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mod.rs
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//! Given a set of requirements, find a set of compatible packages.
use std::borrow::Cow;
use std::fmt::{Display, Formatter};
use std::ops::Deref;
use std::sync::Arc;
use anyhow::Result;
use dashmap::{DashMap, DashSet};
use futures::{FutureExt, StreamExt};
use itertools::Itertools;
use pubgrub::error::PubGrubError;
use pubgrub::range::Range;
use pubgrub::solver::{Incompatibility, State};
use rustc_hash::{FxHashMap, FxHashSet};
use tokio_stream::wrappers::ReceiverStream;
use tracing::{debug, info_span, instrument, trace, Instrument};
use url::Url;
use distribution_types::{
BuiltDist, Dist, DistributionMetadata, IncompatibleDist, IncompatibleSource, IncompatibleWheel,
InstalledDist, Name, RemoteSource, ResolvedDist, ResolvedDistRef, SourceDist, VersionOrUrl,
};
pub(crate) use locals::Locals;
use pep440_rs::{Version, MIN_VERSION};
use pep508_rs::{MarkerEnvironment, MarkerTree, Requirement};
use platform_tags::Tags;
use pypi_types::Metadata23;
pub(crate) use urls::Urls;
use uv_client::{FlatIndex, RegistryClient};
use uv_distribution::DistributionDatabase;
use uv_interpreter::Interpreter;
use uv_normalize::{ExtraName, PackageName};
use uv_types::{BuildContext, Constraints, InstalledPackagesProvider, Overrides};
use crate::candidate_selector::{CandidateDist, CandidateSelector};
use crate::dependency_provider::UvDependencyProvider;
use crate::editables::Editables;
use crate::error::ResolveError;
use crate::manifest::Manifest;
use crate::pins::FilePins;
use crate::preferences::Preferences;
use crate::pubgrub::{
PubGrubDependencies, PubGrubDistribution, PubGrubPackage, PubGrubPriorities, PubGrubPython,
PubGrubSpecifier,
};
use crate::python_requirement::PythonRequirement;
use crate::resolution::ResolutionGraph;
pub use crate::resolver::index::InMemoryIndex;
pub use crate::resolver::provider::{
DefaultResolverProvider, PackageVersionsResult, ResolverProvider, VersionsResponse,
WheelMetadataResult,
};
use crate::resolver::reporter::Facade;
pub use crate::resolver::reporter::{BuildId, Reporter};
use crate::yanks::AllowedYanks;
use crate::{DependencyMode, Exclusions, Options, VersionMap};
mod index;
mod locals;
mod provider;
mod reporter;
mod urls;
/// The package version is unavailable and cannot be used
/// Unlike [`PackageUnavailable`] this applies to a single version of the package
#[derive(Debug, Clone)]
pub(crate) enum UnavailableVersion {
/// Version is incompatible because it has no usable distributions
IncompatibleDist(IncompatibleDist),
}
/// The package is unavailable and cannot be used
#[derive(Debug, Clone)]
pub(crate) enum UnavailablePackage {
/// Index lookups were disabled (i.e., `--no-index`) and the package was not found in a flat index (i.e. from `--find-links`)
NoIndex,
/// Network requests were disabled (i.e., `--offline`), and the package was not found in the cache.
Offline,
/// The package was not found in the registry
NotFound,
}
enum ResolverVersion {
/// A usable version
Available(Version),
/// A version that is not usable for some reason
Unavailable(Version, UnavailableVersion),
}
pub struct Resolver<
'a,
Provider: ResolverProvider,
InstalledPackages: InstalledPackagesProvider + Send + Sync,
> {
project: Option<PackageName>,
requirements: Vec<Requirement>,
constraints: Constraints,
overrides: Overrides,
preferences: Preferences,
exclusions: Exclusions,
editables: Editables,
urls: Urls,
locals: Locals,
dependency_mode: DependencyMode,
markers: &'a MarkerEnvironment,
python_requirement: PythonRequirement,
selector: CandidateSelector,
index: &'a InMemoryIndex,
installed_packages: &'a InstalledPackages,
/// Incompatibilities for packages that are entirely unavailable
unavailable_packages: DashMap<PackageName, UnavailablePackage>,
/// The set of all registry-based packages visited during resolution.
visited: DashSet<PackageName>,
reporter: Option<Arc<dyn Reporter>>,
provider: Provider,
}
impl<
'a,
Context: BuildContext + Send + Sync,
InstalledPackages: InstalledPackagesProvider + Send + Sync,
> Resolver<'a, DefaultResolverProvider<'a, Context>, InstalledPackages>
{
/// Initialize a new resolver using the default backend doing real requests.
///
/// Reads the flat index entries.
#[allow(clippy::too_many_arguments)]
pub fn new(
manifest: Manifest,
options: Options,
markers: &'a MarkerEnvironment,
interpreter: &'a Interpreter,
tags: &'a Tags,
client: &'a RegistryClient,
flat_index: &'a FlatIndex,
index: &'a InMemoryIndex,
build_context: &'a Context,
installed_packages: &'a InstalledPackages,
) -> Result<Self, ResolveError> {
let provider = DefaultResolverProvider::new(
client,
DistributionDatabase::new(client, build_context),
flat_index,
tags,
PythonRequirement::new(interpreter, markers),
AllowedYanks::from_manifest(&manifest, markers),
options.exclude_newer,
build_context.no_binary(),
build_context.no_build(),
);
Self::new_custom_io(
manifest,
options,
markers,
PythonRequirement::new(interpreter, markers),
index,
provider,
installed_packages,
)
}
}
impl<
'a,
Provider: ResolverProvider,
InstalledPackages: InstalledPackagesProvider + Send + Sync,
> Resolver<'a, Provider, InstalledPackages>
{
/// Initialize a new resolver using a user provided backend.
pub fn new_custom_io(
manifest: Manifest,
options: Options,
markers: &'a MarkerEnvironment,
python_requirement: PythonRequirement,
index: &'a InMemoryIndex,
provider: Provider,
installed_packages: &'a InstalledPackages,
) -> Result<Self, ResolveError> {
Ok(Self {
index,
unavailable_packages: DashMap::default(),
visited: DashSet::default(),
selector: CandidateSelector::for_resolution(options, &manifest, markers),
dependency_mode: options.dependency_mode,
urls: Urls::from_manifest(&manifest, markers)?,
locals: Locals::from_manifest(&manifest, markers),
project: manifest.project,
requirements: manifest.requirements,
constraints: manifest.constraints,
overrides: manifest.overrides,
preferences: Preferences::from_iter(manifest.preferences, markers),
exclusions: manifest.exclusions,
editables: Editables::from_requirements(manifest.editables),
markers,
python_requirement,
reporter: None,
provider,
installed_packages,
})
}
/// Set the [`Reporter`] to use for this installer.
#[must_use]
pub fn with_reporter(self, reporter: impl Reporter + 'static) -> Self {
let reporter = Arc::new(reporter);
Self {
reporter: Some(reporter.clone()),
provider: self.provider.with_reporter(Facade { reporter }),
..self
}
}
/// Resolve a set of requirements into a set of pinned versions.
pub async fn resolve(self) -> Result<ResolutionGraph, ResolveError> {
// A channel to fetch package metadata (e.g., given `flask`, fetch all versions) and version
// metadata (e.g., given `flask==1.0.0`, fetch the metadata for that version).
// Channel size is set to the same size as the task buffer for simplicity.
let (request_sink, request_stream) = tokio::sync::mpsc::channel(50);
// Run the fetcher.
let requests_fut = self.fetch(request_stream).fuse();
// Run the solver.
let resolve_fut = self.solve(request_sink).fuse();
// Wait for both to complete.
match tokio::try_join!(requests_fut, resolve_fut) {
Ok(((), resolution)) => {
self.on_complete();
Ok(resolution)
}
Err(err) => {
// Add version information to improve unsat error messages.
Err(if let ResolveError::NoSolution(err) = err {
ResolveError::NoSolution(
err.with_available_versions(
&self.python_requirement,
&self.visited,
&self.index.packages,
)
.with_selector(self.selector.clone())
.with_python_requirement(&self.python_requirement)
.with_index_locations(self.provider.index_locations())
.with_unavailable_packages(&self.unavailable_packages),
)
} else {
err
})
}
}
}
/// Run the `PubGrub` solver.
#[instrument(skip_all)]
async fn solve(
&self,
request_sink: tokio::sync::mpsc::Sender<Request>,
) -> Result<ResolutionGraph, ResolveError> {
let root = PubGrubPackage::Root(self.project.clone());
let state = ResolverState {
pubgrub: State::init(root.clone(), MIN_VERSION.clone()),
next: root,
pins: FilePins::default(),
priorities: PubGrubPriorities::default(),
added_dependencies: FxHashMap::default(),
markers: FxHashMap::default(),
};
let mut forked_states = vec![state];
let mut resolutions = vec![];
debug!(
"Solving with target Python version {}",
self.python_requirement.target()
);
'FORK: while let Some(mut state) = forked_states.pop() {
loop {
// Run unit propagation.
state.pubgrub.unit_propagation(state.next.clone())?;
// Pre-visit all candidate packages, to allow metadata to be fetched in parallel. If
// the dependency mode is direct, we only need to visit the root package.
if self.dependency_mode.is_transitive() {
Self::pre_visit(
state.pubgrub.partial_solution.prioritized_packages(),
&request_sink,
)
.await?;
}
// Choose a package version.
let Some(highest_priority_pkg) = state
.pubgrub
.partial_solution
.pick_highest_priority_pkg(|package, _range| {
state.priorities.get(package).unwrap_or_default()
})
else {
resolutions.push(state.into_resolution());
continue 'FORK;
};
state.next = highest_priority_pkg;
let term_intersection = state
.pubgrub
.partial_solution
.term_intersection_for_package(&state.next)
.ok_or_else(|| {
PubGrubError::Failure(
"a package was chosen but we don't have a term.".into(),
)
})?;
let decision = self
.choose_version(
&state.next,
term_intersection.unwrap_positive(),
&mut state.pins,
&request_sink,
)
.await?;
// Pick the next compatible version.
let version = match decision {
None => {
debug!("No compatible version found for: {next}", next = state.next);
let term_intersection = state
.pubgrub
.partial_solution
.term_intersection_for_package(&state.next)
.expect("a package was chosen but we don't have a term.");
let reason = {
if let PubGrubPackage::Package {
name: ref package_name,
..
} = state.next
{
// Check if the decision was due to the package being unavailable
self.unavailable_packages.get(package_name).map(
|entry| match *entry {
UnavailablePackage::NoIndex => {
"was not found in the provided package locations"
}
UnavailablePackage::Offline => "was not found in the cache",
UnavailablePackage::NotFound => {
"was not found in the package registry"
}
},
)
} else {
None
}
};
let inc = Incompatibility::no_versions(
state.next.clone(),
term_intersection.clone(),
reason.map(ToString::to_string),
);
state.pubgrub.add_incompatibility(inc);
continue;
}
Some(version) => version,
};
let version = match version {
ResolverVersion::Available(version) => version,
ResolverVersion::Unavailable(version, unavailable) => {
let reason = match unavailable {
// Incompatible requires-python versions are special in that we track
// them as incompatible dependencies instead of marking the package version
// as unavailable directly
UnavailableVersion::IncompatibleDist(
IncompatibleDist::Source(IncompatibleSource::RequiresPython(
requires_python,
))
| IncompatibleDist::Wheel(IncompatibleWheel::RequiresPython(
requires_python,
)),
) => {
let python_version = requires_python
.iter()
.map(PubGrubSpecifier::try_from)
.fold_ok(Range::full(), |range, specifier| {
range.intersection(&specifier.into())
})?;
let package = &state.next;
for kind in [PubGrubPython::Installed, PubGrubPython::Target] {
state.pubgrub.add_incompatibility(
Incompatibility::from_dependency(
package.clone(),
Range::singleton(version.clone()),
(PubGrubPackage::Python(kind), python_version.clone()),
),
);
}
state
.pubgrub
.partial_solution
.add_decision(state.next.clone(), version);
continue;
}
UnavailableVersion::IncompatibleDist(incompatibility) => {
incompatibility.to_string()
}
};
state
.pubgrub
.add_incompatibility(Incompatibility::unavailable(
state.next.clone(),
version.clone(),
reason,
));
continue;
}
};
self.on_progress(&state.next, &version);
if state
.added_dependencies
.entry(state.next.clone())
.or_default()
.insert(version.clone())
{
// Retrieve that package dependencies.
let package = &state.next;
let forks = self
.get_dependencies_forking(
package,
&version,
&mut state.priorities,
&request_sink,
)
.await?;
for fork in forks {
let mut state = state.clone();
let dependencies = match fork {
Dependencies::Unavailable(reason) => {
let message = {
if matches!(package, PubGrubPackage::Root(_)) {
// Including front-matter for the root package is redundant
reason.clone()
} else {
format!("its dependencies are unusable because {reason}")
}
};
state
.pubgrub
.add_incompatibility(Incompatibility::unavailable(
package.clone(),
version.clone(),
message,
));
forked_states.push(state);
continue;
}
Dependencies::Available(constraints)
if constraints
.iter()
.any(|(dependency, _, _)| dependency == package) =>
{
return Err(PubGrubError::SelfDependency {
package: package.clone(),
version: version.clone(),
}
.into());
}
Dependencies::Available(constraints) => constraints,
};
/*
let parent = &package;
// eprintln!("===== {:?} {:?} =====", parent.name(), version);
for &(ref package, ref versions, ref marker) in dependencies.iter() {
// use std::ops::Bound;
// let range = match versions.iter().next().unwrap() {
// (Bound::Included(s), Bound::Included(e)) => {
// format!("{s}..={e}")
// }
// (Bound::Included(s), Bound::Excluded(e)) => {
// format!("{s}..{e}")
// }
// (Bound::Included(s), Bound::Unbounded) => {
// format!("{s}..")
// }
// (Bound::Unbounded, Bound::Included(e)) => {
// format!("..={e}")
// }
// (Bound::Unbounded, Bound::Excluded(e)) => {
// format!("..{e}")
// }
// (Bound::Unbounded, Bound::Unbounded) => {
// format!("..")
// }
// _ => unreachable!(),
// };
if let Some(ref marker) = *marker {
// eprintln!("dep: {:?} {} ; {}", package.name(), range, marker);
// state
// .markers
// .entry(package.clone())
// .or_insert_with(|| MarkerTree::And(vec![]))
// .and(marker.clone());
} else {
// eprintln!("dep: {:?} {}", package.name(), range);
}
}
// eprintln!("==========");
*/
// Add that package and version if the dependencies are not problematic.
let dep_incompats = state.pubgrub.add_incompatibility_from_dependencies(
package.clone(),
version.clone(),
dependencies
.into_iter()
.map(|(package, versions, _)| (package, versions)),
);
state.pubgrub.partial_solution.add_version(
package.clone(),
version.clone(),
dep_incompats,
&state.pubgrub.incompatibility_store,
);
forked_states.push(state);
}
continue 'FORK;
} else {
// `dep_incompats` are already in `incompatibilities` so we know there are not satisfied
// terms and can add the decision directly.
state
.pubgrub
.partial_solution
.add_decision(state.next.clone(), version);
}
}
}
let mut combined = Resolution::default();
for resolution in resolutions {
combined.union(resolution);
}
ResolutionGraph::from_state(
&self.index,
&self.preferences,
self.editables.clone(),
combined,
)
}
/// Visit a [`PubGrubPackage`] prior to selection. This should be called on a [`PubGrubPackage`]
/// before it is selected, to allow metadata to be fetched in parallel.
async fn visit_package(
&self,
package: &PubGrubPackage,
priorities: &mut PubGrubPriorities,
request_sink: &tokio::sync::mpsc::Sender<Request>,
) -> Result<(), ResolveError> {
match package {
PubGrubPackage::Root(_) => {}
PubGrubPackage::Python(_) => {}
PubGrubPackage::Package {
name: package_name,
url: None,
..
} => {
// Emit a request to fetch the metadata for this package.
if self.index.packages.register(package_name.clone()) {
priorities.add(package_name.clone());
request_sink
.send(Request::Package(package_name.clone()))
.await?;
}
}
PubGrubPackage::Package {
name: package_name,
url: Some(url),
..
} => {
// Emit a request to fetch the metadata for this distribution.
let dist = Dist::from_url(package_name.clone(), url.clone())?;
if self.index.distributions.register(dist.package_id()) {
priorities.add(dist.name().clone());
request_sink.send(Request::Dist(dist)).await?;
}
}
}
Ok(())
}
/// Visit the set of [`PubGrubPackage`] candidates prior to selection. This allows us to fetch
/// metadata for all of the packages in parallel.
async fn pre_visit<'data>(
packages: impl Iterator<Item = (&'data PubGrubPackage, &'data Range<Version>)>,
request_sink: &tokio::sync::mpsc::Sender<Request>,
) -> Result<(), ResolveError> {
// Iterate over the potential packages, and fetch file metadata for any of them. These
// represent our current best guesses for the versions that we _might_ select.
for (package, range) in packages {
let PubGrubPackage::Package {
name: package_name,
url: None,
..
} = package
else {
continue;
};
request_sink
.send(Request::Prefetch(package_name.clone(), range.clone()))
.await?;
}
Ok(())
}
/// Given a set of candidate packages, choose the next package (and version) to add to the
/// partial solution.
///
/// Returns [None] when there are no versions in the given range.
#[instrument(skip_all, fields(%package))]
async fn choose_version(
&self,
package: &'a PubGrubPackage,
range: &Range<Version>,
pins: &mut FilePins,
request_sink: &tokio::sync::mpsc::Sender<Request>,
) -> Result<Option<ResolverVersion>, ResolveError> {
match package {
PubGrubPackage::Root(_) => Ok(Some(ResolverVersion::Available(MIN_VERSION.clone()))),
PubGrubPackage::Python(PubGrubPython::Installed) => {
let version = self.python_requirement.installed();
if range.contains(version) {
Ok(Some(ResolverVersion::Available(version.deref().clone())))
} else {
Ok(None)
}
}
PubGrubPackage::Python(PubGrubPython::Target) => {
let version = self.python_requirement.target();
if range.contains(version) {
Ok(Some(ResolverVersion::Available(version.deref().clone())))
} else {
Ok(None)
}
}
PubGrubPackage::Package {
name: package_name,
extra,
marker,
url: Some(url),
} => {
if let Some(extra) = extra {
debug!(
"Searching for a compatible version of {package_name}[{extra}] @ {url} ({range})",
);
} else {
debug!(
"Searching for a compatible version of {package_name} @ {url} ({range})"
);
}
// If the dist is an editable, return the version from the editable metadata.
if let Some((_local, metadata)) = self.editables.get(package_name) {
let version = &metadata.version;
// The version is incompatible with the requirement.
if !range.contains(version) {
return Ok(None);
}
// The version is incompatible due to its Python requirement.
if let Some(requires_python) = metadata.requires_python.as_ref() {
let target = self.python_requirement.target();
if !requires_python.contains(target) {
return Ok(Some(ResolverVersion::Unavailable(
version.clone(),
UnavailableVersion::IncompatibleDist(IncompatibleDist::Source(
IncompatibleSource::RequiresPython(requires_python.clone()),
)),
)));
}
}
return Ok(Some(ResolverVersion::Available(version.clone())));
}
let dist = PubGrubDistribution::from_url(package_name, url);
let metadata = self
.index
.distributions
.wait(&dist.package_id())
.await
.ok_or(ResolveError::Unregistered)?;
let version = &metadata.version;
// The version is incompatible with the requirement.
if !range.contains(version) {
return Ok(None);
}
// The version is incompatible due to its Python requirement.
if let Some(requires_python) = metadata.requires_python.as_ref() {
let target = self.python_requirement.target();
if !requires_python.contains(target) {
return Ok(Some(ResolverVersion::Unavailable(
version.clone(),
UnavailableVersion::IncompatibleDist(IncompatibleDist::Source(
IncompatibleSource::RequiresPython(requires_python.clone()),
)),
)));
}
}
Ok(Some(ResolverVersion::Available(version.clone())))
}
PubGrubPackage::Package {
name: package_name,
extra,
marker,
url: None,
} => {
// Wait for the metadata to be available.
let versions_response = self
.index
.packages
.wait(package_name)
.instrument(info_span!("package_wait", %package_name))
.await
.ok_or(ResolveError::Unregistered)?;
self.visited.insert(package_name.clone());
let empty_version_map = VersionMap::default();
let version_map = match *versions_response {
VersionsResponse::Found(ref version_map) => version_map,
VersionsResponse::NoIndex => {
self.unavailable_packages
.insert(package_name.clone(), UnavailablePackage::NoIndex);
&empty_version_map
}
VersionsResponse::Offline => {
self.unavailable_packages
.insert(package_name.clone(), UnavailablePackage::Offline);
&empty_version_map
}
VersionsResponse::NotFound => {
self.unavailable_packages
.insert(package_name.clone(), UnavailablePackage::NotFound);
&empty_version_map
}
};
if let Some(extra) = extra {
debug!(
"Searching for a compatible version of {package_name}[{extra}] ({range})",
);
} else {
debug!("Searching for a compatible version of {package_name} ({range})");
}
// Find a version.
let Some(candidate) = self.selector.select(
package_name,
range,
version_map,
&self.preferences,
self.installed_packages,
&self.exclusions,
) else {
// Short circuit: we couldn't find _any_ versions for a package.
return Ok(None);
};
let dist = match candidate.dist() {
CandidateDist::Compatible(dist) => dist,
CandidateDist::Incompatible(incompatibility) => {
// If the version is incompatible because no distributions are compatible, exit early.
return Ok(Some(ResolverVersion::Unavailable(
candidate.version().clone(),
UnavailableVersion::IncompatibleDist(incompatibility.clone()),
)));
}
};
let filename = match dist.for_installation() {
ResolvedDistRef::Installable(dist) => {
dist.filename().unwrap_or(Cow::Borrowed("unknown filename"))
}
ResolvedDistRef::Installed(_) => Cow::Borrowed("installed"),
};
if let Some(extra) = extra {
debug!(
"Selecting: {}[{}]=={} ({})",
candidate.name(),
extra,
candidate.version(),
filename,
);
} else {
debug!(
"Selecting: {}=={} ({})",
candidate.name(),
candidate.version(),
filename,
);
}
// We want to return a package pinned to a specific version; but we _also_ want to
// store the exact file that we selected to satisfy that version.
pins.insert(&candidate, dist);
let version = candidate.version().clone();
// Emit a request to fetch the metadata for this version.
if self.index.distributions.register(candidate.package_id()) {
let request = match dist.for_resolution() {
ResolvedDistRef::Installable(dist) => Request::Dist(dist.clone()),
ResolvedDistRef::Installed(dist) => Request::Installed(dist.clone()),
};
request_sink.send(request).await?;
}
Ok(Some(ResolverVersion::Available(version)))
}
}
}
/// Given a candidate package and version, return its dependencies.
#[instrument(skip_all, fields(%package, %version))]
async fn get_dependencies_forking(
&self,
package: &PubGrubPackage,
version: &Version,
priorities: &mut PubGrubPriorities,
request_sink: &tokio::sync::mpsc::Sender<Request>,
) -> Result<Vec<Dependencies>, ResolveError> {
type Dep = (PubGrubPackage, Range<Version>, Option<MarkerTree>);
let deps: Vec<Dep> = match self
.get_dependencies(package, version, priorities, request_sink)
.await?
{
Dependencies::Available(deps) => deps,
Dependencies::Unavailable(err) => return Ok(vec![Dependencies::Unavailable(err)]),
};
// let mut by_grouping: FxHashMap<(&PackageName, &Option<ExtraName>, bool), Vec<&Dep>> =
// FxHashMap::default();
// let mut by_grouping: FxHashMap<&PackageName, Vec<&Dep>> = FxHashMap::default();
// This assumes that the version ranges are non-overlapping. When we do this for real,
// I believe it is true that we do NOT want to fork when there are overlapping version
// ranges.
let mut by_grouping: FxHashMap<&PackageName, FxHashMap<&Range<Version>, Vec<&Dep>>> =
FxHashMap::default();
for dep in deps.iter() {
let (ref pkg, ref range, _) = *dep;
let name = match *pkg {
PubGrubPackage::Root(_) | PubGrubPackage::Python(_) => unreachable!(),
PubGrubPackage::Package { ref name, .. } => name,
};
by_grouping
.entry(name)
.or_insert(FxHashMap::default())
.entry(range)
.or_insert(vec![])
.push(dep);
}
let mut forks: Vec<Vec<Dep>> = vec![vec![]];
for (_, mut groups) in by_grouping {
if groups.len() <= 1 {
for deps in groups.into_values() {
for fork in forks.iter_mut() {
fork.extend(deps.iter().map(|dep| (*dep).clone()));
}
}
} else {
let mut new_forks: Vec<Vec<Dep>> = vec![];
for deps in groups.into_values() {
let mut new_forks_for_group = forks.clone();
for fork in new_forks_for_group.iter_mut() {
fork.extend(deps.iter().map(|dep| (*dep).clone()));
}
new_forks.extend(new_forks_for_group);
}
forks = new_forks;
}
}
Ok(forks.into_iter().map(Dependencies::Available).collect())
}
/// Given a candidate package and version, return its dependencies.
#[instrument(skip_all, fields(%package, %version))]
async fn get_dependencies(
&self,
package: &PubGrubPackage,
version: &Version,
priorities: &mut PubGrubPriorities,
request_sink: &tokio::sync::mpsc::Sender<Request>,
) -> Result<Dependencies, ResolveError> {
match package {
PubGrubPackage::Root(_) => {
// Add the root requirements.
let constraints = PubGrubDependencies::from_requirements(
&self.requirements,
&self.constraints,
&self.overrides,
None,
None,
None,
&self.urls,
&self.locals,
self.markers,
);
let mut constraints = match constraints {
Ok(constraints) => constraints,
Err(err) => {
return Ok(Dependencies::Unavailable(uncapitalize(err.to_string())));
}
};
for (package, version, _) in constraints.iter() {
debug!("Adding direct dependency: {package}{version}");
// Emit a request to fetch the metadata for this package.
self.visit_package(package, priorities, request_sink)
.await?;
}
// Add a dependency on each editable.
for (editable, metadata) in self.editables.iter() {
constraints.push(
PubGrubPackage::from_package(metadata.name.clone(), None, None, &self.urls),
Range::singleton(metadata.version.clone()),
None,
);
for extra in &editable.extras {
constraints.push(
PubGrubPackage::from_package(
metadata.name.clone(),
Some(extra.clone()),
None,
&self.urls,
),
Range::singleton(metadata.version.clone()),
None,
);
}
}
Ok(Dependencies::Available(constraints.into()))
}
PubGrubPackage::Python(_) => Ok(Dependencies::Available(Vec::default())),
/*
PubGrubPackage::Package {
name: package_name,
extra,
marker: Some(marker),
url,
} => {
let package = PubGrubPackage::Package {
name: package_name.clone(),
extra: None,
marker: None,
url: url.clone(),
};
let version = Range::singleton(version.clone());
let constraint = (package, version, None);
Ok(Dependencies::Available(vec![constraint]))
}
*/
PubGrubPackage::Package {
name: package_name,
extra,
marker,
url,
} => {
// If we're excluding transitive dependencies, short-circuit.
if self.dependency_mode.is_direct() {
// If an extra is provided, wait for the metadata to be available, since it's
// still required for reporting diagnostics.
if extra.is_some() {
// Determine the distribution to lookup.
let dist = match url {
Some(url) => PubGrubDistribution::from_url(package_name, url),
None => PubGrubDistribution::from_registry(package_name, version),
};
let package_id = dist.package_id();
// Wait for the metadata to be available.
self.index
.distributions
.wait(&package_id)