## Summary
This is required to solve https://github.com/astral-sh/uv/issues/4669,
because the `Requires-Python` version can now vary across a resolution.
For example, within certain forks, we might have a more narrow range,
which would allow us to use distributions that would not be allowed for
the global resolution.
This should be fine because `requires-python` is part of the package
metadata, so it should be consistent between files within a package
version. As such, there shouldn't be any risk that we incorrectly
prioritize distributions by omitting this information.
(To be more specific, the risk is something like: we prioritize some
wheel over a source distribution within a package-version, so we don't
track the source distribution at all. Then, later, when we choose a
candidate, we see that the wheel doesn't meet the `Requires-Python`
requirement, even though the source distribution _would've_ met it. If
files within a distribution could have varied support, this would be a
real risk.)
## 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
This PR consolidates the concurrency limits used throughout `uv` and
exposes two limits, `UV_CONCURRENT_DOWNLOADS` and
`UV_CONCURRENT_BUILDS`, as environment variables.
Currently, `uv` has a number of concurrent streams that it buffers using
relatively arbitrary limits for backpressure. However, many of these
limits are conflated. We run a relatively small number of tasks overall
and should start most things as soon as possible. What we really want to
limit are three separate operations:
- File I/O. This is managed by tokio's blocking pool and we should not
really have to worry about it.
- Network I/O.
- Python build processes.
Because the current limits span a broad range of tasks, it's possible
that a limit meant for network I/O is occupied by tasks performing
builds, reading from the file system, or even waiting on a `OnceMap`. We
also don't limit build processes that end up being required to perform a
download. While this may not pose a performance problem because our
limits are relatively high, it does mean that the limits do not do what
we want, making it tricky to expose them to users
(https://github.com/astral-sh/uv/issues/1205,
https://github.com/astral-sh/uv/issues/3311).
After this change, the limits on network I/O and build processes are
centralized and managed by semaphores. All other tasks are unbuffered
(note that these tasks are still bounded, so backpressure should not be
a problem).
## Summary
All of the resolver code is run on the main thread, so a lot of the
`Send` bounds and uses of `DashMap` and `Arc` are unnecessary. We could
also switch to using single-threaded versions of `Mutex` and `Notify` in
some places, but there isn't really a crate that provides those I would
be comfortable with using.
The `Arc` in `OnceMap` can't easily be removed because of the uv-auth
code which uses the
[reqwest-middleware](https://docs.rs/reqwest-middleware/latest/reqwest_middleware/trait.Middleware.html)
crate, that seems to adds unnecessary `Send` bounds because of
`async-trait`. We could duplicate the code and create a `OnceMapLocal`
variant, but I don't feel that's worth it.
## Summary
This makes it easier to add (e.g.) JSON Schema derivations to the type.
If we have support for other dates in the future, we can generalize it
to a `UserDate` or similar.
## Summary
This PR enables `--require-hashes` with unnamed requirements. The key
change is that `PackageId` becomes `VersionId` (since it refers to a
package at a specific version), and the new `PackageId` consists of
_either_ a package name _or_ a URL. The hashes are keyed by `PackageId`,
so we can generate the `RequiredHashes` before we have names for all
packages, and enforce them throughout.
Closes#2979.
## Summary
This PR enables hash generation for URL requirements when the user
provides `--generate-hashes` to `pip compile`. While we include the
hashes from the registry already, today, we omit hashes for URLs.
To power hash generation, we introduce a `HashPolicy` abstraction:
```rust
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum HashPolicy<'a> {
/// No hash policy is specified.
None,
/// Hashes should be generated (specifically, a SHA-256 hash), but not validated.
Generate,
/// Hashes should be validated against a pre-defined list of hashes. If necessary, hashes should
/// be generated so as to ensure that the archive is valid.
Validate(&'a [HashDigest]),
}
```
All of the methods on the distribution database now accept this policy,
instead of accepting `&'a [HashDigest]`.
Closes#2378.
## Summary
This PR modifies the distribution database to return both the
`Metadata23` and the computed hashes when clients request metadata.
No behavior changes, but this will be necessary to power
`--generate-hashes`.
## Summary
This PR adds support for hash-checking mode in `pip install` and `pip
sync`. It's a large change, both in terms of the size of the diff and
the modifications in behavior, but it's also one that's hard to merge in
pieces (at least, with any test coverage) since it needs to work
end-to-end to be useful and testable.
Here are some of the most important highlights:
- We store hashes in the cache. Where we previously stored pointers to
unzipped wheels in the `archives` directory, we now store pointers with
a set of known hashes. So every pointer to an unzipped wheel also
includes its known hashes.
- By default, we don't compute any hashes. If the user runs with
`--require-hashes`, and the cache doesn't contain those hashes, we
invalidate the cache, redownload the wheel, and compute the hashes as we
go. For users that don't run with `--require-hashes`, there will be no
change in performance. For users that _do_, the only change will be if
they don't run with `--generate-hashes` -- then they may see some
repeated work between resolution and installation, if they use `pip
compile` then `pip sync`.
- Many of the distribution types now include a `hashes` field, like
`CachedDist` and `LocalWheel`.
- Our behavior is similar to pip, in that we enforce hashes when pulling
any remote distributions, and when pulling from our own cache. Like pip,
though, we _don't_ enforce hashes if a distribution is _already_
installed.
- Hash validity is enforced in a few different places:
1. During resolution, we enforce hash validity based on the hashes
reported by the registry. If we need to access a source distribution,
though, we then enforce hash validity at that point too, prior to
running any untrusted code. (This is enforced in the distribution
database.)
2. In the install plan, we _only_ add cached distributions that have
matching hashes. If a cached distribution is missing any hashes, or the
hashes don't match, we don't return them from the install plan.
3. In the downloader, we _only_ return distributions with matching
hashes.
4. The final combination of "things we install" are: (1) the wheels from
the cache, and (2) the downloaded wheels. So this ensures that we never
install any mismatching distributions.
- Like pip, if `--require-hashes` is provided, we require that _all_
distributions are pinned with either `==` or a direct URL. We also
require that _all_ distributions have hashes.
There are a few notable TODOs:
- We don't support hash-checking mode for unnamed requirements. These
should be _somewhat_ rare, though? Since `pip compile` never outputs
unnamed requirements. I can fix this, it's just some additional work.
- We don't automatically enable `--require-hashes` with a hash exists in
the requirements file. We require `--require-hashes`.
Closes#474.
## Test Plan
I'd like to add some tests for registries that report incorrect hashes,
but otherwise: `cargo test`
## Summary
This lets us remove circular dependencies (in the future, e.g., #2945)
that arise from `FlatIndex` needing a bunch of resolver-specific
abstractions (like incompatibilities, required hashes, etc.) that aren't
necessary to _fetch_ the flat index entries.
## Summary
If we build a source distribution from the registry, and the version
doesn't match that of the filename, we should error, just as we do for
mismatched package names. However, we should also backtrack here, which
we didn't previously.
Closes https://github.com/astral-sh/uv/issues/2953.
## Test Plan
Verified that `cargo run pip install docutils --verbose --no-cache
--reinstall` installs `docutils==0.21` instead of the invalid
`docutils==0.21.post1`.
In the logs, I see:
```
WARN Unable to extract metadata for docutils: Package metadata version `0.21` does not match given version `0.21.post1`
```
Needed to prevent circular dependencies in my toolchain work (#2931). I
think this is probably a reasonable change as we move towards persistent
configuration too?
Unfortunately `BuildIsolation` needs to be in `uv-types` to avoid
circular dependencies still. We might be able to resolve that in the
future.
## Summary
This partially revives https://github.com/astral-sh/uv/pull/2135 (with
some modifications) to enable users to opt-in to looking for packages
across multiple indexes.
The behavior is such that, in version selection, we take _any_
compatible version from a "higher-priority" index over the compatible
versions of a "lower-priority" index, even if that means we might accept
an "older" version.
Closes https://github.com/astral-sh/uv/issues/2775.
## Summary
Rather than storing the `redirects` on the resolver, this PR just
re-uses the "convert this URL to precise" logic when we convert to a
`Resolution` after-the-fact. I think this is a lot simpler: it removes
state from the resolver, and simplifies a lot of the hooks around
distribution fetching (e.g., `get_or_build_wheel_metadata` no longer
returns `(Metadata23, Option<Url>)`).
This is driving me a little crazy and is becoming a larger problem in
#2596 where I need to move more types (like `Upgrade` and `Reinstall`)
into this crate. Anything that's shared across our core resolver,
install, and build crates needs to be defined in this crate to avoid
cyclic dependencies. We've outgrown it being a single file with some
shared traits.
There are no behavioral changes here.
Extends the "compatibility" types introduced in #1293 to apply to source
distributions as well as wheels.
- We now track the most-relevant incompatible source distribution
- Exclude newer, Python requirements, and yanked versions are all
tracked as incompatibilities in the new model (this lets us remove
`DistMetadata`!)
## Summary
PyPI now supports Metadata 2.2, which means distributions with Metadata
2.2-compliant metadata will start to appear. The upside is that if a
source distribution includes a `PKG-INFO` file with (1) a metadata
version of 2.2 or greater, and (2) no dynamic fields (at least, of the
fields we rely on), we can read the metadata from the `PKG-INFO` file
directly rather than running _any_ of the PEP 517 build hooks.
Closes https://github.com/astral-sh/uv/issues/2009.
I previously add `spawn_blocking` to the version map construction as it
had become a bottleneck
(https://github.com/astral-sh/uv/pull/1163/files#diff-704ceeaedada99f90369eac535713ec82e19550bff166cd44745d7277ecae527R116).
With the zero copy deserialization, this has become so fast we don't
need to move it to the thread pool anymore. I've also checked
`DataWithCachePolicy` but it seems to still take a significant amount of
time. Span visualization:
Resolving jupyter warm:
Resolving jupyter cold:
I've also updated the instrumentation a little.
We don't seem cpu bound for the cold cache (top) and refresh case
(bottom) from jupyter:
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## Summary
To integrate `uv` into `pixi` I need to specify a custom
`ResolverProvider` to be able to specify that some packages are already
installed by conda and should not be touched. However, some of the types
required to implement your own `ResolverProvider` were not accessible
through the public API. This PR basically adds them.
## Test Plan
I didnt add an explicit test for this.
First, replace all usages in files in-place. I used my editor for this.
If someone wants to add a one-liner that'd be fun.
Then, update directory and file names:
```
# Run twice for nested directories
find . -type d -print0 | xargs -0 rename s/puffin/uv/g
find . -type d -print0 | xargs -0 rename s/puffin/uv/g
# Update files
find . -type f -print0 | xargs -0 rename s/puffin/uv/g
```
Then add all the files again
```
# Add all the files again
git add crates
git add python/uv
# This one needs a force-add
git add -f crates/uv-trampoline
```
2024-02-15 11:19:46 -06:00
Renamed from crates/puffin-resolver/src/resolver/provider.rs (Browse further)
