Cargo is currently recompiling uv-python on every invocation because the
minified JSON output file is getting a mod time newer than the last run.
Instead, set the mod time of the output file to the same as the input
file.
I think this is ostensively breaking, though I think the impact would be
small given this will go out in 0.9.1 and should only affect people
using pre-release Python versions.
When `3.14.0` is requested (opposed to `3.14`), we treat this as a
request for a final / stable version and ignore pre-releases.
I think this is a fairly clean way to allow users to explicitly request
the stable version.
Closes https://github.com/astral-sh/uv/issues/16175
Follows #16208
Pick up python-build-standalone tag 20251007 to add 3.14.0 final
and 3.13.8, and adjust tests.
Also, fix matching version requests with prereleases: `uvx
python@3.14.0rc3` should not be satisfied by 3.14.0 final.
Co-authored-by: Geoffrey Thomas <geofft@ldpreload.com>
The `uv-python` crate reads the checked-in download metadata to write
out a minified version to be statically included into the binary.
Sometimes, the resulting `download-metadata-minified.json` can go
missing, such as when `uv` is installed via `cargo` as a git source, and
there is an update; `cargo` will do a hard reset on the git repo it
stores in the cache, causing it to be deleted. In these instances, the
`uv-python` crate does not currently re-run its build script, because as
it happens, there was no change to the `download-metadata.json` since it
was last compiled. This causes a build error like:
```
Updating git repository `https://github.com/astral-sh/uv`
Installing uv v0.8.24 (https://github.com/astral-sh/uv?tag=0.8.24#252f8873)
Updating crates.io index
Compiling uv-version v0.8.24 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-version)
Compiling uv-git v0.0.1 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-git)
Compiling uv-build-backend v0.1.0 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-build-backend)
Compiling uv-configuration v0.0.1 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-configuration)
Compiling uv-client v0.0.1 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-client)
Compiling uv-extract v0.0.1 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-extract)
Compiling uv-workspace v0.0.1 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-workspace)
Compiling uv-python v0.0.1 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-python)
Compiling uv-requirements-txt v0.0.1 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-requirements-txt)
Compiling uv-bin-install v0.0.1 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-bin-install)
Compiling uv-publish v0.1.0 (/home/skhawtho/.cargo/git/checkouts/uv-c9e40703e19509a8/252f887/crates/uv-publish)
error: couldn't read `crates/uv-python/src/download-metadata-minified.json`: No such file or directory (os error 2)
--> crates/uv-python/src/downloads.rs:795:45
|
795 | const BUILTIN_PYTHON_DOWNLOADS_JSON: &str = include_str!("download-metadata-minified.json");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: could not compile `uv-python` (lib) due to 1 previous error
error: failed to compile `uv v0.8.24 (https://github.com/astral-sh/uv?tag=0.8.24#252f8873)`, intermediate artifacts can be found at `/home/skhawtho/.cache/cargo`.
To reuse those artifacts with a future compilation, set the environment variable `CARGO_TARGET_DIR` to that path.
```
This fixes the issue by also adding a `rerun-if-changed` on the
resulting minified JSON file.
Separately, this revision also changes the output directory of the
minified file to the build script's output directory via the `OUT_DIR`
environment variable, so as not to pollute the source code.
Turns out if the minor versions matched we returned false from
`is_upgrade_of` instead of continuing to compare prerelease versions.
Closes#15955.
Note: test cases were initially generated by Claude - I tried making
them shorter.
## Test plan
```
❯ cargo run -- -v python upgrade 3.14
[...]
DEBUG Inspecting existing executable at `/Users/zsol/.local/bin/python3.14`
DEBUG Replacing existing executable for `cpython-3.14.0rc2-macos-aarch64-none` at `/Users/zsol/.local/bin/python3.14` with executable for `cpython-3.14.0rc3-macos-aarch64-none` since it is an upgrade
DEBUG Updated executable at `/Users/zsol/.local/bin/python3.14` to cpython-3.14.0rc3-macos-aarch64-none
Installed Python 3.14.0rc3 in 5.04s
+ cpython-3.14.0rc3-macos-aarch64-none (python3.14)
[...]
❯ uvx python3.14 -V
Python 3.14.0rc3
```
Extends https://github.com/astral-sh/uv/pull/15679
I'm not sure if we want to do this. It is probably _generally_ true, but
I think I'd rather remove the special casing entirely? I think the main
case for this is that it could help prevent regressions from #15679 and
we can remove it in a breaking release?
While investigating https://github.com/astral-sh/uv/pull/15679, I
created an unnamed conda environment and noticed this quality which
allows us to detect that it's not the base environment.
## Summary
I spent time trying to figure out how to support this but came up empty.
It _seems_ like maybe the `DefaultFields` implementation in
`tracing-subscriber` uses debug formatting for fields...? So if you have
a string with ANSI codes, they end up printing as unformatted values? I
even reverted all our custom formatting in `logging.rs` and saw the same
thing.
Closes https://github.com/astral-sh/uv/issues/15840.
Closes https://github.com/astral-sh/uv/issues/15604
The previous logic does not match the discussion in the original issue
about this feature, nor does it match the comment for the function. I'm
confused because I know this logic is working for some people? I'm
consequently a little wary of making this change. I'm following up with
some additional changes that should ensure this is robust, e.g., #15680
## Summary
Ignore managed pre-release versions of Python for purposes of creating a
`requires-python` constraint when running `uv init --script`. This makes
the behavior consistent with `uv init` for normal projects.
## Test Plan
Added a regression test that makes sure that the constraint is
`requires-python = ">=3.13"`, even though a pre-release version of 3.14
is installed.
The initial motivation for this change was that we were using both the
`windows`, the `window_sys` and the `windows_core` crate in various
places. These crates have slightly unconventional versioning scheme
where there is a large workspace with the same version in general, but
only some crates get breaking releases when a new breaking release
happens, the others stay on the previous breaking version. The `windows`
crate is a shim for all three of them, with a single version. This
simplifies handling the versions.
Using `windows` over `windows_sys` has the advantage of a higher level
error interface, we now get a `Result` for all windows API calls instead
of C-style int-returns and get-last-error calls. This makes the
uv-keyring crate more resilient.
We keep using the `windows_registry` crate, which provides a higher
level interface to windows registry access.
When there is an error during the streaming download and unpack for
Python interpreter and bin installs, we would previously fail, causing a
lot of CI flakes on GitHub Actions.
The problem was that the error is not one of the extended IO errors we
were previously handling, but a regular reqwest error, nested below
layers of errors of other crates processing the stream, including some
IO errors. We now handle nested reqwest errors, too.
This surfaced another problem: Our manual retry loop couldn't inform the
retry middleware that it already performed the limit of retries, and
that the middleware should not retry anymore. While too many retries are
more a problem for debugging than for the user, this causes confusing
error output. To work around this, we disable the retries in the client
and handle all retry errors in our loop.
Fixes https://github.com/astral-sh/uv/issues/14171
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
Allows pinning the Python build version via environment variables, e.g.,
`UV_PYTHON_CPYTHON_BUILD=...`. Each variable is implementation specific,
because they use different versioning schemes.
Updates the Python download metadata to include a `build` string, so we
can filter downloads by the pin. Writes the build version to a file in
the managed install, e.g., `cpython-3.10.18-macos-aarch64-none/BUILD`,
so we can filter installed versions by the pin.
Some important follow-up here:
- Include the build version in not found errors (when pinned)
- Automatically use a remote list of Python downloads to satisfy build
versions not present in the latest embedded download metadata
Some less important follow-ups to consider:
- Allow using ranges for build version pins
## Summary
This is causing some cyclic dependencies issues for me, because these
can be used in virtually _any_ crate (like `uv-install-wheel`), which
then means that all of `uv-configuration` becomes a dependency, etc. I
think this should be a leaf crate so that we can safely depend on it
anywhere.
We should not unnecessarily leak memory. Instead, we follow the general
patterns and use `Cow` for strings that can be from either a static or a
dynamic source.
Zanie Blue
github-actions[bot]
Andrei Berenda
konsti
Skyler Hawthorne
Zsolt Dollenstein
Charlie Marsh
David Peter
Ahmed Ilyas