archive cli docs inconsistent with code

[nate-d-olson]

Snakemake version
8.11.3
Describe the bug
snakemake --archive filename.tar.gz, returns error

WorkflowError:
Unsupported archive format (supported: .tar, .tar.gz, .tar.bz2, .tar.xz)

Additional context

From the codebase it looks like only .tar and .xz extensions are allowed

snakemake/snakemake/workflow.py

Line 315 in e7cb7fb

assert path.suffixes == [".tar", ".xz"]

. The cli argpase documentation indicates additional archive formats are supported,

snakemake/snakemake/cli.py

Line 1080 in e7cb7fb

"formats are .tar, .tar.gz, .tar.bz2 and .tar.xz.",

.

It would be nice if snakemake would support tar.gz archive files again but at minimum the cli help docs and error message should be consistent with the codebase.

[NelisDrost]

I had a look into this to see if it might be an easy fix. The error is actually being thrown by a different part of the code DAG.archive():

if path.suffix == ".tar":
    mode = "x"
elif path.suffixes == [".tar", ".bz2"]:
    mode = "x:bz2"
elif path.suffixes == [".tar", ".xz"]:
    mode = "x:xz"
elif path.suffixes == [".tar", ".gz"]:
    mode = "x:gz"
else:
    raise WorkflowError(
        "Unsupported archive format "
        "(supported: .tar, .tar.gz, .tar.bz2, .tar.xz)"
    )

From that, it looks like the supported formats match those reported via argparse. I tried to recreate the issue, but archiving to .tar.gz works fine on my system (windows 10, python 3.12).

There may be nothing to fix here, or there may be something else in OPs setup that's causing the issue.
@nate-d-olson - are you still getting the same error? Could you provide some more details about your setup?