Respect extra build requires when reading from wheel cache

crates/uv-dispatch/src/lib.rs

@@ -311,6 +311,7 @@ impl BuildContext for BuildDispatch<'_> {
             self.index_locations,
             self.config_settings,
             self.config_settings_package,
+            self.extra_build_dependencies(),
             self.cache(),
             venv,
             tags,
@@ -460,7 +461,7 @@ impl BuildContext for BuildDispatch<'_> {
             self.workspace_cache(),
             config_settings,
             self.build_isolation,
-            &self.extra_build_requires.extra_build_dependencies,
+            self.extra_build_dependencies(),
             &build_stack,
             build_kind,
             self.build_extra_env_vars.clone(),

crates/uv-distribution/src/index/built_wheel_index.rs

@@ -1,4 +1,5 @@
 use std::borrow::Cow;
+
 use uv_cache::{Cache, CacheBucket, CacheShard, WheelCache};
 use uv_cache_info::CacheInfo;
 use uv_cache_key::cache_digest;
@@ -9,6 +10,7 @@ use uv_distribution_types::{
 use uv_normalize::PackageName;
 use uv_platform_tags::Tags;
 use uv_types::HashStrategy;
+use uv_workspace::pyproject::ExtraBuildDependencies;
 
 use crate::Error;
 use crate::index::cached_wheel::CachedWheel;
@@ -22,6 +24,7 @@ pub struct BuiltWheelIndex<'a> {
     hasher: &'a HashStrategy,
     config_settings: &'a ConfigSettings,
     config_settings_package: &'a PackageConfigSettings,
+    extra_build_dependencies: &'a ExtraBuildDependencies,
 }
 
 impl<'a> BuiltWheelIndex<'a> {
@@ -32,13 +35,15 @@ impl<'a> BuiltWheelIndex<'a> {
         hasher: &'a HashStrategy,
         config_settings: &'a ConfigSettings,
         config_settings_package: &'a PackageConfigSettings,
+        extra_build_dependencies: &'a ExtraBuildDependencies,
     ) -> Self {
         Self {
             cache,
             tags,
             hasher,
             config_settings,
             config_settings_package,
+            extra_build_dependencies,
         }
     }
 
@@ -69,10 +74,11 @@ impl<'a> BuiltWheelIndex<'a> {
 
         // If there are build settings, we need to scope to a cache shard.
         let config_settings = self.config_settings_for(&source_dist.name);
-        let cache_shard = if config_settings.is_empty() {
+        let extra_build_deps = self.extra_build_dependencies_for(&source_dist.name);
+        let cache_shard = if config_settings.is_empty() && extra_build_deps.is_empty() {
             cache_shard
         } else {
-            cache_shard.shard(cache_digest(&config_settings))
+            cache_shard.shard(cache_digest(&(&config_settings, extra_build_deps)))
         };
 
         Ok(self.find(&cache_shard))
@@ -107,10 +113,11 @@ impl<'a> BuiltWheelIndex<'a> {
 
         // If there are build settings, we need to scope to a cache shard.
         let config_settings = self.config_settings_for(&source_dist.name);
-        let cache_shard = if config_settings.is_empty() {
+        let extra_build_deps = self.extra_build_dependencies_for(&source_dist.name);
+        let cache_shard = if config_settings.is_empty() && extra_build_deps.is_empty() {
             cache_shard
         } else {
-            cache_shard.shard(cache_digest(&config_settings))
+            cache_shard.shard(cache_digest(&(&config_settings, extra_build_deps)))
         };
 
         Ok(self
@@ -156,10 +163,11 @@ impl<'a> BuiltWheelIndex<'a> {
 
         // If there are build settings, we need to scope to a cache shard.
         let config_settings = self.config_settings_for(&source_dist.name);
-        let cache_shard = if config_settings.is_empty() {
+        let extra_build_deps = self.extra_build_dependencies_for(&source_dist.name);
+        let cache_shard = if config_settings.is_empty() && extra_build_deps.is_empty() {
             cache_shard
         } else {
-            cache_shard.shard(cache_digest(&config_settings))
+            cache_shard.shard(cache_digest(&(&config_settings, extra_build_deps)))
         };
 
         Ok(self
@@ -183,10 +191,11 @@ impl<'a> BuiltWheelIndex<'a> {
 
         // If there are build settings, we need to scope to a cache shard.
         let config_settings = self.config_settings_for(&source_dist.name);
-        let cache_shard = if config_settings.is_empty() {
+        let extra_build_deps = self.extra_build_dependencies_for(&source_dist.name);
+        let cache_shard = if config_settings.is_empty() && extra_build_deps.is_empty() {
             cache_shard
         } else {
-            cache_shard.shard(cache_digest(&config_settings))
+            cache_shard.shard(cache_digest(&(&config_settings, extra_build_deps)))
         };
 
         self.find(&cache_shard)
@@ -257,4 +266,15 @@ impl<'a> BuiltWheelIndex<'a> {
             Cow::Borrowed(self.config_settings)
         }
     }
+
+    /// Determine the extra build dependencies for the given package name.
+    fn extra_build_dependencies_for(
+        &self,
+        name: &PackageName,
+    ) -> &[uv_pep508::Requirement<uv_pypi_types::VerbatimParsedUrl>] {
+        self.extra_build_dependencies
+            .get(name)
+            .map(Vec::as_slice)
+            .unwrap_or(&[])
+    }
 }

crates/uv-distribution/src/source/mod.rs

@@ -413,7 +413,7 @@ impl<'a, T: BuildContext> SourceDistributionBuilder<'a, T> {
             self.build_context
                 .extra_build_dependencies()
                 .get(name)
-                .map(|v| v.as_slice())
+                .map(Vec::as_slice)
         })
         .unwrap_or(&[])
     }

crates/uv-installer/Cargo.toml

@@ -35,6 +35,7 @@ uv-redacted = { workspace = true }
 uv-static = { workspace = true }
 uv-types = { workspace = true }
 uv-warnings = { workspace = true }
+uv-workspace = { workspace = true }
 
 anyhow = { workspace = true }
 async-channel = { workspace = true }

crates/uv-installer/src/plan.rs

@@ -1,5 +1,6 @@
-use anyhow::{Result, bail};
 use std::sync::Arc;
+
+use anyhow::{Result, bail};
 use tracing::{debug, warn};
 
 use uv_cache::{Cache, CacheBucket, WheelCache};
@@ -17,6 +18,7 @@ use uv_platform_tags::Tags;
 use uv_pypi_types::VerbatimParsedUrl;
 use uv_python::PythonEnvironment;
 use uv_types::HashStrategy;
+use uv_workspace::pyproject::ExtraBuildDependencies;
 
 use crate::SitePackages;
 use crate::satisfies::RequirementSatisfaction;
@@ -53,6 +55,7 @@ impl<'a> Planner<'a> {
         index_locations: &IndexLocations,
         config_settings: &ConfigSettings,
         config_settings_package: &PackageConfigSettings,
+        extra_build_dependencies: &ExtraBuildDependencies,
         cache: &Cache,
         venv: &PythonEnvironment,
         tags: &Tags,
@@ -66,6 +69,7 @@ impl<'a> Planner<'a> {
             hasher,
             config_settings,
             config_settings_package,
+            extra_build_dependencies,
         );
 
         let mut cached = vec![];

crates/uv-types/src/traits.rs

@@ -19,6 +19,7 @@ use uv_git::GitResolver;
 use uv_pep508::PackageName;
 use uv_python::{Interpreter, PythonEnvironment};
 use uv_workspace::WorkspaceCache;
+use uv_workspace::pyproject::ExtraBuildDependencies;
 
 use crate::BuildArena;
 
@@ -104,7 +105,7 @@ pub trait BuildContext {
     fn workspace_cache(&self) -> &WorkspaceCache;
 
     /// Get the extra build dependencies.
-    fn extra_build_dependencies(&self) -> &uv_workspace::pyproject::ExtraBuildDependencies;
+    fn extra_build_dependencies(&self) -> &ExtraBuildDependencies;
 
     /// Resolve the given requirements into a ready-to-install set of package versions.
     fn resolve<'a>(

crates/uv/src/commands/pip/operations.rs

@@ -1,12 +1,13 @@
 //! Common operations shared across the `pip` API and subcommands.
 
-use anyhow::{Context, anyhow};
-use itertools::Itertools;
-use owo_colors::OwoColorize;
 use std::collections::{BTreeMap, BTreeSet, HashSet};
 use std::fmt::Write;
 use std::path::PathBuf;
 use std::sync::Arc;
+
+use anyhow::{Context, anyhow};
+use itertools::Itertools;
+use owo_colors::OwoColorize;
 use tracing::debug;
 
 use uv_cache::Cache;
@@ -468,6 +469,7 @@ pub(crate) async fn install(
             index_urls,
             config_settings,
             config_settings_package,
+            build_dispatch.extra_build_dependencies(),
             cache,
             venv,
             tags,

crates/uv/tests/it/sync.rs

@@ -1662,6 +1662,19 @@ fn sync_extra_build_dependencies() -> Result<()> {
      + child==0.1.0 (from file://[TEMP_DIR]/child)
     ");
 
+    context.venv().arg("--clear").assert().success();
+    uv_snapshot!(context.filters(), context.sync(), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    warning: The `extra-build-dependencies` option is experimental and may change without warning. Pass `--preview-features extra-build-dependencies` to disable this warning.
+    Resolved [N] packages in [TIME]
+    Installed [N] packages in [TIME]
+     + child==0.1.0 (from file://[TEMP_DIR]/child)
+    ");
+
     // Adding `extra-build-dependencies` with the wrong name should fail the build
     // (the cache is invalidated when extra build dependencies change)
     pyproject_toml.write_str(indoc! {r#"