles initial process startup. An in-process
Python interpreter is started (if needed) to provide additional
functionality.

Building

First, acquire and build a copy of PyOxidizer; you probably want to do this in
some directory outside of your clone of Mercurial:

$ git clone https://github.com/indygreg/PyOxidizer.git
$ cd PyOxidizer
$ cargo build --release

Then build this Rust project using the built pyoxidizer executable:

$ /path/to/pyoxidizer/target/release/pyoxidizer build --release

If all goes according to plan, there should be an assembled application
under build/<arch>/release/app/ with an hg executable:

$ build/x86_64-unknown-linux-gnu/release/app/hg version
Mercurial Distributed SCM (version 5.3.1+433-f99cd77d53dc+20200331)
(see https://mercurial-scm.org for more information)

Copyright (C) 2005-2020 Olivia Mackall and others
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Running Tests

To run tests with a built hg executable, you can use the --with-hg
argument to run-tests.py. But there's a wrinkle: many tests run custom
Python scripts that need to import modules provided by Mercurial. Since
these modules are embedded in the produced hg executable, a regular
Python interpreter can't access them! To work around this, set PYTHONPATH
to the Mercurial source directory. e.g.:

$ cd /path/to/hg/src/tests
$ PYTHONPATH=`pwd`/.. python3.9 run-tests.py \
    --with-hg `pwd`/../rust/hgcli/build/x86_64-unknown-linux-gnu/release/app/hg