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fix: show proper help text (#1065)

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# What does this PR do?
when executing a sub-command like `llama model` the improper help text,
sub-commands, and flags are displayed. each command group needs to have
`.set_defaults` to display this info properly

before: 

```
llama model
usage: llama [-h] {model,stack,download,verify-download} ...

Welcome to the Llama CLI

options:
  -h, --help            show this help message and exit

subcommands:
  {model,stack,download,verify-download}
```

after:

```
llama model
usage: llama model [-h] {download,list,prompt-format,describe,verify-download} ...

Work with llama models

options:
  -h, --help            show this help message and exit

model_subcommands:
  {download,list,prompt-format,describe,verify-download}
```

Signed-off-by: Charlie Doern <cdoern@redhat.com>
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Charlie Doern 2025-02-12 09:38:25 -05:00 • committed by GitHub
parent 5e97dd9919
commit 5f88ff0b6a
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llama_stack/cli/stack/stack.py
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@ -31,6 +31,8 @@ class StackParser(Subcommand):
version=f"{version('llama-stack')}",
)
self.parser.set_defaults(func=lambda args: self.parser.print_help())
subparsers = self.parser.add_subparsers(title="stack_subcommands")
# Add sub-commands