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20 lines
610 B
Python
20 lines
610 B
Python
from base import Task
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from common import phases
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from common.exceptions import TaskError
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import packages
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class CheckPackages(Task):
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description = 'Checking installed host packages'
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phase = phases.preparation
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predecessors = [packages.HostPackages, packages.ImagePackages]
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def run(self, info):
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from common.tools import log_check_call
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from subprocess import CalledProcessError
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for package in info.host_packages:
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try:
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log_check_call(['/usr/bin/dpkg-query', '-s', package])
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except CalledProcessError:
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msg = "The package ``{0}\'\' is not installed".format(package)
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raise TaskError(msg)
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