e.g.
```
❯ uv toolchain install
Found installed toolchain 'cpython-3.9.19-macos-aarch64-none'
A toolchain is already installed. Use `uv toolchain install <request>` to install a specific toolchain
```
instead of
```
❯ uv toolchain install
Using latest Python version
Found installed toolchain 'cpython-3.9.19-macos-aarch64-none'
Already installed at /Users/zb/Library/Application Support/uv/toolchains/cpython-3.9.19-macos-aarch64-none
```
## Summary
Something that looks like it was forgotten to replace in #4164.
## Test Plan
Run `cargo run toolchain install` should display the warning: ``warning:
`uv toolchain install` is experimental and may change without warning.``
By splitting `path` into a lockable, relative (or absolute) and an
absolute installable path and by splitting between urls and paths by
dist type, we can store relative paths in the lockfile.
## Summary
We may choose to persist these eventually, but for now, it's useful to
have them colocated with the cache, and in their own dedicated bucket
(so, at the very least, we can keep track of the use-cases).
Closes https://github.com/astral-sh/uv/issues/4219.
A merge kerfuffle from #4222 and #4218
Now we fail because we genuinely can't find any interpreters since tests
contexts are isolated by default. I'll improve the error message and
maybe add another test case once `main` is fixed.
By setting the test search path to an empty path, we avoid accidentally
pulling interpreters from the system during a test case.
Cherry-picked from https://github.com/astral-sh/uv/pull/4214
Cherry-picked from https://github.com/astral-sh/uv/pull/4214
The first commit gets us some context on an IO error during queries:
Previously:
```
failed to canonicalize path `[VENV]/bin/python3`
Caused by: No such file or directory (os error 2)
```
Now:
```
Failed to query Python interpreter
Caused by: failed to canonicalize path `[VENV]/bin/python3`
Caused by: No such file or directory (os error 2)
```
but really we shouldn't attempt to query a missing interpreter during
discovery anyway, so we improve handling of that too.
## Summary
Should be no behavior changes, but one piece of technical debt I noticed
left over in the URL resolver. We already have structured paths, so we
shouldn't need to compare verbatim URLs.
## Summary
If the user requests a package as both editable and non-editable, the
editable now "wins".
Previously, `pip install -e . .` would install as editable. However,
`pip install -e . -r requirements.txt` would _not_ if `requirements.txt`
contained `.`, because we ignored `editable` when deduplicating and the
order of iteration was just dependent on internals.
Closes https://github.com/astral-sh/uv/issues/4053.
Adds a command (following #4163) to download and install specific
toolchains. While we fetch toolchains on demand, this is useful for,
e.g., pre-downloading a toolchain in a Docker image build.
~I kind of think we should call this `install` instead of `fetch`~ I
changed the name from `fetch` to `install`.
## Summary
Adds handling for a few cases to improve interoperability with Poetry:
- If the `project` schema is invalid, we now raise a hard error, rather
than treating the metadata as dynamic and then falling back to the build
backend. This could cause problems, I'm not sure. It's stricter than
before.
- If the project contains `tool.poetry` but omits
`project.dependencies`, we now treat it as dynamic. We could go even
further and treat _any_ Poetry project as dynamic, but then we'd be
ignoring user-declared dependencies, which is also confusing.
Closes https://github.com/astral-sh/uv/issues/4142.
Extends https://github.com/astral-sh/uv/pull/4121
Part of #2607
Adds support for managed toolchain fetching to `uv venv`, e.g.
```
❯ cargo run -q -- venv --python 3.9.18 --preview -v
DEBUG Searching for Python 3.9.18 in search path or managed toolchains
DEBUG Searching for managed toolchains at `/Users/zb/Library/Application Support/uv/toolchains`
DEBUG Found CPython 3.12.3 at `/opt/homebrew/bin/python3` (search path)
DEBUG Found CPython 3.9.6 at `/usr/bin/python3` (search path)
DEBUG Found CPython 3.12.3 at `/opt/homebrew/bin/python3` (search path)
DEBUG Requested Python not found, checking for available download...
DEBUG Using registry request timeout of 30s
INFO Fetching requested toolchain...
DEBUG Downloading 20240224/cpython-3.9.18%2B20240224-aarch64-apple-darwin-pgo%2Blto-full.tar.zst to temporary location /Users/zb/Library/Application Support/uv/toolchains/.tmpgohKwp
DEBUG Extracting cpython-3.9.18%2B20240224-aarch64-apple-darwin-pgo%2Blto-full.tar.zst
DEBUG Moving /Users/zb/Library/Application Support/uv/toolchains/.tmpgohKwp/python to /Users/zb/Library/Application Support/uv/toolchains/cpython-3.9.18-macos-aarch64-none
Using Python 3.9.18 interpreter at: /Users/zb/Library/Application Support/uv/toolchains/cpython-3.9.18-macos-aarch64-none/install/bin/python3
Creating virtualenv at: .venv
INFO Removing existing directory
Activate with: source .venv/bin/activate
```
The preview flag is required. The fetch is performed if we can't find an
interpreter that satisfies the request. Once fetched, the toolchain will
be available for later invocations that include the `--preview` flag.
There will be follow-ups to improve toolchain management in general,
there is still outstanding work from the initial implementation.
## Summary
Similar to how we abstracted the dependencies into
`ResolutionDependencyNames`, I think it makes sense to abstract the base
packages into a `ResolutionPackage`. This also avoids leaking details
about the various `PubGrubPackage` enum variants to `ResolutionGraph`.
Remove the panic when there is an invalid wheel source, instead surface
the error. This error can only occur when manually editing the lock
file, but since it's an external file, we should error and not panic.
This change is helpful since the method needs to be able to error for
relative path support.
## Summary
If a package lacks a source distribution, and we can't find a compatible
wheel for the current platform, we need to just _assume_ that the
package will have a valid wheel on all platforms on which it's
requested; if not, we raise an error at install time.
It's possible that we can be smarter about this over time. For example,
if the package was requested _only_ for macOS, we could verify that
there's at least one macOS-compatible wheel. See the linked issue for
more details.
Closes https://github.com/astral-sh/uv/issues/4139.
## Summary
If we want more granular control over how these errors are handled, then
we need to move them out of the TOML deserialization.
No actual behavior changes here.
Part of https://github.com/astral-sh/uv/issues/4142.
## Summary
See the long comment inline. I think this is debatable but probably
right for now. The other options have their own problems, but there are
a few alternate ideas in the comment.
Closes https://github.com/astral-sh/uv/issues/4132.
The basic idea here is to make it so forking can only ever result in a
resolution that, for a particular marker environment, will only install
at most one version of a package. We can guarantee this by ensuring we
only fork on conflicting dependency specifications only when their
corresponding markers are completely disjoint. If they aren't, then
resolution _must_ find a single version of the package in the
intersection of the two dependency specifications.
A test for this case has been added to packse here:
https://github.com/astral-sh/packse/pull/182. Previously, that test
would result in a resolution with two different unconditional versions
of the same package. With this change, resolution fails (as it should).
A commit-by-commit review should be helpful here, since the first commit
is a refactor to make the second commit a bit more digestible.
## Summary
I think we should be able to model PubGrub such that this isn't
necessary (at least for the case described in the issue), but for now,
let's just avoid attempting to build very old distributions in
prefetching.
Closes https://github.com/astral-sh/uv/issues/4136.
