diff --git a/crates/uv-resolver/src/resolution/output.rs b/crates/uv-resolver/src/resolution/output.rs
index dbcb0103f5c64..fb2d1c747267a 100644
--- a/crates/uv-resolver/src/resolution/output.rs
+++ b/crates/uv-resolver/src/resolution/output.rs
@@ -190,7 +190,7 @@ impl ResolverOutput {
         graph.retain_nodes(|graph, node| !graph[node].marker().is_false());
 
         if matches!(resolution_strategy, ResolutionStrategy::Lowest) {
-            report_missing_lower_bounds(&graph, &mut diagnostics);
+            report_missing_lower_bounds(&graph, &mut diagnostics, constraints, overrides);
         }
 
         let output = Self {
@@ -879,6 +879,8 @@ impl From<ResolverOutput> for uv_distribution_types::Resolution {
 fn report_missing_lower_bounds(
     graph: &Graph<ResolutionGraphNode, UniversalMarker>,
     diagnostics: &mut Vec<ResolutionDiagnostic>,
+    constraints: &Constraints,
+    overrides: &Overrides,
 ) {
     for node_index in graph.node_indices() {
         let ResolutionGraphNode::Dist(dist) = graph.node_weight(node_index).unwrap() else {
@@ -892,7 +894,8 @@ fn report_missing_lower_bounds(
             // have to drop.
             continue;
         }
-        if !has_lower_bound(node_index, dist.name(), graph) {
+
+        if !has_lower_bound(node_index, dist.name(), graph, constraints, overrides) {
             diagnostics.push(ResolutionDiagnostic::MissingLowerBound {
                 package_name: dist.name().clone(),
             });
@@ -905,6 +908,8 @@ fn has_lower_bound(
     node_index: NodeIndex,
     package_name: &PackageName,
     graph: &Graph<ResolutionGraphNode, UniversalMarker>,
+    constraints: &Constraints,
+    overrides: &Overrides,
 ) -> bool {
     for neighbor_index in graph.neighbors_directed(node_index, Direction::Incoming) {
         let neighbor_dist = match graph.node_weight(neighbor_index).unwrap() {
@@ -931,7 +936,10 @@ fn has_lower_bound(
         for requirement in metadata
             .requires_dist
             .iter()
+            // These bounds sources are missing from the graph.
             .chain(metadata.dependency_groups.values().flatten())
+            .chain(constraints.requirements())
+            .chain(overrides.requirements())
         {
             if requirement.name != *package_name {
                 continue;
diff --git a/crates/uv-resolver/src/resolver/mod.rs b/crates/uv-resolver/src/resolver/mod.rs
index 2b252ed6f8c45..0ccc1cdaae324 100644
--- a/crates/uv-resolver/src/resolver/mod.rs
+++ b/crates/uv-resolver/src/resolver/mod.rs
@@ -2277,11 +2277,11 @@ impl ForkState {
         for_version: &Version,
         urls: &Urls,
         indexes: &Indexes,
-        mut dependencies: Vec<PubGrubDependency>,
+        dependencies: Vec<PubGrubDependency>,
         git: &GitResolver,
         resolution_strategy: &ResolutionStrategy,
     ) -> Result<(), ResolveError> {
-        for dependency in &mut dependencies {
+        for dependency in &dependencies {
             let PubGrubDependency {
                 package,
                 version,
@@ -2313,6 +2313,22 @@ impl ForkState {
                 // A dependency from the root package or requirements.txt.
                 debug!("Adding direct dependency: {package}{version}");
 
+                let name = package.name_no_root().unwrap();
+
+                // Catch cases where we pass a package once by name with extras and then once as
+                // URL for the specific distribution.
+                has_url = has_url
+                    || dependencies
+                        .iter()
+                        .filter(|other_dep| *other_dep != dependency)
+                        .filter(|other_dep| {
+                            other_dep
+                                .package
+                                .name()
+                                .is_some_and(|other_name| other_name == name)
+                        })
+                        .any(|other_dep| other_dep.url.is_some());
+
                 // Warn the user if a direct dependency lacks a lower bound in `--lowest` resolution.
                 let missing_lower_bound = version
                     .bounding_range()
@@ -2327,7 +2343,6 @@ impl ForkState {
                         "The direct dependency `{name}` is unpinned. \
                         Consider setting a lower bound when using `--resolution lowest` \
                         to avoid using outdated versions.",
-                        name = package.name_no_root().unwrap(),
                     );
                 }
             }
diff --git a/crates/uv/tests/it/lock.rs b/crates/uv/tests/it/lock.rs
index 190e338ed1df1..7ed90cb0673b8 100644
--- a/crates/uv/tests/it/lock.rs
+++ b/crates/uv/tests/it/lock.rs
@@ -19009,3 +19009,47 @@ fn lock_recursive_extra() -> Result<()> {
 
     Ok(())
 }
+
+/// Don't show an unpinned lower bound warning if the package was provided both by name and by URL,
+/// or if the package was part of a constraints files.
+///
+/// See <https://github.com/astral-sh/uv/issues/8155>, the original example was:
+/// ```
+/// uv pip install dist/pymatgen-2024.10.3.tar.gz pymatgen[ci,optional] --resolution=lowest
+/// ```
+#[test]
+fn no_lowest_warning_with_name_and_url() -> Result<()> {
+    let context = TestContext::new("3.12");
+
+    let pyproject_toml = context.temp_dir.child("pyproject.toml");
+    pyproject_toml.write_str(
+        r#"
+        [project]
+        name = "project"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = [
+            "anyio[trio]",
+            "anyio @ https://files.pythonhosted.org/packages/e6/e3/c4c8d473d6780ef1853d630d581f70d655b4f8d7553c6997958c283039a2/anyio-4.4.0.tar.gz"
+        ]
+
+        [tool.uv]
+        constraint-dependencies = [
+            "sortedcontainers==2.4.0",
+            "outcome==1.3.0.post0",
+            "pycparser==2.20",
+        ]
+        "#,
+    )?;
+
+    uv_snapshot!(context.filters(), context.lock(), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 10 packages in [TIME]
+    "###);
+
+    Ok(())
+}