convert-bazaar: use breezy package instead of old bzr one Breezy is the most recent of the two, and works on Python 3 while being compatible with the (old) Bazaar file format. This patch contains a variety of unicode <-> bytes changes, API breakage fixing, restoring failing imports and changing the executable from `bzr` to `brz`. I recommend using the debian packages for `brz` and `python3-breezy` (3.1+), because the pip package seems to be haunted by radioactive dragons. Differential Revision: https://phab.mercurial-scm.org/D10513

bzr: only support bzr conversion on Python3 Python 2 support will be dropped from Mercurial before anyone needs to do a bzr -> hg conversion on Python 2 again. Bazaar tests were broken with the new lib anyway, which we'll get into in the next patches. Differential Revision: https://phab.mercurial-scm.org/D10512

rewriteutil: add pointer to help text when rewrite would cause divergence The evolve extension's version of the hint has this pointer. I missed it when I moved it to core. This is pretty much the same as D10723. Turns out I missed two places :( Differential Revision: https://phab.mercurial-scm.org/D10832

rhg: Add support for dirstate-v2 Differential Revision: https://phab.mercurial-scm.org/D10804

rhg: Remove some intermediate Vecs in `rhg files` Instead of calling `parse_dirstate` which then calls `parse_dirstate_entries`, call the latter directly in order to skip some intermediate steps. Differential Revision: https://phab.mercurial-scm.org/D10803

merge: make applyupdates() not mutate mresult argument We have an extension at work that overrides `merge.applyupdates()` to make it skip some writes and instead instruct the virtual filesystem we use to get a different version. That override doesn't work correctly when doing `hg co -m` and there's a modified file in the dirstate that's deleted in the destination. That's because `applyupdates()` mutates its `mresult` argument and our extension had passed in a modified copied of `mresult` to the overridden function, which resulted in the mutation not having any effect. This patch fixes that by letting the caller (i.e. `merge._update()`) update `mresult` with the extra actions instead. Besides fixing our internal extension, that seems cleaner to me anyway (better to not mutate `mresult` only in some cases and we can skip some of the logic if we're not going to update the dirstate anyway). Differential Revision: https://phab.mercurial-scm.org/D10830

index: use an explicit constant for INDEX_HEADER format and use it for docket This avoid leaking python-3.6 compatibility details too much. Differential Revision: https://phab.mercurial-scm.org/D10831

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10822

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. We extract the long message in a module level constant for clarity. Differential Revision: https://phab.mercurial-scm.org/D10821

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10820

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. We extract the long message in a module level constant for clarity. Differential Revision: https://phab.mercurial-scm.org/D10819

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10818

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10817

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10816

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. We extract the long message in a module level constant for clarity. Differential Revision: https://phab.mercurial-scm.org/D10815

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10814

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10813

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10812

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10811

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. We extract the long message in a module level constant for clarity. Differential Revision: https://phab.mercurial-scm.org/D10810

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10809

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10808

verify: use some intermediate variables instead of a multi-liner This is shorter and easier to read as the indentation remains the same. Differential Revision: https://phab.mercurial-scm.org/D10807

verify: expand a one liner into explicit commands The result is not longer, but it is more edible. Differential Revision: https://phab.mercurial-scm.org/D10806

verify: align a comment line This argument description is back with it comrade. Differential Revision: https://phab.mercurial-scm.org/D10805

dirstate-v2: Drop parent directory cache when removing a dirstate node The premise of the directory cache is that the dirstate contains child nodes for every entry that `read_dir` would return. When removing nodes, that may not be the case anymore so the cache should be invalidated. Differential Revision: https://phab.mercurial-scm.org/D10829

dirstate-v2: Add --dirs to debugdirstate command `hg debugdirstate --dirs` also shows information stored in the dirstate (for `read_dir` caching) about directories. Differential Revision: https://phab.mercurial-scm.org/D10828

dirstate-v2: Write .hg/dirstate back to disk on directory cache changes Differential Revision: https://phab.mercurial-scm.org/D10827

dirstate-v2: Skip readdir in status based on directory mtime When calling `read_dir` during `status` and the directory is found to be eligible for caching (see code comments), write the directory’s mtime to the dirstate. The presence of a directory mtime in the dirstate is meaningful and indicates eligibility. When an eligible directory mtime is found in the dirstate and `stat()` shows that the mtime has not changed, `status` can skip calling `read_dir` again and instead rely on the names of child nodes in the dirstate tree. The `tempfile` crate is used to create a temporary file in order to use its modification time as "current time" with the same truncation as other files and directories would have in their own modification time. Differential Revision: https://phab.mercurial-scm.org/D10826

dirstate-v2: Allow tree nodes without an entry to store a timestamp Timestamps are stored on 96 bits: * 64 bits for the signed number of seconds since the Unix epoch * 32 bits for the nanoseconds in the `0 <= ns < 1_000_000_000` range For now timestamps are not used or set yet. Differential Revision: https://phab.mercurial-scm.org/D10825