Allow for conda install to accept URLs to lock files as the lock file positonal argument

[matthewfeickert]

Checklist

• I added a descriptive title
• I searched open requests and couldn't find a duplicate

What is the idea?

Hi. It would be a nice feature to be able to give a URL to a lock file for conda-lock install's lock file positional argument

conda-lock install [OPTIONS] [LOCK_FILE]

as can be done with micromamba create's --file argument.

At the moment conda-lock install explicitly looks for a local file with pathlib.Path

conda-lock/conda_lock/conda_lock.py

Lines 1443 to 1463 in 83b18d5

	def install(
	ctx: click.Context,
	conda: Optional[str],
	mamba: bool,
	micromamba: bool,
	copy: bool,
	prefix: Optional[str],
	name: Optional[str],
	lock_file: pathlib.Path,
	auth: Optional[str],
	auth_file: Optional[PathLike],
	validate_platform: bool,
	log_level: TLogLevel,
	dev: bool,
	extras: List[str],
	) -> None:
	# bail out if we do not encounter the lockfile
	lock_file = pathlib.Path(lock_file)
	if not lock_file.exists():
	print(ctx.get_help())
	sys.exit(1)

Why is this needed?

It would be in general nice to be able to have similar syntacic features to the conda/mamba/micromamba create command. To give an explicit example, this create command with a URL to a valid conda-lock file is valid

$ micromamba create --name iris-hep --file https://iris-hep.org/analysis-system-env-nightlies/iris-hep/3.11/conda-lock.yml

but to do the same action with conda-lock install requires downloading it locally first

$ curl -sLO https://iris-hep.org/analysis-system-env-nightlies/iris-hep/3.11/conda-lock.yml
$ conda-lock install --micromamba --name iris-hep conda-lock.yml

This is very much a convienence feature, but it would be nice to have.

What should happen?

The user experience would be that the lock file positional argument in the conda-lock install CLI

conda-lock install [OPTIONS] [LOCK_FILE]

would accept either a valid URL or a valid local path. So both of the following would be valid

• URL

$ conda-lock install --name iris-hep https://iris-hep.org/analysis-system-env-nightlies/iris-hep/3.11/conda-lock.yml

• local path (current approach)

$ curl -sLO https://iris-hep.org/analysis-system-env-nightlies/iris-hep/3.11/conda-lock.yml
$ conda-lock install --name iris-hep conda-lock.yml

Additional Context

No response

[maresb]

That would be pretty awesome. Want to write a PR?

[matthewfeickert]

Want to write a PR?

I'm generally not opposed to it, and I would probably just poke at what micromamba does, but realistically I woudn't be able to start contributing anything for at least a month given the amount of backlog I have for my work. So I would welcome another contributor to beat me to it.