def use_configuration(*scopes_or_paths):
"""Use the configuration scopes passed as arguments within the
context manager.
Args:
*scopes_or_paths: scope objects or paths to be used
Returns:
Configuration object associated with the scopes passed as arguments
"""
global config
# Normalize input and construct a Configuration object
configuration = _config_from(scopes_or_paths)
config.clear_caches(), configuration.clear_caches()
# Save and clear the current compiler cache
saved_compiler_cache = spack.compilers._cache_config_file
spack.compilers._cache_config_file = []
saved_config, config = config, configuration
yield configuration
# Restore previous config files
spack.compilers._cache_config_file = saved_compiler_cache
config = saved_config
def replace_config(configuration):
"""Replace the current global configuration with the instance passed as
argument.
Args:
configuration (Configuration): the new configuration to be used.
Returns:
The old configuration that has been removed
"""
global config
config.clear_caches(), configuration.clear_caches()
old_config, config = config, configuration
return old_config
