mercurial: Changelog

merge: short-circuit the _checkfs loop upon getting ENOENT This reduces the number of [lstat] calls when updating from rev(-1) to a rev with lots of files by a factor of several: for path foo/bar/baz/quux.txt without this patch we're lstatting: foo foo/bar foo/bar/baz foo/bar/baz/quux.txt and with this patch: foo foo/bar/baz/quux.txt

merge: don't pay for pathconflicts if there are none

pathauditor: no need to normcase the paths The only thing normed paths are used is the key of the caching sets, so the only change of behavior will be that the checks will be repeated for paths that differ by case. If anything, it seems correct for the check to be repeated, in case that actually affects semantics, but the main reasoning is simplifying the code and making it a bit faster. It looks like the code originally comes from commit [081e795c60e0]: it looks like that commit tried to get rid of the existing norming, but presumably did this overly cautiously, preserving it for the cache keys, even though it was pointless even then.

pathutil: slightly faster path audit in the common case

debug: add a config to abort update early This is useful to benchmark the parts of [hg update] that come before the parallel worker.

dirstate: add missing methods and kwargs to idirstate interface

dirstate: swap pathto() and get_entry() in idirstate This way the order of methods in dirstate and idirstate classes is the same. Just to make it easier to use diff tools to compare the two classes.

dirstate: update docstrings in idirstate from the current dirstate

setup: drop legacy osx compiler tuning to enable universal builds This was triggering deprecation warnings about migrating to `packaging.version` from `distutils` Version classes with `make local`. But rather than migrate that code, let's just get rid of some ~10-12 year old workarounds. As a bonus, the cext libraries that are built are now universal binaries containing x86_64 and arm64 images (at least when built on macOS 11.4 with Xcode 12.5 and the universal version of Python 3.9.13). Several things to note here: - Apple dropped support for 10.15 in Nov 2022, and OS X Lion that is referenced is 10.7 (unsupported since late 2014) - `xcode4` was basically always True because of the `>=` check (10.8 used Xcode 5, and I have Xcode 10.2 on 10.14) - `xcode51` was always False for modern-ish Xcode, because of the exact version string matching - Python 3.8 only supports OS X 10.9+; the Python 3.9.1+ universal installer is macOS 11+ only, and Python 3.10 drops the x86_64 installer to deliver only the universal installer. All of this is to say, the only thing lost by dropping this code on modern Xcode is that `os.environ['ARCHFLAGS'] = ''` is no longer set. But we probably shouldn't be setting that anymore, as shown by the universal libraries now being generated. I was able to `make local` and `python3 run-tests.py --local` with python 3.9.9, Xcode 10.2, and macOS 10.14.6, and didn't incur any more than the usual few test errors, so this should still work on some older versions of macOS.