## Summary
Implements the `uv init` command, which initializes a project
(`pyproject.toml`, `README.md`, `src/__init__.py`) in the current
directory, or in the given path. `uv init` also does workspace
discovery.
Resolves https://github.com/astral-sh/uv/issues/1360.
---------
Co-authored-by: Zanie Blue <contact@zanie.dev>
## Summary
Makes the `tools()` return value include per-tool errors. This makes it
easy to skip (rather than failing) in `uv tool list`, _and_ improves `uv
tool uninstall` to remove those invalid tools, rather than leaving them
around. (We already had that behavior for `uv tool uninstall ruff` with
an invalid `ruff`, but `uv tool uninstall --all` just left them.)
Closes https://github.com/astral-sh/uv/issues/5151.
Search for all `python3.x` minor versions in PATH, skipping those we
already know we can use.
For example, let's say `python` and `python3` are Python 3.10. When a
user requests `>= 3.11`, we still need to find a `python3.12` in PATH.
We do so with a regex matcher.
Fixes#4709
## Summary
Workaround the `stream_wheel` not retry issue
[found](https://github.com/astral-sh/uv/issues/3514#issuecomment-2229820667)
in #3514, it's not a perfect solution but I think it's acceptable
because the error should not occur frequently.
## Test Plan
Manually using `iptables -A OUTPUT -p tcp -dport 3128 -j REJECT
--reject-with tcp-reset` to inject connection reset error to the HTTP
proxy that proxies PyPI requests.
```
error: Failed to prepare distributions
Caused by: Failed to fetch wheel: piqp==0.4.1
Caused by: Request failed after 3 retries
Caused by: error sending request for url (09ade94dfd/piqp-0.4.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl)
Caused by: client error (Connect)
Caused by: tcp connect error: Connection refused (os error 111)
Caused by: Connection refused (os error 111)
```
The only pubgrub error that can occur is a `NoSolutionError`, and the
only place it can occur is `unit_propagation`, all other variants if
`PubGrubError` are unreachable. By changing the return type on pubgrub's
side (https://github.com/astral-sh/pubgrub/pull/28), we can remove the
pattern matching and the `unreachable!()` asserts on `PubGrubError`.
Our pubgrub error wrapper used to have a two phased initialization,
first mostly stubs in `solve[_tracked]()` and then adding the actual
context in `resolve()`. When constructing the error in `solve` we
already have all this context, so we can unify this to a regular
constructor and remove the special casing in `resolve()` and `hints()`.
## Summary
Largely based on rustup's implementation (linked in the source).
Closes#5027.
## Test Plan
- Changed the executable directory to `uv/foo`.
- Ran script; verified that I could access executables in `foo`.
## Summary
I'll open follow-up tickets for Windows support.
Closes https://github.com/astral-sh/uv/issues/4953.
## Test Plan
```
❯ cargo run tool install flask
Resolved 7 packages in 353ms
Prepared 7 packages in 392ms
Installed 7 packages in 17ms
+ blinker==1.8.2
+ click==8.1.7
+ flask==3.0.3
+ itsdangerous==2.2.0
+ jinja2==3.1.4
+ markupsafe==2.1.5
+ werkzeug==3.0.3
Installed 1 executable: flask
warning: /Users/crmarsh/.local/bin is not on your PATH. To use installed tools, run:
export PATH="/Users/crmarsh/.local/bin:$PATH"
```
Then:
```
❯ which flask
flask not found
```
Then:
```
❯ cargo run tool ensurepath
warning: `uv tool ensurepath` is experimental and may change without warning.
Updated configuration file: /Users/crmarsh/workspace/puffin/bar
Restart your shell for the changes to take effect.
```
Then:
```
❯ which flask
/Users/crmarsh/.local/bin/flask
```
## Summary
Closes https://github.com/astral-sh/uv/issues/4671.
## Test Plan
```
❯ XDG_BIN_HOME="/Users/crmarsh/workspace/uv/foo bar" cargo run tool install black --force
Installed 2 executables: black, blackd
warning: `/Users/crmarsh/workspace/uv/foo bar` is not on your PATH. To use installed tools, run:
export PATH="/Users/crmarsh/workspace/uv/foo bar:$PATH"
```
## Summary
The basic strategy:
- When the user does `uv tool run`, we resolve the `from` and `with`
requirements (always).
- After resolving, we generate a hash of the requirements. For now, I'm
just converting to a lockfile and hashing _that_, but that's an
implementation detail.
- Once we have a hash, we _also_ hash the interpreter.
- We then store environments in
`${CACHE_DIR}/${INTERPRETER_HASH}/${RESOLUTION_HASH}`.
Some consequences:
- We cache based on the interpreter, so if you request a different
Python, we'll create a new environment (even if they're compatible).
This has the nice side-effect of ensuring that we don't use environments
for interpreters that were later deleted.
- We cache the `from` and `with` together. In practice, we may want to
cache them separately, then layer them? But this is also an
implementation detail that we could change later.
- Because we use the lockfile as the cache key, we will invalidate the
cache when the format changes. That seems ok, but we could improve it in
the future by generating a stable hash from a lockfile that's
independent of the schema.
Closes https://github.com/astral-sh/uv/issues/4752.
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Closes#4653
## Summary
Adds the tool version to the list command right beside the tool name
```
$ uv tool list
black v24.2.0
```
Following the proposed format discussed in #4653
## Test Plan
`cargo test tool_list`
<!-- How was it tested? -->
---------
Co-authored-by: Zanie Blue <contact@zanie.dev>
## Summary
This doesn't cache the tool environment; rather, it just uses the `tool
install` environment if it satisfies the request.
Closes https://github.com/astral-sh/uv/issues/4742.
Whew this is a lot.
The user-facing changes are:
- `uv toolchain` to `uv python` e.g. `uv python find`, `uv python
install`, ...
- `UV_TOOLCHAIN_DIR` to` UV_PYTHON_INSTALL_DIR`
- `<UV_STATE_DIR>/toolchains` to `<UV_STATE_DIR>/python` (with
[automatic
migration](https://github.com/astral-sh/uv/pull/4735/files#r1663029330))
- User-facing messages no longer refer to toolchains, instead using
"Python", "Python versions" or "Python installations"
The internal changes are:
- `uv-toolchain` crate to `uv-python`
- `Toolchain` no longer referenced in type names
- Dropped unused `SystemPython` type (previously replaced)
- Clarified the type names for "managed Python installations"
- (more little things)
## Summary
For now the semantics are such that if the requested requirements from
the command line don't match the receipt (or if any `--reinstall` or
`--upgrade` is requested), we proceed with an install, passing the
`--reinstall` and `--upgrade` to the underlying Python environment.
This may lead to some unintuitive behaviors, but it's simplest for now.
For example:
- `uv tool install black<24` followed by `uv tool install black
--upgrade` will install the latest version of `black`, removing the
`<24` constraint.
- `uv tool install black --with black-plugin` followed by `uv tool
install black` will remove `black-plugin`.
Closes https://github.com/astral-sh/uv/issues/4659.
