setup: ignore message about disabling 3rd party extensions because of version I started getting into a bind recently when switching between py2 and py3 because switching requires a `make clean`, which kills __version__.py. But then when running `make local`, it picks up the local hg.exe (MSYS seems to prefix $PATH with '.'), which doesn't know its version. That causes it to emit a warning about needing at least 4.3 to load evolve, which caused setup.py to fail saying there is no working hg executable to figure out the version. If we can ignore general extension import failures, we should be able to ignore this too.

narrow: avoid overwriting a variable I don't like to overwrite variables, especially not with a different type (because it makes it harder to explain what the variable is for, and, therefore, to name it well). Differential Revision: https://phab.mercurial-scm.org/D4846

treemanifests: remove _loadalllazy in _diff() The benchmarks below use a similar setup as in ee7ee0c516ca and my other recent commits. Yes, in some cases this runs in literally 5% of the time it previously took. before = a6f8ab53 diff --git: repo | N | T | before (mean +- stdev) | after (mean +- stdev) | % of before ------+---+---+------------------------+-----------------------+------------ m-u | | | 1.301 s +- 0.004 s | 1.309 s +- 0.012 s | 100.6% m-u | | x | 1.303 s +- 0.009 s | 1.302 s +- 0.006 s | 99.9% m-u | x | | 1.308 s +- 0.006 s | 1.309 s +- 0.007 s | 100.1% m-u | x | x | 85.7 ms +- 0.6 ms | 86.0 ms +- 0.3 ms | 100.4% l-d-r | | | 197.5 ms +- 0.7 ms | 197.8 ms +- 2.2 ms | 100.2% l-d-r | | x | 199.4 ms +- 0.6 ms | 199.3 ms +- 0.9 ms | 99.9% l-d-r | x | | 86.1 ms +- 0.5 ms | 85.8 ms +- 0.9 ms | 99.7% l-d-r | x | x | 64.4 ms +- 0.4 ms | 64.4 ms +- 0.3 ms | 100.0% diff -c . --git: repo | N | T | before (mean +- stdev) | after (mean +- stdev) | % of before ------+---+---+------------------------+-----------------------+------------ m-u | | | 236.7 ms +- 1.1 ms | 236.5 ms +- 1.3 ms | 99.9% m-u | | x | 158.7 ms +- 1.0 ms | 128.0 ms +- 1.0 ms | 80.7% <-- m-u | x | | 239.7 ms +- 1.8 ms | 238.1 ms +- 1.5 ms | 99.3% m-u | x | x | 132.4 ms +- 0.9 ms | 132.3 ms +- 0.6 ms | 99.9% l-d-r | | | 81.8 ms +- 0.4 ms | 81.8 ms +- 0.3 ms | 100.0% l-d-r | | x | 3.894 s +- 0.017 s | 193.6 ms +- 0.4 ms | 5.0% <-- l-d-r | x | | 106.9 ms +- 0.4 ms | 106.6 ms +- 0.3 ms | 99.7% l-d-r | x | x | 182.7 ms +- 0.8 ms | 183.3 ms +- 0.9 ms | 100.3% rebase -r . --keep -d .^^: repo | N | T | before (mean +- stdev) | after (mean +- stdev) | % of before ------+---+---+------------------------+-----------------------+------------ m-u | | | 5.615 s +- 0.109 s | 5.562 s +- 0.015 s | 99.1% m-u | | x | 5.701 s +- 0.027 s | 5.715 s +- 0.023 s | 100.2% m-u | x | | 5.572 s +- 0.128 s | 5.613 s +- 0.182 s | 100.7% m-u | x | x | 633.3 ms +- 28.7 ms | 636.2 ms +- 13.8 ms | 100.5% l-d-r | | | 666.4 ms +- 17.0 ms | 658.5 ms +- 9.3 ms | 98.8% l-d-r | | x | 6.520 s +- 0.070 s | 6.505 s +- 0.026 s | 99.8% l-d-r | x | | 279.0 ms +- 13.0 ms | 276.5 ms +- 4.7 ms | 99.1% l-d-r | x | x | 1.636 s +- 0.058 s | 1.657 s +- 0.014 s | 101.3% status --change . --copies: repo | N | T | before (mean +- stdev) | after (mean +- stdev) | % of before ------+---+---+------------------------+-----------------------+------------ m-u | | | 218.6 ms +- 1.4 ms | 217.9 ms +- 1.5 ms | 99.7% m-u | | x | 138.5 ms +- 0.4 ms | 108.4 ms +- 0.2 ms | 78.3% <-- m-u | x | | 220.1 ms +- 1.3 ms | 219.7 ms +- 1.5 ms | 99.8% m-u | x | x | 113.2 ms +- 0.4 ms | 112.4 ms +- 0.8 ms | 99.3% l-d-r | | | 80.2 ms +- 0.3 ms | 80.6 ms +- 0.6 ms | 100.5% l-d-r | | x | 3.899 s +- 0.020 s | 194.8 ms +- 4.0 ms | 5.0% <-- l-d-r | x | | 83.4 ms +- 0.8 ms | 83.2 ms +- 0.2 ms | 99.8% l-d-r | x | x | 732.2 ms +- 4.3 ms | 194.9 ms +- 1.0 ms | 26.6% <-- status --copies: repo | N | T | before (mean +- stdev) | after (mean +- stdev) | % of before ------+---+---+------------------------+-----------------------+------------ m-u | | | 1.917 s +- 0.005 s | 1.914 s +- 0.004 s | 99.8% m-u | | x | 1.909 s +- 0.012 s | 1.934 s +- 0.004 s | 101.3% m-u | x | | 1.915 s +- 0.005 s | 1.904 s +- 0.004 s | 99.4% m-u | x | x | 94.8 ms +- 0.3 ms | 94.7 ms +- 0.2 ms | 99.9% l-d-r | | | 593.9 ms +- 1.2 ms | 594.6 ms +- 9.4 ms | 100.1% l-d-r | | x | 595.2 ms +- 3.8 ms | 597.2 ms +- 2.6 ms | 100.3% l-d-r | x | | 182.5 ms +- 1.6 ms | 182.1 ms +- 0.6 ms | 99.8% l-d-r | x | x | 149.6 ms +- 0.9 ms | 149.1 ms +- 0.8 ms | 99.7% update $rev^; ~/src/hg/hg{hg}/hg update $rev: repo | N | T | before (mean +- stdev) | after (mean +- stdev) | % of before ------+---+---+------------------------+-----------------------+------------ m-u | | | 3.121 s +- 0.007 s | 3.129 s +- 0.012 s | 100.3% m-u | | x | 2.972 s +- 0.011 s | 2.981 s +- 0.012 s | 100.3% m-u | x | | 3.144 s +- 0.014 s | 3.141 s +- 0.011 s | 99.9% m-u | x | x | 312.2 ms +- 2.4 ms | 312.3 ms +- 2.1 ms | 100.0% l-d-r | | | 444.4 ms +- 4.3 ms | 446.9 ms +- 5.3 ms | 100.6% l-d-r | | x | 9.159 s +- 0.069 s | 9.182 s +- 0.040 s | 100.3% l-d-r | x | | 254.6 ms +- 1.6 ms | 255.2 ms +- 1.6 ms | 100.2% l-d-r | x | x | 1.525 s +- 0.007 s | 1.577 s +- 0.007 s | 103.4% <--? Differential Revision: https://phab.mercurial-scm.org/D4845

treemanifests: skip extraneous check for item before calling _loadlazy Differential Revision: https://phab.mercurial-scm.org/D4844

treemanifests: make _loadchildrensetlazy just call _loadlazy This was suggested on the original review for _loadchildrensetlazy (D4370), it's taken me a while to get to it though. Differential Revision: https://phab.mercurial-scm.org/D4843

treemanifests: make _loadlazy tolerate item not on _lazydirs I'd like to clean up a few cases where we check for an item in _lazydirs before calling _loadlazy - this will remove an extraneous dict lookup and make it slightly more versatile. Differential Revision: https://phab.mercurial-scm.org/D4842

debugcommands: add a debugindexstats command Someone went through the trouble of recording these stats, so let's make them accessible. Differential Revision: https://phab.mercurial-scm.org/D4832

rust-chg: add main program It can at least connect to a *running* command server, and execute Mercurial command. No signal handling nor daemon management is implemented yet.

rust-chg: add interface to chdir the server

rust-chg: add Client extensions to run cHg-specific requests This just provides a nicer way to issue command-server requests.