uv’s default index strategy was designed with dependency confusion
attacks in mind. [According to the
docs](https://docs.astral.sh/uv/configuration/indexes/#searching-across-multiple-indexes),
“if a package exists on an internal index, it should always be installed
from the internal index, and never from PyPI”. Unfortunately, this is
not true in the case where authentication fails on that internal index.
In that case, uv will simply try the next index (even on the
`first-index` strategy). This means that uv is not secure by default in
this common scenario.
This PR causes uv to stop searching for a package if it encounters an
authentication failure at an index. It is possible to opt out of this
behavior for an index with a new `pyproject.toml` option
`ignore-error-codes`. For example:
```
[[tool.uv.index]]
name = "my-index"
url = "<index-url>"
ignore-error-codes = [401, 403]
```
This will also enable users to handle idiosyncratic registries in a more
fine-grained way. For example, PyTorch registries return a 403 when a
package is not found. In this PR, we special-case PyTorch registries to
ignore 403s, but users can use `ignore-error-codes` to handle similar
behaviors if they encounter them on internal registries.
Depends on #12651Closes#9429Closes#12362
## Summary
If you use `--torch-backend=auto`, we want to avoid selecting (e.g.) a
`+cu124` build of `torch` alongside a `+cu126` build of `torchvision`.
This PR restores #13041 and integrates two PRs from @zanieb:
* #13038
* #13040
It also adds tests for relative URI and fragment handling.
Closes#13037.
---------
Co-authored-by: Zanie Blue <contact@zanie.dev>
uv was failing to authenticate on 302 redirects when credentials were
available. This was because it was relying on `reqwest_middleware`'s
default redirect behavior which bypasses the middleware pipeline when
trying the redirect request (and hence bypasses our authentication
middleware). This PR updates uv to retrigger the middleware pipeline
when handling a 302 redirect, correctly using credentials from the URL,
the keyring, or `.netrc`.
Closes#5595Closes#11097
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
|
[reqwest-middleware](https://redirect.github.com/TrueLayer/reqwest-middleware)
| workspace.dependencies | patch | `0.4.1` -> `0.4.2` |
---
### Release Notes
<details>
<summary>TrueLayer/reqwest-middleware (reqwest-middleware)</summary>
###
[`v0.4.2`](https://redirect.github.com/TrueLayer/reqwest-middleware/releases/tag/reqwest-middleware-v0.4.2)
### Added
- Deprecated `fetch_mode_no_cors` as it's been deprecated in reqwest.
</details>
---
### Configuration
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Automerge - At any time (no schedule defined).
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are satisfied.
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This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [tokio](https://tokio.rs)
([source](https://redirect.github.com/tokio-rs/tokio)) |
dev-dependencies | patch | `1.44.0` -> `1.44.2` |
| [tokio](https://tokio.rs)
([source](https://redirect.github.com/tokio-rs/tokio)) |
workspace.dependencies | patch | `1.44.0` -> `1.44.2` |
### GitHub Vulnerability Alerts
####
[GHSA-rr8g-9fpq-6wmg](https://redirect.github.com/tokio-rs/tokio/pull/7232)
The broadcast channel internally calls `clone` on the stored value when
receiving it, and only requires `T:Send`. This means that using the
broadcast channel with values that are `Send` but not `Sync` can trigger
unsoundness if the `clone` implementation makes use of the value being
`!Sync`.
Thank you to Austin Bonander for finding and reporting this issue.
---
### Release Notes
<details>
<summary>tokio-rs/tokio (tokio)</summary>
###
[`v1.44.2`](https://redirect.github.com/tokio-rs/tokio/releases/tag/tokio-1.44.2):
Tokio v1.44.2
[Compare
Source](https://redirect.github.com/tokio-rs/tokio/compare/tokio-1.44.1...tokio-1.44.2)
This release fixes a soundness issue in the broadcast channel. The
channel
accepts values that are `Send` but `!Sync`. Previously, the channel
called
`clone()` on these values without synchronizing. This release fixes the
channel
by synchronizing calls to `.clone()` (Thanks Austin Bonander for finding
and
reporting the issue).
##### Fixed
- sync: synchronize `clone()` call in broadcast channel ([#​7232])
[#​7232]: https://redirect.github.com/tokio-rs/tokio/pull/7232
###
[`v1.44.1`](https://redirect.github.com/tokio-rs/tokio/releases/tag/tokio-1.44.1):
Tokio v1.44.1
[Compare
Source](https://redirect.github.com/tokio-rs/tokio/compare/tokio-1.44.0...tokio-1.44.1)
### 1.44.1 (March 13th, 2025)
##### Fixed
- rt: skip defer queue in `block_in_place` context ([#​7216])
[#​7216]: https://redirect.github.com/tokio-rs/tokio/pull/7216
</details>
---
### Configuration
📅 **Schedule**: Branch creation - "" (UTC), Automerge - At any time (no
schedule defined).
🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.
♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
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Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [unicode-width](https://redirect.github.com/unicode-rs/unicode-width)
| workspace.dependencies | minor | `0.1.13` -> `0.2.0` |
---
### Release Notes
<details>
<summary>unicode-rs/unicode-width (unicode-width)</summary>
###
[`v0.2.0`](https://redirect.github.com/unicode-rs/unicode-width/compare/v0.1.14...v0.2.0)
[Compare
Source](https://redirect.github.com/unicode-rs/unicode-width/compare/v0.1.14...v0.2.0)
</details>
---
### Configuration
📅 **Schedule**: Branch creation - "before 4am on Monday" (UTC),
Automerge - At any time (no schedule defined).
🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.
♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.
🔕 **Ignore**: Close this PR and you won't be reminded about this update
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---
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View the [repository job
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---------
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: konstin <konstin@mailbox.org>
## Summary
Add an option to overwrite the list of available Python downloads from a
local JSON file by using the environment variable
`UV_PYTHON_DOWNLOADS_JSON_URL`
as an experimental support for providing custom sources for Python
distribution binaries #8015
related #10203
I probably should make the JSON to be fetched from a remote URL instead
of a local file.
please let me know what you think and I will modify the code
accordingly.
## Test Plan
### normal run
```
root@75c66494ba8b:/# /code/target/release/uv python list
cpython-3.14.0a4+freethreaded-linux-x86_64-gnu <download available>
cpython-3.14.0a4-linux-x86_64-gnu <download available>
cpython-3.13.1+freethreaded-linux-x86_64-gnu <download available>
cpython-3.13.1-linux-x86_64-gnu <download available>
cpython-3.12.8-linux-x86_64-gnu <download available>
cpython-3.11.11-linux-x86_64-gnu <download available>
cpython-3.10.16-linux-x86_64-gnu <download available>
cpython-3.9.21-linux-x86_64-gnu <download available>
cpython-3.8.20-linux-x86_64-gnu <download available>
cpython-3.7.9-linux-x86_64-gnu <download available>
pypy-3.10.14-linux-x86_64-gnu <download available>
pypy-3.9.19-linux-x86_64-gnu <download available>
pypy-3.8.16-linux-x86_64-gnu <download available>
pypy-3.7.13-linux-x86_64-gnu <download available>
```
### empty JSON file
```sh
root@75c66494ba8b:/# export UV_PYTHON_DOWNLOADS_JSON_URL=/code/crates/uv-python/my-download-metadata.json
root@75c66494ba8b:/# cat $UV_PYTHON_DOWNLOADS_JSON_URL
{}
root@75c66494ba8b:/# /code/target/release/uv python list
root@75c66494ba8b:/#
```
### JSON file with valid version
```sh
root@75c66494ba8b:/# export UV_PYTHON_DOWNLOADS_JSON_URL=/code/crates/uv-python/my-download-metadata.json
root@75c66494ba8b:/# cat $UV_PYTHON_DOWNLOADS_JSON_URL
{
"cpython-3.11.9-linux-x86_64-gnu": {
"name": "cpython",
"arch": {
"family": "x86_64",
"variant": null
},
"os": "linux",
"libc": "gnu",
"major": 3,
"minor": 11,
"patch": 9,
"prerelease": "",
"url": "https://github.com/astral-sh/python-build-standalone/releases/download/20240814/cpython-3.11.9%2B20240814-x86_64-unknown-linux-gnu-install_only_stripped.tar.gz",
"sha256": "daa487c7e73005c4426ac393273117cf0e2dc4ab9b2eeda366e04cd00eea00c9",
"variant": null
}
}
root@75c66494ba8b:/# /code/target/release/uv python list
cpython-3.11.9-linux-x86_64-gnu <download available>
root@75c66494ba8b:/#
```
### Remote Path
```sh
root@75c66494ba8b:/# export UV_PYTHON_DOWNLOADS_JSON_URL=http://a.com/file.json
root@75c66494ba8b:/# /code/target/release/uv python list
error: Remote python downloads JSON is not yet supported, please use a local path (without `file://` prefix)
```
---------
Co-authored-by: Aria Desires <aria.desires@gmail.com>
