diff --git a/crates/uv-bench/benches/uv.rs b/crates/uv-bench/benches/uv.rs
index 271319dd5..ba52d2c90 100644
--- a/crates/uv-bench/benches/uv.rs
+++ b/crates/uv-bench/benches/uv.rs
@@ -97,7 +97,7 @@ mod resolver {
     use uv_pep440::Version;
     use uv_pep508::{MarkerEnvironment, MarkerEnvironmentBuilder};
     use uv_platform_tags::{Arch, Os, Platform, Tags};
-    use uv_pypi_types::{ConflictingGroupList, ResolverMarkerEnvironment};
+    use uv_pypi_types::{Conflicts, ResolverMarkerEnvironment};
     use uv_python::Interpreter;
     use uv_resolver::{
         FlatIndex, InMemoryIndex, Manifest, OptionsBuilder, PythonRequirement, RequiresPython,
@@ -163,7 +163,7 @@ mod resolver {
         let options = OptionsBuilder::new().exclude_newer(exclude_newer).build();
         let sources = SourceStrategy::default();
         let dependency_metadata = DependencyMetadata::default();
-        let conflicting_groups = ConflictingGroupList::empty();
+        let conflicting_groups = Conflicts::empty();
 
         let python_requirement = if universal {
             PythonRequirement::from_requires_python(
diff --git a/crates/uv-dispatch/src/lib.rs b/crates/uv-dispatch/src/lib.rs
index 18cf3e3d7..28c0a9629 100644
--- a/crates/uv-dispatch/src/lib.rs
+++ b/crates/uv-dispatch/src/lib.rs
@@ -26,7 +26,7 @@ use uv_distribution_types::{
 };
 use uv_git::GitResolver;
 use uv_installer::{Installer, Plan, Planner, Preparer, SitePackages};
-use uv_pypi_types::{ConflictingGroupList, Requirement};
+use uv_pypi_types::{Conflicts, Requirement};
 use uv_python::{Interpreter, PythonEnvironment};
 use uv_resolver::{
     ExcludeNewer, FlatIndex, Flexibility, InMemoryIndex, Manifest, OptionsBuilder,
@@ -188,7 +188,7 @@ impl<'a> BuildContext for BuildDispatch<'a> {
             ResolverEnvironment::specific(marker_env),
             // Conflicting groups only make sense when doing
             // universal resolution.
-            ConflictingGroupList::empty(),
+            Conflicts::empty(),
             Some(tags),
             self.flat_index,
             self.index,
diff --git a/crates/uv-pypi-types/src/conflicts.rs b/crates/uv-pypi-types/src/conflicts.rs
index 3002d33a9..f735a8cdf 100644
--- a/crates/uv-pypi-types/src/conflicts.rs
+++ b/crates/uv-pypi-types/src/conflicts.rs
@@ -8,104 +8,104 @@ use uv_normalize::{ExtraName, PackageName};
 #[derive(
     Debug, Default, Clone, Eq, PartialEq, serde::Deserialize, serde::Serialize, schemars::JsonSchema,
 )]
-pub struct ConflictingGroupList(Vec<ConflictingGroups>);
+pub struct Conflicts(Vec<ConflictSet>);
 
-impl ConflictingGroupList {
+impl Conflicts {
     /// Returns no conflicting groups.
     ///
     /// This results in no effect on resolution.
-    pub fn empty() -> ConflictingGroupList {
-        ConflictingGroupList::default()
+    pub fn empty() -> Conflicts {
+        Conflicts::default()
     }
 
-    /// Push a set of conflicting groups.
-    pub fn push(&mut self, groups: ConflictingGroups) {
-        self.0.push(groups);
+    /// Push a single set of conflicts.
+    pub fn push(&mut self, set: ConflictSet) {
+        self.0.push(set);
     }
 
-    /// Returns an iterator over all sets of conflicting groups.
-    pub fn iter(&self) -> impl Iterator<Item = &'_ ConflictingGroups> + '_ {
+    /// Returns an iterator over all sets of conflicting sets.
+    pub fn iter(&self) -> impl Iterator<Item = &'_ ConflictSet> + '_ {
         self.0.iter()
     }
 
-    /// Returns true if this conflicting group list contains any conflicting
-    /// group set that contains the given package and extra name pair.
+    /// Returns true if these conflicts contain any set that contains the given
+    /// package and extra name pair.
     pub fn contains(&self, package: &PackageName, extra: &ExtraName) -> bool {
         self.iter().any(|groups| groups.contains(package, extra))
     }
 
-    /// Returns true if this set of conflicting groups is empty.
+    /// Returns true if there are no conflicts.
     pub fn is_empty(&self) -> bool {
         self.0.is_empty()
     }
 
-    /// Appends the given list to this one. This drains all elements
-    /// from the list given, such that after this call, it is empty.
-    pub fn append(&mut self, other: &mut ConflictingGroupList) {
+    /// Appends the given conflicts to this one. This drains all sets from the
+    /// conflicts given, such that after this call, it is empty.
+    pub fn append(&mut self, other: &mut Conflicts) {
         self.0.append(&mut other.0);
     }
 }
 
 /// A single set of package-extra pairs that conflict with one another.
 ///
-/// Within each set of conflicting groups, the resolver should isolate
-/// the requirements corresponding to each extra from the requirements of
-/// other extras in this set. That is, the resolver should put each set of
-/// requirements in a different fork.
+/// Within each set of conflicts, the resolver should isolate the requirements
+/// corresponding to each extra from the requirements of other extras in
+/// this set. That is, the resolver should put each set of requirements in a
+/// different fork.
 ///
-/// A `TryFrom<Vec<ConflictingGroup>>` impl may be used to build a set
-/// from a sequence. Note though that at least 2 groups are required.
+/// A `TryFrom<Vec<ConflictItem>>` impl may be used to build a set from a
+/// sequence. Note though that at least 2 items are required.
 #[derive(Debug, Default, Clone, Eq, PartialEq, serde::Serialize, schemars::JsonSchema)]
-pub struct ConflictingGroups(Vec<ConflictingGroup>);
+pub struct ConflictSet(Vec<ConflictItem>);
 
-impl ConflictingGroups {
-    /// Create a pair of groups that conflict with one another.
-    pub fn pair(group1: ConflictingGroup, group2: ConflictingGroup) -> ConflictingGroups {
-        ConflictingGroups(vec![group1, group2])
+impl ConflictSet {
+    /// Create a pair of items that conflict with one another.
+    pub fn pair(item1: ConflictItem, item2: ConflictItem) -> ConflictSet {
+        ConflictSet(vec![item1, item2])
     }
 
-    /// Add a new conflicting group to this set.
-    pub fn push(&mut self, group: ConflictingGroup) {
-        self.0.push(group);
+    /// Add a new conflicting item to this set.
+    pub fn push(&mut self, item: ConflictItem) {
+        self.0.push(item);
     }
 
-    /// Returns an iterator over all conflicting groups.
-    pub fn iter(&self) -> impl Iterator<Item = &'_ ConflictingGroup> + '_ {
+    /// Returns an iterator over all conflicting items.
+    pub fn iter(&self) -> impl Iterator<Item = &'_ ConflictItem> + '_ {
         self.0.iter()
     }
 
-    /// Returns true if this conflicting group contains the given
-    /// package and extra name pair.
+    /// Returns true if this conflicting item contains the given package and
+    /// extra name pair.
     pub fn contains(&self, package: &PackageName, extra: &ExtraName) -> bool {
         self.iter()
             .any(|group| group.package() == package && group.extra() == extra)
     }
 }
 
-impl<'de> serde::Deserialize<'de> for ConflictingGroups {
-    fn deserialize<D>(deserializer: D) -> Result<ConflictingGroups, D::Error>
+impl<'de> serde::Deserialize<'de> for ConflictSet {
+    fn deserialize<D>(deserializer: D) -> Result<ConflictSet, D::Error>
     where
         D: serde::Deserializer<'de>,
     {
-        let groups = Vec::<ConflictingGroup>::deserialize(deserializer)?;
+        let groups = Vec::<ConflictItem>::deserialize(deserializer)?;
         Self::try_from(groups).map_err(serde::de::Error::custom)
     }
 }
 
-impl TryFrom<Vec<ConflictingGroup>> for ConflictingGroups {
-    type Error = ConflictingGroupError;
+impl TryFrom<Vec<ConflictItem>> for ConflictSet {
+    type Error = ConflictError;
 
-    fn try_from(groups: Vec<ConflictingGroup>) -> Result<ConflictingGroups, ConflictingGroupError> {
-        match groups.len() {
-            0 => return Err(ConflictingGroupError::ZeroGroups),
-            1 => return Err(ConflictingGroupError::OneGroup),
+    fn try_from(items: Vec<ConflictItem>) -> Result<ConflictSet, ConflictError> {
+        match items.len() {
+            0 => return Err(ConflictError::ZeroItems),
+            1 => return Err(ConflictError::OneItem),
             _ => {}
         }
-        Ok(ConflictingGroups(groups))
+        Ok(ConflictSet(items))
     }
 }
 
-/// A single item in a set conflicting groups.
+/// A single item in a conflicting set.
 ///
 /// Each item is a pair of a package and a corresponding extra name for that
 /// package.
@@ -122,99 +122,99 @@ impl TryFrom<Vec<ConflictingGroup>> for ConflictingGroups {
     serde::Serialize,
     schemars::JsonSchema,
 )]
-pub struct ConflictingGroup {
+pub struct ConflictItem {
     package: PackageName,
     extra: ExtraName,
 }
 
-impl ConflictingGroup {
-    /// Returns the package name of this conflicting group.
+impl ConflictItem {
+    /// Returns the package name of this conflicting item.
     pub fn package(&self) -> &PackageName {
         &self.package
     }
 
-    /// Returns the extra name of this conflicting group.
+    /// Returns the extra name of this conflicting item.
     pub fn extra(&self) -> &ExtraName {
         &self.extra
     }
 
-    /// Returns this group as a new type with its fields borrowed.
-    pub fn as_ref(&self) -> ConflictingGroupRef<'_> {
-        ConflictingGroupRef {
+    /// Returns this item as a new type with its fields borrowed.
+    pub fn as_ref(&self) -> ConflictItemRef<'_> {
+        ConflictItemRef {
             package: self.package(),
             extra: self.extra(),
         }
     }
 }
 
-impl From<(PackageName, ExtraName)> for ConflictingGroup {
-    fn from((package, extra): (PackageName, ExtraName)) -> ConflictingGroup {
-        ConflictingGroup { package, extra }
+impl From<(PackageName, ExtraName)> for ConflictItem {
+    fn from((package, extra): (PackageName, ExtraName)) -> ConflictItem {
+        ConflictItem { package, extra }
     }
 }
 
-/// A single item in a set conflicting groups, by reference.
+/// A single item in a conflicting set, by reference.
 ///
 /// Each item is a pair of a package and a corresponding extra name for that
 /// package.
 #[derive(Debug, Clone, Copy, Eq, Hash, PartialEq, PartialOrd, Ord)]
-pub struct ConflictingGroupRef<'a> {
+pub struct ConflictItemRef<'a> {
     package: &'a PackageName,
     extra: &'a ExtraName,
 }
 
-impl<'a> ConflictingGroupRef<'a> {
-    /// Returns the package name of this conflicting group.
+impl<'a> ConflictItemRef<'a> {
+    /// Returns the package name of this conflicting item.
     pub fn package(&self) -> &'a PackageName {
         self.package
     }
 
-    /// Returns the extra name of this conflicting group.
+    /// Returns the extra name of this conflicting item.
     pub fn extra(&self) -> &'a ExtraName {
         self.extra
     }
 
-    /// Converts this borrowed conflicting group to its owned variant.
-    pub fn to_owned(&self) -> ConflictingGroup {
-        ConflictingGroup {
+    /// Converts this borrowed conflicting item to its owned variant.
+    pub fn to_owned(&self) -> ConflictItem {
+        ConflictItem {
             package: self.package().clone(),
             extra: self.extra().clone(),
         }
     }
 }
 
-impl<'a> From<(&'a PackageName, &'a ExtraName)> for ConflictingGroupRef<'a> {
-    fn from((package, extra): (&'a PackageName, &'a ExtraName)) -> ConflictingGroupRef<'a> {
-        ConflictingGroupRef { package, extra }
+impl<'a> From<(&'a PackageName, &'a ExtraName)> for ConflictItemRef<'a> {
+    fn from((package, extra): (&'a PackageName, &'a ExtraName)) -> ConflictItemRef<'a> {
+        ConflictItemRef { package, extra }
     }
 }
 
-/// An error that occurs when the given conflicting groups are invalid somehow.
+/// An error that occurs when the given conflicting set is invalid somehow.
 #[derive(Debug, thiserror::Error)]
-pub enum ConflictingGroupError {
-    /// An error for when there are zero conflicting groups.
+pub enum ConflictError {
+    /// An error for when there are zero conflicting items.
     #[error("Each set of conflicting groups must have at least two entries, but found none")]
-    ZeroGroups,
-    /// An error for when there is one conflicting group.
+    ZeroItems,
+    /// An error for when there is one conflicting items.
     #[error("Each set of conflicting groups must have at least two entries, but found only one")]
-    OneGroup,
+    OneItem,
 }
 
-/// Like [`ConflictingGroupList`], but for deserialization in `pyproject.toml`.
+/// Like [`Conflicts`], but for deserialization in `pyproject.toml`.
 ///
 /// The schema format is different from the in-memory format. Specifically, the
 /// schema format does not allow specifying the package name (or will make it
 /// optional in the future), where as the in-memory format needs the package
 /// name.
 ///
-/// N.B. `ConflictingGroupList` is still used for (de)serialization.
-/// Specifically, in the lock file, where the package name is required.
+/// N.B. `Conflicts` is still used for (de)serialization. Specifically, in the
+/// lock file, where the package name is required.
 #[derive(
     Debug, Default, Clone, Eq, PartialEq, serde::Deserialize, serde::Serialize, schemars::JsonSchema,
 )]
-pub struct SchemaConflictingGroupList(Vec<SchemaConflictingGroups>);
+pub struct SchemaConflicts(Vec<SchemaConflictSet>);
 
-impl SchemaConflictingGroupList {
+impl SchemaConflicts {
     /// Convert the public schema "conflicting" type to our internal fully
     /// resolved type. Effectively, this pairs the corresponding package name
     /// with each conflict.
@@ -222,34 +222,34 @@ impl SchemaConflictingGroupList {
     /// If a conflict has an explicit package name (written by the end user),
     /// then that takes precedence over the given package name, which is only
     /// used when there is no explicit package name written.
-    pub fn to_conflicting_with_package_name(&self, package: &PackageName) -> ConflictingGroupList {
-        let mut conflicting = ConflictingGroupList::empty();
+    pub fn to_conflicting_with_package_name(&self, package: &PackageName) -> Conflicts {
+        let mut conflicting = Conflicts::empty();
         for tool_uv_set in &self.0 {
             let mut set = vec![];
             for item in &tool_uv_set.0 {
                 let package = item.package.clone().unwrap_or_else(|| package.clone());
-                set.push(ConflictingGroup::from((package, item.extra.clone())));
+                set.push(ConflictItem::from((package, item.extra.clone())));
             }
             // OK because we guarantee that
             // `SchemaConflictingGroupList` is valid and there aren't
             // any new errors that can occur here.
-            let set = ConflictingGroups::try_from(set).unwrap();
+            let set = ConflictSet::try_from(set).unwrap();
             conflicting.push(set);
         }
         conflicting
     }
 }
 
-/// Like [`ConflictingGroups`], but for deserialization in `pyproject.toml`.
+/// Like [`ConflictSet`], but for deserialization in `pyproject.toml`.
 ///
 /// The schema format is different from the in-memory format. Specifically, the
 /// schema format does not allow specifying the package name (or will make it
 /// optional in the future), where as the in-memory format needs the package
 /// name.
 #[derive(Debug, Default, Clone, Eq, PartialEq, serde::Serialize, schemars::JsonSchema)]
-pub struct SchemaConflictingGroups(Vec<SchemaConflictingGroup>);
+pub struct SchemaConflictSet(Vec<SchemaConflictItem>);
 
-/// Like [`ConflictingGroup`], but for deserialization in `pyproject.toml`.
+/// Like [`ConflictItem`], but for deserialization in `pyproject.toml`.
 ///
 /// The schema format is different from the in-memory format. Specifically, the
 /// schema format does not allow specifying the package name (or will make it
@@ -269,33 +269,31 @@ pub struct SchemaConflictingGroups(Vec<SchemaConflictingGroup>);
     schemars::JsonSchema,
 )]
 #[serde(deny_unknown_fields)]
-pub struct SchemaConflictingGroup {
+pub struct SchemaConflictItem {
     #[serde(default)]
     package: Option<PackageName>,
     extra: ExtraName,
 }
 
-impl<'de> serde::Deserialize<'de> for SchemaConflictingGroups {
-    fn deserialize<D>(deserializer: D) -> Result<SchemaConflictingGroups, D::Error>
+impl<'de> serde::Deserialize<'de> for SchemaConflictSet {
+    fn deserialize<D>(deserializer: D) -> Result<SchemaConflictSet, D::Error>
     where
         D: serde::Deserializer<'de>,
     {
-        let items = Vec::<SchemaConflictingGroup>::deserialize(deserializer)?;
+        let items = Vec::<SchemaConflictItem>::deserialize(deserializer)?;
         Self::try_from(items).map_err(serde::de::Error::custom)
     }
 }
 
-impl TryFrom<Vec<SchemaConflictingGroup>> for SchemaConflictingGroups {
-    type Error = ConflictingGroupError;
+impl TryFrom<Vec<SchemaConflictItem>> for SchemaConflictSet {
+    type Error = ConflictError;
 
-    fn try_from(
-        items: Vec<SchemaConflictingGroup>,
-    ) -> Result<SchemaConflictingGroups, ConflictingGroupError> {
+    fn try_from(items: Vec<SchemaConflictItem>) -> Result<SchemaConflictSet, ConflictError> {
         match items.len() {
-            0 => return Err(ConflictingGroupError::ZeroGroups),
-            1 => return Err(ConflictingGroupError::OneGroup),
+            0 => return Err(ConflictError::ZeroItems),
+            1 => return Err(ConflictError::OneItem),
             _ => {}
         }
-        Ok(SchemaConflictingGroups(items))
+        Ok(SchemaConflictSet(items))
     }
 }
diff --git a/crates/uv-resolver/src/lock/mod.rs b/crates/uv-resolver/src/lock/mod.rs
index 0b49444e8..db6b9002d 100644
--- a/crates/uv-resolver/src/lock/mod.rs
+++ b/crates/uv-resolver/src/lock/mod.rs
@@ -40,8 +40,8 @@ use uv_pep440::Version;
 use uv_pep508::{split_scheme, MarkerEnvironment, MarkerTree, VerbatimUrl, VerbatimUrlError};
 use uv_platform_tags::{TagCompatibility, TagPriority, Tags};
 use uv_pypi_types::{
-    redact_credentials, ConflictingGroupList, HashDigest, ParsedArchiveUrl, ParsedGitUrl,
-    Requirement, RequirementSource,
+    redact_credentials, Conflicts, HashDigest, ParsedArchiveUrl, ParsedGitUrl, Requirement,
+    RequirementSource,
 };
 use uv_types::{BuildContext, HashStrategy};
 use uv_workspace::dependency_groups::DependencyGroupError;
@@ -82,7 +82,7 @@ pub struct Lock {
     /// forks in the lockfile so we can recreate them in subsequent resolutions.
     fork_markers: Vec<MarkerTree>,
     /// The conflicting groups/extras specified by the user.
-    conflicting_groups: ConflictingGroupList,
+    conflicting_groups: Conflicts,
     /// The list of supported environments specified by the user.
     supported_environments: Vec<MarkerTree>,
     /// The range of supported Python versions.
@@ -239,7 +239,7 @@ impl Lock {
             requires_python,
             options,
             ResolverManifest::default(),
-            ConflictingGroupList::empty(),
+            Conflicts::empty(),
             vec![],
             graph.fork_markers.clone(),
         )?;
@@ -315,7 +315,7 @@ impl Lock {
         requires_python: RequiresPython,
         options: ResolverOptions,
         manifest: ResolverManifest,
-        conflicting_groups: ConflictingGroupList,
+        conflicting_groups: Conflicts,
         supported_environments: Vec<MarkerTree>,
         fork_markers: Vec<MarkerTree>,
     ) -> Result<Self, LockError> {
@@ -485,7 +485,7 @@ impl Lock {
 
     /// Record the conflicting groups that were used to generate this lock.
     #[must_use]
-    pub fn with_conflicting_groups(mut self, conflicting_groups: ConflictingGroupList) -> Self {
+    pub fn with_conflicting_groups(mut self, conflicting_groups: Conflicts) -> Self {
         self.conflicting_groups = conflicting_groups;
         self
     }
@@ -550,7 +550,7 @@ impl Lock {
     }
 
     /// Returns the conflicting groups that were used to generate this lock.
-    pub fn conflicting_groups(&self) -> &ConflictingGroupList {
+    pub fn conflicting_groups(&self) -> &Conflicts {
         &self.conflicting_groups
     }
 
@@ -1384,7 +1384,7 @@ struct LockWire {
     #[serde(rename = "supported-markers", default)]
     supported_environments: Vec<SimplifiedMarkerTree>,
     #[serde(rename = "conflicting-groups", default)]
-    conflicting_groups: Option<ConflictingGroupList>,
+    conflicting_groups: Option<Conflicts>,
     /// We discard the lockfile if these options match.
     #[serde(default)]
     options: ResolverOptions,
@@ -1436,8 +1436,7 @@ impl TryFrom<LockWire> for Lock {
             wire.requires_python,
             wire.options,
             wire.manifest,
-            wire.conflicting_groups
-                .unwrap_or_else(ConflictingGroupList::empty),
+            wire.conflicting_groups.unwrap_or_else(Conflicts::empty),
             supported_environments,
             fork_markers,
         )?;
diff --git a/crates/uv-resolver/src/pubgrub/package.rs b/crates/uv-resolver/src/pubgrub/package.rs
index 9a6f4e4c2..ec8b4e026 100644
--- a/crates/uv-resolver/src/pubgrub/package.rs
+++ b/crates/uv-resolver/src/pubgrub/package.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use uv_normalize::{ExtraName, GroupName, PackageName};
 use uv_pep508::{MarkerTree, MarkerTreeContents};
-use uv_pypi_types::ConflictingGroupRef;
+use uv_pypi_types::ConflictItemRef;
 
 use crate::python_requirement::PythonRequirement;
 
@@ -190,10 +190,10 @@ impl PubGrubPackage {
     ///
     /// If this package can't possibly be classified as a conflicting group,
     /// then this returns `None`.
-    pub(crate) fn conflicting_group(&self) -> Option<ConflictingGroupRef<'_>> {
+    pub(crate) fn conflicting_group(&self) -> Option<ConflictItemRef<'_>> {
         let package = self.name_no_root()?;
         let extra = self.extra()?;
-        Some(ConflictingGroupRef::from((package, extra)))
+        Some(ConflictItemRef::from((package, extra)))
     }
 
     /// Returns `true` if this PubGrub package is a proxy package.
diff --git a/crates/uv-resolver/src/resolution/graph.rs b/crates/uv-resolver/src/resolution/graph.rs
index bee82a74b..a37a7756e 100644
--- a/crates/uv-resolver/src/resolution/graph.rs
+++ b/crates/uv-resolver/src/resolution/graph.rs
@@ -18,7 +18,7 @@ use uv_normalize::{ExtraName, GroupName, PackageName};
 use uv_pep440::{Version, VersionSpecifier};
 use uv_pep508::{MarkerEnvironment, MarkerTree, MarkerTreeKind};
 use uv_pypi_types::{
-    ConflictingGroupList, HashDigest, ParsedUrlError, Requirement, VerbatimParsedUrl, Yanked,
+    Conflicts, HashDigest, ParsedUrlError, Requirement, VerbatimParsedUrl, Yanked,
 };
 
 use crate::graph_ops::marker_reachability;
@@ -103,7 +103,7 @@ impl ResolutionGraph {
         index: &InMemoryIndex,
         git: &GitResolver,
         python: &PythonRequirement,
-        conflicting_groups: &ConflictingGroupList,
+        conflicting_groups: &Conflicts,
         resolution_strategy: &ResolutionStrategy,
         options: Options,
     ) -> Result<Self, ResolveError> {
diff --git a/crates/uv-resolver/src/resolver/environment.rs b/crates/uv-resolver/src/resolver/environment.rs
index debe163af..60f693b30 100644
--- a/crates/uv-resolver/src/resolver/environment.rs
+++ b/crates/uv-resolver/src/resolver/environment.rs
@@ -3,9 +3,7 @@ use std::sync::Arc;
 use rustc_hash::{FxHashMap, FxHashSet};
 use uv_normalize::{ExtraName, PackageName};
 use uv_pep508::{MarkerEnvironment, MarkerTree};
-use uv_pypi_types::{
-    ConflictingGroup, ConflictingGroupList, ConflictingGroupRef, ResolverMarkerEnvironment,
-};
+use uv_pypi_types::{ConflictItem, ConflictItemRef, Conflicts, ResolverMarkerEnvironment};
 
 use crate::pubgrub::{PubGrubDependency, PubGrubPackage};
 use crate::requires_python::RequiresPythonRange;
@@ -165,7 +163,7 @@ impl ResolverEnvironment {
 
     /// Returns true if the dependency represented by this forker may be
     /// included in the given resolver environment.
-    pub(crate) fn included_by_group(&self, group: ConflictingGroupRef<'_>) -> bool {
+    pub(crate) fn included_by_group(&self, group: ConflictItemRef<'_>) -> bool {
         match self.kind {
             Kind::Specific { .. } => true,
             Kind::Universal { ref exclude, .. } => !exclude
@@ -229,7 +227,7 @@ impl ResolverEnvironment {
     /// specific marker environment. i.e., "pip"-style resolution.
     pub(crate) fn exclude_by_group(
         &self,
-        groups: impl IntoIterator<Item = ConflictingGroup>,
+        groups: impl IntoIterator<Item = ConflictItem>,
     ) -> ResolverEnvironment {
         match self.kind {
             Kind::Specific { .. } => {
@@ -427,7 +425,7 @@ impl<'d> Forker<'d> {
     pub(crate) fn fork(
         &self,
         env: &ResolverEnvironment,
-        _conflicting_groups: &ConflictingGroupList,
+        _conflicting_groups: &Conflicts,
     ) -> Option<(Forker<'d>, Vec<ResolverEnvironment>)> {
         if !env.included_by_marker(&self.marker) {
             return None;
diff --git a/crates/uv-resolver/src/resolver/mod.rs b/crates/uv-resolver/src/resolver/mod.rs
index d7c131b8d..3db5a37d8 100644
--- a/crates/uv-resolver/src/resolver/mod.rs
+++ b/crates/uv-resolver/src/resolver/mod.rs
@@ -38,8 +38,7 @@ use uv_pep440::{release_specifiers_to_ranges, Version, MIN_VERSION};
 use uv_pep508::MarkerTree;
 use uv_platform_tags::Tags;
 use uv_pypi_types::{
-    ConflictingGroup, ConflictingGroupList, ConflictingGroupRef, Requirement, ResolutionMetadata,
-    VerbatimParsedUrl,
+    ConflictItem, ConflictItemRef, Conflicts, Requirement, ResolutionMetadata, VerbatimParsedUrl,
 };
 use uv_types::{BuildContext, HashStrategy, InstalledPackagesProvider};
 use uv_warnings::warn_user_once;
@@ -110,7 +109,7 @@ struct ResolverState<InstalledPackages: InstalledPackagesProvider> {
     hasher: HashStrategy,
     env: ResolverEnvironment,
     python_requirement: PythonRequirement,
-    conflicting_groups: ConflictingGroupList,
+    conflicting_groups: Conflicts,
     workspace_members: BTreeSet<PackageName>,
     selector: CandidateSelector,
     index: InMemoryIndex,
@@ -151,7 +150,7 @@ impl<'a, Context: BuildContext, InstalledPackages: InstalledPackagesProvider>
         options: Options,
         python_requirement: &'a PythonRequirement,
         env: ResolverEnvironment,
-        conflicting_groups: ConflictingGroupList,
+        conflicting_groups: Conflicts,
         tags: Option<&'a Tags>,
         flat_index: &'a FlatIndex,
         index: &'a InMemoryIndex,
@@ -199,7 +198,7 @@ impl<Provider: ResolverProvider, InstalledPackages: InstalledPackagesProvider>
         hasher: &HashStrategy,
         env: ResolverEnvironment,
         python_requirement: &PythonRequirement,
-        conflicting_groups: ConflictingGroupList,
+        conflicting_groups: Conflicts,
         index: &InMemoryIndex,
         git: &GitResolver,
         capabilities: &IndexCapabilities,
@@ -1631,7 +1630,7 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
                             return None;
                         }
                         if !env.included_by_group(
-                            ConflictingGroupRef::from((&requirement.name, source_extra)),
+                            ConflictItemRef::from((&requirement.name, source_extra)),
                         ) {
                             return None;
                         }
@@ -1724,7 +1723,7 @@ impl<InstalledPackages: InstalledPackagesProvider> ResolverState<InstalledPackag
                                         return None;
                                     }
                                     if !env.included_by_group(
-                                        ConflictingGroupRef::from((&requirement.name, source_extra)),
+                                        ConflictItemRef::from((&requirement.name, source_extra)),
                                     ) {
                                         return None;
                                     }
@@ -2695,7 +2694,7 @@ impl Dependencies {
         self,
         env: &ResolverEnvironment,
         python_requirement: &PythonRequirement,
-        conflicting_groups: &ConflictingGroupList,
+        conflicting_groups: &Conflicts,
     ) -> ForkedDependencies {
         let deps = match self {
             Dependencies::Available(deps) => deps,
@@ -2776,7 +2775,7 @@ impl Forks {
         name_to_deps: BTreeMap<PackageName, Vec<PubGrubDependency>>,
         env: &ResolverEnvironment,
         python_requirement: &PythonRequirement,
-        conflicting_groups: &ConflictingGroupList,
+        conflicting_groups: &Conflicts,
     ) -> Forks {
         let python_marker = python_requirement.to_marker_tree();
 
@@ -3016,7 +3015,7 @@ impl Fork {
 
     /// Returns true if any of the dependencies in this fork contain a
     /// dependency with the given package and extra values.
-    fn contains_conflicting_group(&self, group: ConflictingGroupRef<'_>) -> bool {
+    fn contains_conflicting_group(&self, group: ConflictItemRef<'_>) -> bool {
         self.conflicting_groups
             .get(group.package())
             .map(|set| set.contains(group.extra()))
@@ -3026,7 +3025,7 @@ impl Fork {
     /// Exclude the given groups from this fork.
     ///
     /// This removes all dependencies matching the given conflicting groups.
-    fn exclude(mut self, groups: impl IntoIterator<Item = ConflictingGroup>) -> Fork {
+    fn exclude(mut self, groups: impl IntoIterator<Item = ConflictItem>) -> Fork {
         self.env = self.env.exclude_by_group(groups);
         self.dependencies.retain(|dep| {
             let Some(conflicting_group) = dep.package.conflicting_group() else {
@@ -3114,10 +3113,7 @@ impl PartialOrd for Fork {
 /// depends on `c[x2]`. That's a conflict, but not easily detectable unless
 /// you reject either `c[x1]` or `c[x2]` on the grounds that `x1` and `x2` are
 /// conflicting and thus cannot be enabled unconditionally.
-fn find_conflicting_extra(
-    conflicting: &ConflictingGroupList,
-    reqs: &[Requirement],
-) -> Option<ResolveError> {
+fn find_conflicting_extra(conflicting: &Conflicts, reqs: &[Requirement]) -> Option<ResolveError> {
     for req in reqs {
         for extra in &req.extras {
             if conflicting.contains(&req.name, extra) {
diff --git a/crates/uv-settings/src/combine.rs b/crates/uv-settings/src/combine.rs
index f3cda5b9e..95c1597a4 100644
--- a/crates/uv-settings/src/combine.rs
+++ b/crates/uv-settings/src/combine.rs
@@ -8,7 +8,7 @@ use uv_configuration::{
 };
 use uv_distribution_types::{Index, IndexUrl, PipExtraIndex, PipFindLinks, PipIndex};
 use uv_install_wheel::linker::LinkMode;
-use uv_pypi_types::{SchemaConflictingGroupList, SupportedEnvironments};
+use uv_pypi_types::{SchemaConflicts, SupportedEnvironments};
 use uv_python::{PythonDownloads, PythonPreference, PythonVersion};
 use uv_resolver::{AnnotationStyle, ExcludeNewer, PrereleaseMode, ResolutionMode};
 
@@ -90,7 +90,7 @@ impl_combine_or!(PythonVersion);
 impl_combine_or!(ResolutionMode);
 impl_combine_or!(String);
 impl_combine_or!(SupportedEnvironments);
-impl_combine_or!(SchemaConflictingGroupList);
+impl_combine_or!(SchemaConflicts);
 impl_combine_or!(TargetTriple);
 impl_combine_or!(TrustedPublishing);
 impl_combine_or!(Url);
diff --git a/crates/uv-workspace/src/pyproject.rs b/crates/uv-workspace/src/pyproject.rs
index 33847edf4..7b31ac251 100644
--- a/crates/uv-workspace/src/pyproject.rs
+++ b/crates/uv-workspace/src/pyproject.rs
@@ -25,8 +25,7 @@ use uv_normalize::{ExtraName, GroupName, PackageName};
 use uv_pep440::{Version, VersionSpecifiers};
 use uv_pep508::MarkerTree;
 use uv_pypi_types::{
-    ConflictingGroupList, RequirementSource, SchemaConflictingGroupList, SupportedEnvironments,
-    VerbatimParsedUrl,
+    Conflicts, RequirementSource, SchemaConflicts, SupportedEnvironments, VerbatimParsedUrl,
 };
 
 #[derive(Error, Debug)]
@@ -103,8 +102,8 @@ impl PyProjectToml {
     }
 
     /// Returns the set of conflicts for the project.
-    pub fn conflicting_groups(&self) -> ConflictingGroupList {
-        let empty = ConflictingGroupList::empty();
+    pub fn conflicting_groups(&self) -> Conflicts {
+        let empty = Conflicts::empty();
         let Some(project) = self.project.as_ref() else {
             return empty;
         };
@@ -504,7 +503,7 @@ pub struct ToolUv {
         "#
     )]
     */
-    pub conflicting_groups: Option<SchemaConflictingGroupList>,
+    pub conflicting_groups: Option<SchemaConflicts>,
 }
 
 #[derive(Default, Debug, Clone, PartialEq, Eq)]
diff --git a/crates/uv-workspace/src/workspace.rs b/crates/uv-workspace/src/workspace.rs
index 9463ef01e..62c251750 100644
--- a/crates/uv-workspace/src/workspace.rs
+++ b/crates/uv-workspace/src/workspace.rs
@@ -11,7 +11,7 @@ use uv_distribution_types::Index;
 use uv_fs::{Simplified, CWD};
 use uv_normalize::{GroupName, PackageName, DEV_DEPENDENCIES};
 use uv_pep508::{MarkerTree, RequirementOrigin, VerbatimUrl};
-use uv_pypi_types::{ConflictingGroupList, Requirement, RequirementSource, SupportedEnvironments};
+use uv_pypi_types::{Conflicts, Requirement, RequirementSource, SupportedEnvironments};
 use uv_static::EnvVars;
 use uv_warnings::{warn_user, warn_user_once};
 
@@ -393,8 +393,8 @@ impl Workspace {
     }
 
     /// Returns the set of conflicts for the workspace.
-    pub fn conflicting_groups(&self) -> ConflictingGroupList {
-        let mut conflicting = ConflictingGroupList::empty();
+    pub fn conflicting_groups(&self) -> Conflicts {
+        let mut conflicting = Conflicts::empty();
         for member in self.packages.values() {
             conflicting.append(&mut member.pyproject_toml.conflicting_groups());
         }
diff --git a/crates/uv/src/commands/pip/compile.rs b/crates/uv/src/commands/pip/compile.rs
index f9f8f4e78..a96d92d5b 100644
--- a/crates/uv/src/commands/pip/compile.rs
+++ b/crates/uv/src/commands/pip/compile.rs
@@ -23,7 +23,7 @@ use uv_fs::Simplified;
 use uv_git::GitResolver;
 use uv_install_wheel::linker::LinkMode;
 use uv_normalize::PackageName;
-use uv_pypi_types::{ConflictingGroupList, Requirement, SupportedEnvironments};
+use uv_pypi_types::{Conflicts, Requirement, SupportedEnvironments};
 use uv_python::{
     EnvironmentPreference, PythonEnvironment, PythonInstallation, PythonPreference, PythonRequest,
     PythonVersion, VersionRequest,
@@ -54,7 +54,7 @@ pub(crate) async fn pip_compile(
     constraints_from_workspace: Vec<Requirement>,
     overrides_from_workspace: Vec<Requirement>,
     environments: SupportedEnvironments,
-    conflicting_groups: ConflictingGroupList,
+    conflicting_groups: Conflicts,
     extras: ExtrasSpecification,
     output_file: Option<&Path>,
     resolution_mode: ResolutionMode,
@@ -264,7 +264,7 @@ pub(crate) async fn pip_compile(
         (
             Some(tags),
             ResolverEnvironment::specific(marker_env),
-            ConflictingGroupList::empty(),
+            Conflicts::empty(),
         )
     };
 
diff --git a/crates/uv/src/commands/pip/install.rs b/crates/uv/src/commands/pip/install.rs
index 7f92d7c63..32eb9158f 100644
--- a/crates/uv/src/commands/pip/install.rs
+++ b/crates/uv/src/commands/pip/install.rs
@@ -20,7 +20,7 @@ use uv_fs::Simplified;
 use uv_install_wheel::linker::LinkMode;
 use uv_installer::{SatisfiesResult, SitePackages};
 use uv_pep508::PackageName;
-use uv_pypi_types::{ConflictingGroupList, Requirement};
+use uv_pypi_types::{Conflicts, Requirement};
 use uv_python::{
     EnvironmentPreference, Prefix, PythonEnvironment, PythonRequest, PythonVersion, Target,
 };
@@ -400,7 +400,7 @@ pub(crate) async fn pip_install(
         Some(&tags),
         ResolverEnvironment::specific(marker_env.clone()),
         python_requirement,
-        ConflictingGroupList::empty(),
+        Conflicts::empty(),
         &client,
         &flat_index,
         &state.index,
diff --git a/crates/uv/src/commands/pip/operations.rs b/crates/uv/src/commands/pip/operations.rs
index 02c112f32..d33e36876 100644
--- a/crates/uv/src/commands/pip/operations.rs
+++ b/crates/uv/src/commands/pip/operations.rs
@@ -29,7 +29,7 @@ use uv_install_wheel::linker::LinkMode;
 use uv_installer::{Plan, Planner, Preparer, SitePackages};
 use uv_normalize::{GroupName, PackageName};
 use uv_platform_tags::Tags;
-use uv_pypi_types::{ConflictingGroupList, ResolverMarkerEnvironment};
+use uv_pypi_types::{Conflicts, ResolverMarkerEnvironment};
 use uv_python::PythonEnvironment;
 use uv_requirements::{
     LookaheadResolver, NamedRequirementsResolver, RequirementsSource, RequirementsSpecification,
@@ -104,7 +104,7 @@ pub(crate) async fn resolve<InstalledPackages: InstalledPackagesProvider>(
     tags: Option<&Tags>,
     resolver_env: ResolverEnvironment,
     python_requirement: PythonRequirement,
-    conflicting_groups: ConflictingGroupList,
+    conflicting_groups: Conflicts,
     client: &RegistryClient,
     flat_index: &FlatIndex,
     index: &InMemoryIndex,
diff --git a/crates/uv/src/commands/pip/sync.rs b/crates/uv/src/commands/pip/sync.rs
index b5524adb3..a65bd1b9a 100644
--- a/crates/uv/src/commands/pip/sync.rs
+++ b/crates/uv/src/commands/pip/sync.rs
@@ -17,7 +17,7 @@ use uv_fs::Simplified;
 use uv_install_wheel::linker::LinkMode;
 use uv_installer::SitePackages;
 use uv_pep508::PackageName;
-use uv_pypi_types::ConflictingGroupList;
+use uv_pypi_types::Conflicts;
 use uv_python::{
     EnvironmentPreference, Prefix, PythonEnvironment, PythonRequest, PythonVersion, Target,
 };
@@ -345,7 +345,7 @@ pub(crate) async fn pip_sync(
         Some(&tags),
         ResolverEnvironment::specific(marker_env.clone()),
         python_requirement,
-        ConflictingGroupList::empty(),
+        Conflicts::empty(),
         &client,
         &flat_index,
         &state.index,
diff --git a/crates/uv/src/commands/project/mod.rs b/crates/uv/src/commands/project/mod.rs
index e2b68b192..6e309f8a6 100644
--- a/crates/uv/src/commands/project/mod.rs
+++ b/crates/uv/src/commands/project/mod.rs
@@ -22,7 +22,7 @@ use uv_installer::{SatisfiesResult, SitePackages};
 use uv_normalize::{ExtraName, GroupName, PackageName, DEV_DEPENDENCIES};
 use uv_pep440::{Version, VersionSpecifiers};
 use uv_pep508::MarkerTreeContents;
-use uv_pypi_types::{ConflictingGroupList, ConflictingGroups, Requirement};
+use uv_pypi_types::{ConflictSet, Conflicts, Requirement};
 use uv_python::{
     EnvironmentPreference, Interpreter, InvalidEnvironmentKind, PythonDownloads, PythonEnvironment,
     PythonInstallation, PythonPreference, PythonRequest, PythonVariant, PythonVersionFile,
@@ -90,7 +90,7 @@ pub(crate) enum ProjectError {
             .collect::<Vec<String>>()
             .join(", "),
     )]
-    ExtraIncompatibility(ConflictingGroups, Vec<ExtraName>),
+    ExtraIncompatibility(ConflictSet, Vec<ExtraName>),
 
     #[error("The requested interpreter resolved to Python {0}, which is incompatible with the project's Python requirement: `{1}`")]
     RequestedPythonProjectIncompatibility(Version, RequiresPython),
@@ -1108,7 +1108,7 @@ pub(crate) async fn resolve_environment<'a>(
         Some(tags),
         ResolverEnvironment::specific(marker_env),
         python_requirement,
-        ConflictingGroupList::empty(),
+        Conflicts::empty(),
         &client,
         &flat_index,
         &state.index,
@@ -1451,7 +1451,7 @@ pub(crate) async fn update_environment(
         Some(tags),
         ResolverEnvironment::specific(marker_env.clone()),
         python_requirement,
-        ConflictingGroupList::empty(),
+        Conflicts::empty(),
         &client,
         &flat_index,
         &state.index,
diff --git a/crates/uv/src/lib.rs b/crates/uv/src/lib.rs
index d81867e73..d59ac90c5 100644
--- a/crates/uv/src/lib.rs
+++ b/crates/uv/src/lib.rs
@@ -24,7 +24,7 @@ use uv_cli::{PythonCommand, PythonNamespace, ToolCommand, ToolNamespace, TopLeve
 #[cfg(feature = "self-update")]
 use uv_cli::{SelfCommand, SelfNamespace, SelfUpdateArgs};
 use uv_fs::CWD;
-use uv_pypi_types::ConflictingGroupList;
+use uv_pypi_types::Conflicts;
 use uv_requirements::RequirementsSource;
 use uv_scripts::{Pep723Item, Pep723Metadata, Pep723Script};
 use uv_settings::{Combine, FilesystemOptions, Options};
@@ -333,7 +333,7 @@ async fn run(mut cli: Cli) -> Result<ExitStatus> {
                 args.constraints_from_workspace,
                 args.overrides_from_workspace,
                 args.environments,
-                ConflictingGroupList::empty(),
+                Conflicts::empty(),
                 args.settings.extras,
                 args.settings.output_file.as_deref(),
                 args.settings.resolution,