Respect installed packages in uv run

crates/uv/src/commands/project/lock.rs

@@ -9,6 +9,7 @@ use uv_configuration::{
     Concurrency, ConfigSettings, NoBinary, NoBuild, PreviewMode, SetupPyStrategy,
 };
 use uv_dispatch::BuildDispatch;
+use uv_installer::SitePackages;
 use uv_requirements::{ExtrasSpecification, RequirementsSpecification};
 use uv_resolver::{FlatIndex, InMemoryIndex, OptionsBuilder};
 use uv_types::{BuildIsolation, HashStrategy, InFlight};
@@ -40,6 +41,9 @@ pub(crate) async fn lock(
     // Discover or create the virtual environment.
     let venv = project::init(&project, cache, printer)?;
 
+    // Determine the set of installed packages.
+    let site_packages = SitePackages::from_executable(&venv)?;
+
     // TODO(zanieb): Support client configuration
     let client_builder = BaseClientBuilder::default();
 
@@ -111,6 +115,7 @@ pub(crate) async fn lock(
     // Resolve the requirements.
     let resolution = project::resolve(
         spec,
+        &site_packages,
         &hasher,
         &interpreter,
         tags,

crates/uv/src/commands/project/mod.rs

@@ -25,7 +25,7 @@ use uv_resolver::{
     Exclusions, FlatIndex, InMemoryIndex, Manifest, Options, PythonRequirement, ResolutionGraph,
     Resolver,
 };
-use uv_types::{EmptyInstalledPackages, HashStrategy, InFlight};
+use uv_types::{HashStrategy, InFlight};
 
 use crate::commands::project::discovery::Project;
 use crate::commands::reporters::{DownloadReporter, InstallReporter, ResolverReporter};
@@ -115,6 +115,7 @@ pub(crate) fn init(
 #[allow(clippy::too_many_arguments)]
 pub(crate) async fn resolve(
     spec: RequirementsSpecification,
+    site_packages: &SitePackages<'_>,
     hasher: &HashStrategy,
     interpreter: &Interpreter,
     tags: &Tags,
@@ -135,7 +136,6 @@ pub(crate) async fn resolve(
     let overrides = Overrides::default();
     let python_requirement = PythonRequirement::from_marker_environment(interpreter, markers);
     let editables = Vec::new();
-    let installed_packages = EmptyInstalledPackages;
 
     // Resolve the requirements from the provided sources.
     let requirements = {
@@ -206,7 +206,7 @@ pub(crate) async fn resolve(
         index,
         hasher,
         build_dispatch,
-        &installed_packages,
+        site_packages,
         DistributionDatabase::new(client, build_dispatch, concurrency.downloads),
     )?
     .with_reporter(ResolverReporter::from(printer));

crates/uv/src/commands/project/run.rs

@@ -292,6 +292,7 @@ async fn update_environment(
     // Resolve the requirements.
     let resolution = match project::resolve(
         spec,
+        &site_packages,
         &hasher,
         &interpreter,
         tags,
@@ -316,7 +317,7 @@ async fn update_environment(
     // Sync the environment.
     project::install(
         &resolution,
-        SitePackages::from_executable(&venv)?,
+        site_packages,
         &no_binary,
         link_mode,
         &index_locations,