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contrib: add a hint if the Windows dependency MSI is already installed...
contrib: add a hint if the Windows dependency MSI is already installed In the past, I've gotten confused when the script failed on seemingly random python installs (and thus the py3.8 install was commented out from the last time this happened to me, which has been reverted here). This particular error code means the package was already installed. For python, it means the major and minor version are the same, but the micro version may differ. In practice, ignoring the python installation failure will cause the pip installation that happens next to fail, because python.exe for that version is somewhere else on the system. This could probably be fixed by running py.exe with the major and minor version, but that is skipped during the install for some reason. I didn't feel like over complicating this though, and at least there's a better hint when the problem occurs. Differential Revision: https://phab.mercurial-scm.org/D12560

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__init__.py
57 lines | 1.5 KiB | text/x-python | PythonLexer
# __init__.py - High-level automation interfaces
#
# Copyright 2019 Gregory Szorc <gregory.szorc@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
# no-check-code because Python 3 native.
import pathlib
import secrets
from .aws import AWSConnection
class HGAutomation:
"""High-level interface for Mercurial automation.
Holds global state, provides access to other primitives, etc.
"""
def __init__(self, state_path: pathlib.Path):
self.state_path = state_path
state_path.mkdir(exist_ok=True)
def default_password(self):
"""Obtain the default password to use for remote machines.
A new password will be generated if one is not stored.
"""
p = self.state_path / 'default-password'
try:
with p.open('r', encoding='ascii') as fh:
data = fh.read().strip()
if data:
return data
except FileNotFoundError:
pass
password = secrets.token_urlsafe(24)
with p.open('w', encoding='ascii') as fh:
fh.write(password)
fh.write('\n')
p.chmod(0o0600)
return password
def aws_connection(self, region: str, ensure_ec2_state: bool = True):
"""Obtain an AWSConnection instance bound to a specific region."""
return AWSConnection(self, region, ensure_ec2_state=ensure_ec2_state)