Move conflicting dependencies into PubGrub

Cargo.toml

@@ -66,7 +66,7 @@ owo-colors = { version = "4.0.0" }
 petgraph = { version = "0.6.4" }
 platform-info = { version = "2.0.2" }
 plist = { version = "1.6.0" }
-pubgrub = { git = "https://github.com/zanieb/pubgrub", rev = "9b6d89cb8a0c7902815c8b2ae99106ba322ffb14" }
+pubgrub = { git = "https://github.com/zanieb/pubgrub", rev = "5d0270cc2932ab233bb7f66a09fb0764fed7154e" }
 pyo3 = { version = "0.20.2" }
 pyo3-log = { version = "0.9.0"}
 pyproject-toml = { version = "0.10.0" }

crates/uv-dev/src/resolve_cli.rs

@@ -105,7 +105,7 @@ pub(crate) async fn resolve_cli(args: ResolveCliArgs) -> Result<()> {
         &flat_index,
         &index,
         &build_dispatch,
-    );
+    )?;
     let resolution_graph = resolver.resolve().await.with_context(|| {
         format!(
             "No solution found when resolving: {}",

crates/uv-dispatch/src/lib.rs

@@ -121,7 +121,7 @@ impl<'a> BuildContext for BuildDispatch<'a> {
             self.flat_index,
             self.index,
             self,
-        );
+        )?;
         let graph = resolver.resolve().await.with_context(|| {
             format!(
                 "No solution found when resolving: {}",

crates/uv-resolver/src/constraints.rs

@@ -0,0 +1,30 @@
+use std::hash::BuildHasherDefault;
+
+use rustc_hash::FxHashMap;
+
+use pep508_rs::Requirement;
+use uv_normalize::PackageName;
+
+/// A set of constraints for a set of requirements.
+#[derive(Debug, Default, Clone)]
+pub(crate) struct Constraints(FxHashMap<PackageName, Vec<Requirement>>);
+
+impl Constraints {
+    /// Create a new set of constraints from a set of requirements.
+    pub(crate) fn from_requirements(requirements: Vec<Requirement>) -> Self {
+        let mut constraints: FxHashMap<PackageName, Vec<Requirement>> =
+            FxHashMap::with_capacity_and_hasher(requirements.len(), BuildHasherDefault::default());
+        for requirement in requirements {
+            constraints
+                .entry(requirement.name.clone())
+                .or_default()
+                .push(requirement);
+        }
+        Self(constraints)
+    }
+
+    /// Get the constraints for a package.
+    pub(crate) fn get(&self, name: &PackageName) -> Option<&Vec<Requirement>> {
+        self.0.get(name)
+    }
+}

crates/uv-resolver/src/editables.rs

@@ -0,0 +1,33 @@
+use std::hash::BuildHasherDefault;
+
+use rustc_hash::FxHashMap;
+
+use distribution_types::LocalEditable;
+use pypi_types::Metadata21;
+use uv_normalize::PackageName;
+
+/// A set of editable packages, indexed by package name.
+#[derive(Debug, Default, Clone)]
+pub(crate) struct Editables(FxHashMap<PackageName, (LocalEditable, Metadata21)>);
+
+impl Editables {
+    /// Create a new set of editables from a set of requirements.
+    pub(crate) fn from_requirements(requirements: Vec<(LocalEditable, Metadata21)>) -> Self {
+        let mut editables =
+            FxHashMap::with_capacity_and_hasher(requirements.len(), BuildHasherDefault::default());
+        for (editable_requirement, metadata) in requirements {
+            editables.insert(metadata.name.clone(), (editable_requirement, metadata));
+        }
+        Self(editables)
+    }
+
+    /// Get the editable for a package.
+    pub(crate) fn get(&self, name: &PackageName) -> Option<&(LocalEditable, Metadata21)> {
+        self.0.get(name)
+    }
+
+    /// Iterate over all editables.
+    pub(crate) fn iter(&self) -> impl Iterator<Item = &(LocalEditable, Metadata21)> {
+        self.0.values()
+    }
+}

crates/uv-resolver/src/error.rs

@@ -7,7 +7,6 @@ use indexmap::IndexMap;
 use pubgrub::range::Range;
 use pubgrub::report::{DefaultStringReporter, DerivationTree, Reporter};
 use rustc_hash::FxHashMap;
-use url::Url;
 
 use distribution_types::{BuiltDist, IndexLocations, PathBuiltDist, PathSourceDist, SourceDist};
 use once_map::OnceMap;
@@ -53,7 +52,10 @@ pub enum ResolveError {
     ConflictingVersions(String, String),
 
     #[error("Package `{0}` attempted to resolve via URL: {1}. URL dependencies must be expressed as direct requirements or constraints. Consider adding `{0} @ {1}` to your dependencies or constraints file.")]
-    DisallowedUrl(PackageName, Url),
+    DisallowedUrl(PackageName, String),
+
+    #[error("There are conflicting editable requirements for package `{0}`:\n- {1}\n- {2}")]
+    ConflictingEditables(PackageName, String, String),
 
     #[error(transparent)]
     DistributionType(#[from] distribution_types::Error),

crates/uv-resolver/src/lib.rs

@@ -12,7 +12,9 @@ pub use resolver::{
 };
 
 mod candidate_selector;
+mod constraints;
 mod dependency_mode;
+mod editables;
 mod error;
 mod finder;
 mod manifest;

crates/uv-resolver/src/overrides.rs

@@ -1,6 +1,6 @@
-use itertools::Either;
 use std::hash::BuildHasherDefault;
 
+use itertools::Either;
 use rustc_hash::FxHashMap;
 
 use pep508_rs::Requirement;