pyproject: lock in the major version of `black` that's required
The `hghave` checks already look for an exact this minor version of this, but
according to their Stability Policy[1], we can use any version with the same
major number. The reason for adding this here is we don't want someone to
blindly run the tool and get a different format because they were running a
different major version locally. It also makes it easier to discover when the
required version has changed, because that's included in the error message.
If there's concern about duplication and forgetting to update one place or the
other, we can pipe a trivial python statement to it, and see if it exits with a
failure. FWIW, having it in the project file here is also enforced when running
`test-check-format.t`. It's not enforced by the `hghave` version check, so if
it gets out of sync, the test will run and print:
Oh no! \xf0\x9f\x92\xa5 \xf0\x9f\x92\x94 \xf0\x9f\x92\xa5 The required version `24` does not match the running version `23.3.0`!
[1] https://github.com/psf/black/blob/30759ca782429221cfb329f335e2074cb359decb/docs/the_black_code_style/index.md?plain=1#L24
# node.py - basic nodeid manipulation for mercurial
#
# Copyright 2005, 2006 Olivia Mackall <olivia@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import annotations
import binascii
# This ugly style has a noticeable effect in manifest parsing
hex = binascii.hexlify
bin = binascii.unhexlify
def short(node):
return hex(node[:6])
nullrev = -1
# pseudo identifier for working directory
# (experimental, so don't add too many dependencies on it)
wdirrev = 0x7FFFFFFF
class sha1nodeconstants:
nodelen = 20
# In hex, this is '0000000000000000000000000000000000000000'
nullid = b"\0" * nodelen
nullhex = hex(nullid)
# Phony node value to stand-in for new files in some uses of
# manifests.
# In hex, this is '2121212121212121212121212121212121212121'
newnodeid = b'!!!!!!!!!!!!!!!!!!!!'
# In hex, this is '3030303030303030303030303030306164646564'
addednodeid = b'000000000000000added'
# In hex, this is '3030303030303030303030306d6f646966696564'
modifiednodeid = b'000000000000modified'
wdirfilenodeids = {newnodeid, addednodeid, modifiednodeid}
# pseudo identifier for working directory
# (experimental, so don't add too many dependencies on it)
# In hex, this is 'ffffffffffffffffffffffffffffffffffffffff'
wdirid = b"\xff" * nodelen
wdirhex = hex(wdirid)
# legacy starting point for porting modules
nullid = sha1nodeconstants.nullid
nullhex = sha1nodeconstants.nullhex
newnodeid = sha1nodeconstants.newnodeid
addednodeid = sha1nodeconstants.addednodeid
modifiednodeid = sha1nodeconstants.modifiednodeid
wdirfilenodeids = sha1nodeconstants.wdirfilenodeids
wdirid = sha1nodeconstants.wdirid
wdirhex = sha1nodeconstants.wdirhex