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Use a single mutable preferences for forks (#4690)

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## Summary

Avoids a quadratic loop.

See: https://github.com/astral-sh/uv/pull/4662.
This commit is contained in:
Charlie Marsh 2024-07-01 08:47:28 -04:00 • committed by GitHub
parent 1557ad1b3c
commit 977a5c8835
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GPG key ID: B5690EEEBB952194
1 changed files with 10 additions and 16 deletions
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26
crates/uv-resolver/src/resolver/mod.rs
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@ -324,8 +324,8 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
priorities: PubGrubPriorities::default(),
added_dependencies: FxHashMap::default(),
markers: MarkerTree::And(vec![]),
preferences: self.preferences.clone(),
};
let mut preferences = self.preferences.clone();
let mut forked_states = vec![state];
let mut resolutions = vec![];
@ -379,14 +379,10 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
let resolution = state.into_resolution();
// Walk over the selected versions, and mark them as preferences.
for state in &mut forked_states {
for (package, versions) in &resolution.packages {
if let Entry::Vacant(entry) =
state.preferences.entry(package.name.clone())
{
if let Some(version) = versions.iter().next() {
entry.insert(version.clone().into());
}
for (package, versions) in &resolution.packages {
if let Entry::Vacant(entry) = preferences.entry(package.name.clone()) {
if let Some(version) = versions.iter().next() {
entry.insert(version.clone().into());
}
}
}
@ -428,7 +424,7 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
&state.next,
term_intersection.unwrap_positive(),
&mut state.pins,
&state.preferences,
&preferences,
&state.fork_urls,
visited,
&request_sink,
@ -730,7 +726,7 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
package: &PubGrubPackage,
range: &Range<Version>,
pins: &mut FilePins,
fork_preferences: &Preferences,
preferences: &Preferences,
fork_urls: &ForkUrls,
visited: &mut FxHashSet<PackageName>,
request_sink: &Sender<Request>,
@ -758,7 +754,7 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
name,
range,
package,
fork_preferences,
preferences,
pins,
visited,
request_sink,
@ -869,7 +865,7 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
name: &PackageName,
range: &Range<Version>,
package: &PubGrubPackage,
fork_preferences: &Preferences,
preferences: &Preferences,
pins: &mut FilePins,
visited: &mut FxHashSet<PackageName>,
request_sink: &Sender<Request>,
@ -908,7 +904,7 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
name,
range,
version_maps,
fork_preferences,
preferences,
&self.installed_packages,
&self.exclusions,
) else {
@ -1728,8 +1724,6 @@ struct SolveState {
/// that the marker expression that provoked the fork is true), then that
/// dependency is completely ignored.
markers: MarkerTree,
/// The preferences to respect for the fork.
preferences: Preferences,
}
impl SolveState {