Add uv tool list --outdated to show outdated tools

crates/uv-cli/src/lib.rs

@@ -3857,6 +3857,10 @@ pub struct ToolListArgs {
     #[arg(long)]
     pub show_version_specifiers: bool,
 
+    /// List only tools that are outdated.
+    #[arg(long)]
+    pub outdated: bool,
+
     // Hide unused global Python options.
     #[arg(long, hide = true)]
     pub python_preference: Option<PythonPreference>,

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

@@ -27,7 +27,7 @@ impl<'env> LatestClient<'env> {
         &self,
         package: &PackageName,
         index: Option<&IndexUrl>,
-    ) -> anyhow::Result<Option<DistFilename>, uv_client::Error> {
+    ) -> Result<Option<DistFilename>, uv_client::Error> {
         debug!("Fetching latest version of: `{package}`");
 
         let archives = match self.client.simple(package, index, self.capabilities).await {

crates/uv/src/commands/tool/list.rs

@@ -1,21 +1,47 @@
 use std::fmt::Write;
 
 use anyhow::Result;
+use futures::StreamExt;
 use itertools::Itertools;
 use owo_colors::OwoColorize;
+use rustc_hash::FxHashMap;
+use tracing::warn;
 
-use uv_cache::Cache;
+use uv_cache::{Cache, Refresh};
+use uv_cache_info::Timestamp;
+use uv_client::{Connectivity, RegistryClientBuilder};
+use uv_configuration::{Concurrency, TrustedHost};
+use uv_distribution_filename::DistFilename;
+use uv_distribution_types::IndexCapabilities;
 use uv_fs::Simplified;
-use uv_tool::InstalledTools;
+use uv_normalize::PackageName;
+use uv_pep440::Version;
+use uv_python::{
+    EnvironmentPreference, PythonEnvironment, PythonInstallation, PythonPreference, PythonRequest,
+    PythonVariant, VersionRequest,
+};
+use uv_resolver::RequiresPython;
+use uv_settings::ResolverInstallerOptions;
+use uv_tool::{InstalledTools, Tool};
 use uv_warnings::warn_user;
 
+use crate::commands::pip::latest::LatestClient;
+use crate::commands::reporters::LatestVersionReporter;
 use crate::commands::ExitStatus;
 use crate::printer::Printer;
+use crate::settings::ResolverInstallerSettings;
 
 /// List installed tools.
+#[allow(clippy::fn_params_excessive_bools)]
 pub(crate) async fn list(
     show_paths: bool,
     show_version_specifiers: bool,
+    outdated: bool,
+    python_preference: PythonPreference,
+    connectivity: Connectivity,
+    concurrency: Concurrency,
+    native_tls: bool,
+    allow_insecure_host: &[TrustedHost],
     cache: &Cache,
     printer: Printer,
 ) -> Result<ExitStatus> {
@@ -37,6 +63,91 @@ pub(crate) async fn list(
         return Ok(ExitStatus::Success);
     }
 
+    // Get the versions of the installed tools.
+    let versions = tools
+        .iter()
+        .map(|(name, _)| {
+            let version = installed_tools.version(name, cache);
+            (name.clone(), version)
+        })
+        .collect::<FxHashMap<_, _>>();
+
+    let latest = if outdated {
+        let reporter = LatestVersionReporter::from(printer).with_length(tools.len() as u64);
+
+        // Filter out malformed tools.
+        let tools = tools
+            .iter()
+            .filter_map(|(name, tool)| {
+                if let Ok(ref tool) = tool {
+                    if versions[name].is_ok() {
+                        return Some((name, tool));
+                    }
+                };
+                None
+            })
+            .collect_vec();
+
+        // Fetch the latest version for each tool.
+        let mut fetches = futures::stream::iter(tools)
+            .map(|(name, tool)| {
+                // SAFETY: The tool is known to be well-formed, get_environment will not fail.
+                let environment = installed_tools
+                    .get_environment(name, cache)
+                    .unwrap()
+                    .unwrap();
+                async move {
+                    let latest = find_latest(
+                        name,
+                        tool,
+                        &environment,
+                        python_preference,
+                        connectivity,
+                        native_tls,
+                        allow_insecure_host,
+                        cache,
+                    )
+                    .await?;
+                    anyhow::Ok((name, latest))
+                }
+            })
+            .buffer_unordered(concurrency.downloads);
+
+        let mut map = FxHashMap::default();
+        while let Some((package, version)) = fetches.next().await.transpose()? {
+            if let Some(version) = version.as_ref() {
+                reporter.on_fetch_version(package, version.version());
+                map.insert(package.clone(), version.clone());
+            } else {
+                reporter.on_fetch_progress();
+            }
+        }
+        reporter.on_fetch_complete();
+        map
+    } else {
+        FxHashMap::default()
+    };
+
+    // Remove tools that are up-to-date.
+    let tools = if outdated {
+        tools
+            .into_iter()
+            .filter(|(name, tool)| {
+                if tool.is_err() {
+                    return true;
+                }
+                let Ok(version) = versions[name].as_ref() else {
+                    return true;
+                };
+                latest
+                    .get(name)
+                    .map_or(true, |filename| filename.version() > version)
+            })
+            .collect_vec()
+    } else {
+        tools
+    };
+
     for (name, tool) in tools {
         // Skip invalid tools
         let Ok(tool) = tool else {
@@ -48,7 +159,7 @@ pub(crate) async fn list(
         };
 
         // Output tool name and version
-        let version = match installed_tools.version(&name, cache) {
+        let version = match &versions[&name] {
             Ok(version) => version,
             Err(e) => {
                 writeln!(printer.stderr(), "{e}")?;
@@ -73,18 +184,35 @@ pub(crate) async fn list(
             String::new()
         };
 
+        let latest = if outdated {
+            let latest = latest.get(&name).map(DistFilename::version);
+            if let Some(latest) = latest {
+                format!(" (latest: v{latest})")
+            } else {
+                String::new()
+            }
+        } else {
+            String::new()
+        };
+
         if show_paths {
             writeln!(
                 printer.stdout(),
-                "{} ({})",
+                "{}{}{}",
                 format!("{name} v{version}{version_specifier}").bold(),
-                installed_tools.tool_dir(&name).simplified_display().cyan(),
+                latest.bold().cyan(),
+                format!(
+                    " ({})",
+                    installed_tools.tool_dir(&name).simplified_display()
+                )
+                .cyan(),
             )?;
         } else {
             writeln!(
                 printer.stdout(),
-                "{}",
-                format!("{name} v{version}{version_specifier}").bold()
+                "{}{}",
+                format!("{name} v{version}{version_specifier}").bold(),
+                latest.bold().cyan(),
             )?;
         }
 
@@ -105,3 +233,107 @@ pub(crate) async fn list(
 
     Ok(ExitStatus::Success)
 }
+
+/// Find the latest version of a tool.
+async fn find_latest(
+    name: &PackageName,
+    tool: &Tool,
+    environment: &PythonEnvironment,
+    python_preference: PythonPreference,
+    connectivity: Connectivity,
+    native_tls: bool,
+    allow_insecure_host: &[TrustedHost],
+    cache: &Cache,
+) -> Result<Option<DistFilename>> {
+    let capabilities = IndexCapabilities::default();
+
+    let ResolverInstallerSettings {
+        index_locations,
+        index_strategy,
+        keyring_provider,
+        prerelease,
+        exclude_newer,
+        ..
+    } = ResolverInstallerOptions::from(tool.options().clone()).into();
+
+    // Initialize the registry client.
+    let client =
+        RegistryClientBuilder::new(cache.clone().with_refresh(Refresh::All(Timestamp::now())))
+            .native_tls(native_tls)
+            .connectivity(connectivity)
+            .index_urls(index_locations.index_urls())
+            .index_strategy(index_strategy)
+            .keyring(keyring_provider)
+            .allow_insecure_host(allow_insecure_host.to_vec())
+            .markers(environment.interpreter().markers())
+            .platform(environment.interpreter().platform())
+            .build();
+
+    // Determine the platform tags.
+    let interpreter = environment.interpreter();
+    let tags = interpreter.tags()?;
+
+    // Determine the `requires-python` specifier.
+    let python_request = tool.python().as_deref().map(PythonRequest::parse);
+    let requires_python = if let Some(python_request) = python_request {
+        match python_request {
+            PythonRequest::Version(VersionRequest::MajorMinor(
+                major,
+                minor,
+                PythonVariant::Default,
+            )) => RequiresPython::greater_than_equal_version(&Version::new([
+                u64::from(major),
+                u64::from(minor),
+            ])),
+            PythonRequest::Version(VersionRequest::MajorMinorPatch(
+                major,
+                minor,
+                patch,
+                PythonVariant::Default,
+            )) => RequiresPython::greater_than_equal_version(&Version::new([
+                u64::from(major),
+                u64::from(minor),
+                u64::from(patch),
+            ])),
+            PythonRequest::Version(VersionRequest::Range(ref specifiers, _)) => {
+                RequiresPython::from_specifiers(specifiers)
+            }
+            python_request => {
+                match PythonInstallation::find(
+                    &python_request,
+                    EnvironmentPreference::OnlySystem,
+                    python_preference,
+                    cache,
+                ) {
+                    Ok(installation) => {
+                        let interpreter = installation.into_interpreter();
+                        RequiresPython::greater_than_equal_version(
+                            &interpreter.python_minor_version(),
+                        )
+                    }
+                    Err(err) => {
+                        warn!(
+                            "Failed to find a Python interpreter for tool `{name}` by request `{python_request}`, use current tool interpreter instead: {err}",
+                        );
+                        RequiresPython::greater_than_equal_version(
+                            &interpreter.python_minor_version(),
+                        )
+                    }
+                }
+            }
+        }
+    } else {
+        RequiresPython::greater_than_equal_version(&interpreter.python_minor_version())
+    };
+
+    let client = LatestClient {
+        client: &client,
+        capabilities: &capabilities,
+        prerelease,
+        exclude_newer,
+        tags: Some(tags),
+        requires_python: &requires_python,
+    };
+
+    Ok(client.find_latest(name, None).await?)
+}

crates/uv/src/lib.rs

@@ -1007,6 +1007,12 @@ async fn run(mut cli: Cli) -> Result<ExitStatus> {
             commands::tool_list(
                 args.show_paths,
                 args.show_version_specifiers,
+                args.outdated,
+                globals.python_preference,
+                globals.connectivity,
+                globals.concurrency,
+                globals.native_tls,
+                &globals.allow_insecure_host,
                 &cache,
                 printer,
             )

crates/uv/src/settings.rs

@@ -643,6 +643,7 @@ impl ToolUpgradeSettings {
 pub(crate) struct ToolListSettings {
     pub(crate) show_paths: bool,
     pub(crate) show_version_specifiers: bool,
+    pub(crate) outdated: bool,
 }
 
 impl ToolListSettings {
@@ -652,13 +653,15 @@ impl ToolListSettings {
         let ToolListArgs {
             show_paths,
             show_version_specifiers,
+            outdated,
             python_preference: _,
             no_python_downloads: _,
         } = args;
 
         Self {
             show_paths,
             show_version_specifiers,
+            outdated,
         }
     }
 }