Implement uv help manually instead of using Clap default

[zanieb]

Extends #4772

Implements uv help ourselves so we can do things like #4909
Adds hints to use uv help for more details during short help display.

[konstin]

Found a way to make it panic, but i do like the more concise help a lot.

$ cargo run -q -- help pip install
thread 'main' panicked at /home/konsti/.cargo/registry/src/index.crates.io-6f17d22bba15001f/clap_builder-4.5.8/src/builder/debug_asserts.rs:214:13:
Command install: Argument or group 'offline' specified in 'conflicts_with*' for 'refresh' does not exist
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[zanieb]

Fixed the panic :)

[charliermarsh]

Should these be different?

puffin on  zb/cli-help-cmd [$] is 📦 v0.2.23 via 🐍 v3.12.3 via 🦀 v1.79.0
❯ cargo run -- python --help
   Compiling uv-cli v0.0.1 (/Users/crmarsh/workspace/puffin/crates/uv-cli)
   Compiling uv v0.2.23 (/Users/crmarsh/workspace/puffin/crates/uv)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.81s
     Running `target/debug/uv python --help`
Manage Python installations

Usage: uv python [OPTIONS] <COMMAND>

Commands:
  list       List the available Python installations
  install    Download and install Python versions
  find       Search for a Python installation
  dir        Show the uv Python installation directory
  uninstall  Uninstall Python versions

Options:
  -q, --quiet                                  Do not print any output
  -v, --verbose...                             Use verbose output
      --color <COLOR_CHOICE>                   Control colors in output [default: auto] [possible values: auto, always, never]
      --native-tls                             Whether to load TLS certificates from the platform's native certificate store [env: UV_NATIVE_TLS=]
      --offline                                Disable network access, relying only on locally cached data and locally available files
      --python-preference <PYTHON_PREFERENCE>  Whether to prefer using Python from uv or on the system [possible values: only-managed, installed, managed, system, only-system]
      --python-fetch <PYTHON_FETCH>            Whether to automatically download Python when required [possible values: automatic, manual]
  -n, --no-cache                               Avoid reading from or writing to the cache [env: UV_NO_CACHE=]
      --cache-dir <CACHE_DIR>                  Path to the cache directory [env: UV_CACHE_DIR=]
      --config-file <CONFIG_FILE>              The path to a `uv.toml` file to use for configuration [env: UV_CONFIG_FILE=]
  -h, --help                                   Print help
  -V, --version                                Print version

Use `uv help python` for more details.
puffin on  zb/cli-help-cmd [$] is 📦 v0.2.23 via 🐍 v3.12.3 via 🦀 v1.79.0 took 3s
❯ cargo run -- help python
   Compiling uv-cli v0.0.1 (/Users/crmarsh/workspace/puffin/crates/uv-cli)
   Compiling uv v0.2.23 (/Users/crmarsh/workspace/puffin/crates/uv)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.83s
     Running `target/debug/uv help python`
Manage Python installations

Usage: python <COMMAND>

Commands:
  list       List the available Python installations
  install    Download and install Python versions
  find       Search for a Python installation
  dir        Show the uv Python installation directory
  uninstall  Uninstall Python versions
  help       Print this message or the help of the given subcommand(s)

Options:
  -h, --help
          Print help (see a summary with '-h')

[zanieb]

Yes they should be different but we should be displaying the long-form documentation for all those options in the second invocation. Will investigate that...

[zanieb]

Ah I pushed a fix to #4909 but not here by accident.