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"""
Print available tox environments.
"""
from __future__ import annotations
from itertools import chain
from tox.config.cli.parser import ToxParser
from tox.plugin import impl
from tox.session.env_select import register_env_select_flags
from tox.session.state import State
@impl
def tox_add_option(parser: ToxParser) -> None:
our = parser.add_command("list", ["l"], "list environments", list_env)
our.add_argument("--no-desc", action="store_true", help="do not show description", dest="list_no_description")
d = register_env_select_flags(our, default=None, group_only=True)
d.add_argument("-d", action="store_true", help="list just default envs", dest="list_default_only")
def list_env(state: State) -> int:
option = state.conf.options
has_group_select = bool(option.factors or option.labels)
active_only = has_group_select or option.list_default_only
active = dict.fromkeys(state.envs.iter())
inactive = {} if active_only else {env: None for env in state.envs.iter(only_active=False) if env not in active}
if not has_group_select and not option.list_no_description and active:
print("default environments:")
max_length = max((len(env) for env in chain(active, inactive)), default=0)
def report_env(name: str) -> None:
if not option.list_no_description:
tox_env = state.envs[name]
text = tox_env.conf["description"]
if not text.strip():
text = "[no description]"
text = text.replace("\n", " ")
msg = f"{env.ljust(max_length)} -> {text}".strip()
else:
msg = env
print(msg)
for env in active:
report_env(env)
if not has_group_select and not option.list_default_only and inactive:
if not option.list_no_description:
if active: # pragma: no branch
print("")
print("additional environments:")
for env in inactive:
report_env(env)
return 0
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