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43b321ce91
There are a few cases where changing to a raw string will change the behavior; I'll address that in a later patch.
35 lines
1.4 KiB
Python
35 lines
1.4 KiB
Python
from bootstrapvz.base import Task
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from .. import phases
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from ..exceptions import TaskError
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class CheckExternalCommands(Task):
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description = 'Checking availability of external commands'
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phase = phases.validation
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@classmethod
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def run(cls, info):
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import re
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import os
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import logging
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# https://github.com/PyCQA/pylint/issues/73
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# pylint: disable=no-name-in-module,import-error,useless-suppression
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from distutils.spawn import find_executable
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missing_packages = []
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log = logging.getLogger(__name__)
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for command, package in info.host_dependencies.items():
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log.debug('Checking availability of ' + command)
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path = find_executable(command)
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if path is None or not os.access(path, os.X_OK):
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if re.match(r'^https?:\/\/', package):
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msg = ('The command `{command}\' is not available, '
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'you can download the software at `{package}\'.'
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.format(command=command, package=package))
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else:
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msg = ('The command `{command}\' is not available, '
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'it is located in the package `{package}\'.'
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.format(command=command, package=package))
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missing_packages.append(msg)
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if missing_packages:
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msg = '\n'.join(missing_packages)
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raise TaskError(msg)
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