## Summary
Before:
```console
$ cargo run -- --version
uv 0.5.7 (b17902da0 2024-12-09)
```
After:
```console
$ cargo run -- --version
uv 0.5.7+14 (7cd0ab77a 2024-12-09)
```
Currently `cargo run -- --version` does not includes the number of
commits since last tag, because `cargo-dist` create non-annotated tag,
and
`git log -1 --date=short --abbrev=9 --format='%H %h %cd %(describe)'`
use only annoated tags by default.
```console
$ git log -1 --date=short --abbrev=9 --format='%H %h %cd %(describe)'
7cd0ab77a97cd0ab77a 2024-12-09
```
To include these tags, use `git log -1 --date=short --abbrev=9
--format='%H %h %cd %(describe:tags)'`, which will display:
```console
$ git log -1 --date=short --abbrev=9 --format='%H %h %cd %(describe:tags)'
7cd0ab77a97cd0ab77a 2024-12-09 0.5.7-14-g7cd0ab77a
```
Previously, we were always asking Cargo to rebuild `uv-cli` if
`.git/HEAD` had changed. But in a worktree, `.git` is a file, not a
directory. And the file contains the path to git's internal worktree
state, which also has its own `HEAD` file. So in the case of a worktree,
we read the file and tell Cargo to watch the worktree-specific `HEAD`
file instead of `.git/head`.
The main thing this fixes is that, previously, in a worktree, `cargo
build` would *always* re-compile `uv` even if nothing changed.
This doesn't impact or fix anything in "typical" clones of uv though.
Only in worktrees.
Closes#6196, Closes#6197
## Summary
This PR moves all the CLI code into its own crate, separate from the
`uv` crate. The `uv` crate is iterated on frequently, and the CLI code
comprises a significant portion of it but rarely changes. Removing the
CLI code reduces the `uv` crate size from 1.4MiB to 1.0MiB.
