A lightweight system configurator with a declarative API. Nice:
- Only requires Python3
- Dependency-free, single-file (
curl ... | sudo python3 ...)
Not very nice:
- Currently only supports macOS
- Is specific to me (George)
example:
# directly in single file so logic code above
process(
Command(["echo", "hello", "world"]),
Serial([
Command(["echo", "this", "first"]),
Command(["echo", "this", "second"]),
])
)At its core, syscfg is a concurrent task graph processor. Each node is customized to a speific task via a subclass. Here is the simplest task - a command:
class Command(Node):
"""A command to be executed on the system."""
def __init__(
self: Command,
args: Sequence[str | Path],
stdin: BytesOrTextIO | None = None,
env: Mapping[str, str] | None = os.environ,
logger: Logger = LOGGER,
dependencies: set[Node] = set(),
):
super().__init__(dependencies)
self._args: Sequence[str] = list(map(str, args))
self._stdin: BytesOrTextIO | None = stdin
self._env: Mapping[str, str] | None = env
self._logger: Logger = logger
def __repr__(self: Command) -> str:
return f"<{self.__class__.__name__} {self._args}>"
@property
def _key(self: Command) -> Hashable:
return tuple(self._args)
def act(self: Command) -> None:
log_cmd_streams(self._args, env=self._env, logger=self._logger)