def __init__(self):
self._bin = which('conda')
if self._bin is None:
raise InvalidEnvironmentException('No conda installation found. '
'Install conda first.')
if LooseVersion(self._info()['conda_version']) < LooseVersion('4.6.0'):
raise InvalidEnvironmentException(
'Conda version 4.6.0 or newer '
'is required. Visit '
'https://docs.conda.io/en/latest/miniconda.html '
'for installation instructions.')
if 'conda-forge' not in self.config()['channels']:
raise InvalidEnvironmentException(
'Conda channel \'conda-forge\' '
'is required. Specify it with CONDA_CHANNELS '
'environment variable.')
def step_init(self, flow, graph, step, decos, environment, datastore, logger):
if environment.TYPE != 'conda':
raise InvalidEnvironmentException('The *@conda* decorator requires '
'--environment=conda')
def _logger(line, **kwargs):
logger(line)
self.local_root = LocalDataStore.get_datastore_root_from_config(_logger)
environment.set_local_root(self.local_root)
self.architecture = self._architecture(decos)
self.step = step
self.flow = flow
self.datastore = datastore
self.base_attributes = self._get_base_attributes()
def _architecture(self, decos):
for deco in decos:
if deco.name == 'batch':
# force conda resolution for linux-64 architectures
return 'linux-64'
bit = '32'
if platform.machine().endswith('64'):
bit = '64'
if platform.system() == 'Linux':
return 'linux-%s' % bit
elif platform.system() == 'Darwin':
return 'osx-%s' % bit
else:
raise InvalidEnvironmentException('The *@conda* decorator is not supported '
'outside of Linux and Darwin platforms')
def flow_init(self, flow, graph, environment, datastore, logger):
if environment.TYPE != 'conda':
raise InvalidEnvironmentException(
'The *@conda* decorator requires '
'--environment=conda')