Suppress resolver output by default in uv run

crates/uv-cli/src/lib.rs

@@ -1902,6 +1902,12 @@ pub struct RunArgs {
     #[arg(long, value_parser = parse_maybe_file_path)]
     pub with_requirements: Vec<Maybe<PathBuf>>,
 
+    /// Whether to show resolver and installer output from any environment modifications.
+    ///
+    /// By default, environment modifications are omitted, but enabled under `--verbose`.
+    #[arg(long)]
+    pub show_environment: bool,
+
     /// Assert that the `uv.lock` will remain unchanged.
     #[arg(long, conflicts_with = "frozen")]
     pub locked: bool,
@@ -2275,6 +2281,12 @@ pub struct ToolRunArgs {
     #[arg(long, value_parser = parse_maybe_file_path)]
     pub with_requirements: Vec<Maybe<PathBuf>>,
 
+    /// Whether to show resolver and installer output from any environment modifications.
+    ///
+    /// By default, environment modifications are omitted, but enabled under `--verbose`.
+    #[arg(long)]
+    pub show_environment: bool,
+
     #[command(flatten)]
     pub installer: ResolverInstallerArgs,
 

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

@@ -38,6 +38,7 @@ use crate::settings::ResolverInstallerSettings;
 pub(crate) async fn run(
     command: ExternalCommand,
     requirements: Vec<RequirementsSource>,
+    show_environment: bool,
     locked: bool,
     frozen: bool,
     package: Option<PackageName>,
@@ -87,7 +88,7 @@ pub(crate) async fn run(
     // Initialize any shared state.
     let state = SharedState::default();
 
-    let reporter = PythonDownloadReporter::single(printer);
+    let reporter = PythonDownloadReporter::single(printer.filter(show_environment));
 
     // Determine whether the command to execute is a PEP 723 script.
     let script_interpreter = if let RunCommand::Python(target, _) = &command {
@@ -144,7 +145,7 @@ pub(crate) async fn run(
                 concurrency,
                 native_tls,
                 cache,
-                printer,
+                printer.filter(show_environment),
             )
             .await?;
 
@@ -202,7 +203,7 @@ pub(crate) async fn run(
                 connectivity,
                 native_tls,
                 cache,
-                printer,
+                printer.filter(show_environment),
             )
             .await?;
 
@@ -218,7 +219,7 @@ pub(crate) async fn run(
                 concurrency,
                 native_tls,
                 cache,
-                printer,
+                printer.filter(show_environment),
             )
             .await
             {
@@ -247,7 +248,7 @@ pub(crate) async fn run(
                 concurrency,
                 native_tls,
                 cache,
-                printer,
+                printer.filter(show_environment),
             )
             .await?;
 
@@ -403,7 +404,7 @@ pub(crate) async fn run(
                         concurrency,
                         native_tls,
                         cache,
-                        printer,
+                        printer.filter(show_environment),
                     )
                     .await?,
                 )

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

@@ -31,7 +31,7 @@ use crate::commands::reporters::PythonDownloadReporter;
 
 use crate::commands::project::resolve_names;
 use crate::commands::{
-    project, project::environment::CachedEnvironment, tool::common::matching_packages, tool_list,
+    project::environment::CachedEnvironment, tool::common::matching_packages, tool_list,
 };
 use crate::commands::{ExitStatus, SharedState};
 use crate::printer::Printer;
@@ -59,6 +59,7 @@ pub(crate) async fn run(
     command: Option<ExternalCommand>,
     from: Option<String>,
     with: &[RequirementsSource],
+    show_environment: bool,
     python: Option<String>,
     settings: ResolverInstallerSettings,
     invocation_source: ToolRunCommand,
@@ -106,7 +107,7 @@ pub(crate) async fn run(
         concurrency,
         native_tls,
         cache,
-        printer,
+        printer.filter(show_environment),
     )
     .await?;
 
@@ -315,7 +316,7 @@ async fn get_or_create_environment(
 
     // Resolve the `from` requirement.
     let from = {
-        project::resolve_names(
+        resolve_names(
             vec![RequirementsSpecification::parse_package(from)?],
             &interpreter,
             settings,

crates/uv/src/lib.rs

@@ -650,6 +650,7 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
                 args.command,
                 args.from,
                 &requirements,
+                args.show_environment || globals.verbose > 0,
                 args.python,
                 args.settings,
                 invocation_source,
@@ -914,6 +915,7 @@ async fn run_project(
             commands::run(
                 args.command,
                 requirements,
+                args.show_environment || globals.verbose > 0,
                 args.locked,
                 args.frozen,
                 args.package,

crates/uv/src/printer.rs

@@ -45,6 +45,16 @@ impl Printer {
             Self::NoProgress => Stderr::Enabled,
         }
     }
+
+    /// Filter the [`Printer`], casting to [`Printer::Quiet`] if the condition is false.
+    #[must_use]
+    pub(crate) fn filter(self, condition: bool) -> Self {
+        if condition {
+            self
+        } else {
+            Self::Quiet
+        }
+    }
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]

crates/uv/src/settings.rs

@@ -191,6 +191,7 @@ pub(crate) struct RunSettings {
     pub(crate) command: ExternalCommand,
     pub(crate) with: Vec<String>,
     pub(crate) with_requirements: Vec<PathBuf>,
+    pub(crate) show_environment: bool,
     pub(crate) package: Option<PackageName>,
     pub(crate) python: Option<String>,
     pub(crate) refresh: Refresh,
@@ -202,8 +203,6 @@ impl RunSettings {
     #[allow(clippy::needless_pass_by_value)]
     pub(crate) fn resolve(args: RunArgs, filesystem: Option<FilesystemOptions>) -> Self {
         let RunArgs {
-            locked,
-            frozen,
             extra,
             all_extras,
             no_all_extras,
@@ -212,6 +211,9 @@ impl RunSettings {
             command,
             with,
             with_requirements,
+            show_environment,
+            locked,
+            frozen,
             installer,
             build,
             refresh,
@@ -233,6 +235,7 @@ impl RunSettings {
                 .into_iter()
                 .filter_map(Maybe::into_option)
                 .collect(),
+            show_environment,
             package,
             python,
             refresh: Refresh::from(refresh),
@@ -252,6 +255,7 @@ pub(crate) struct ToolRunSettings {
     pub(crate) from: Option<String>,
     pub(crate) with: Vec<String>,
     pub(crate) with_requirements: Vec<PathBuf>,
+    pub(crate) show_environment: bool,
     pub(crate) python: Option<String>,
     pub(crate) refresh: Refresh,
     pub(crate) settings: ResolverInstallerSettings,
@@ -266,6 +270,7 @@ impl ToolRunSettings {
             from,
             with,
             with_requirements,
+            show_environment,
             installer,
             build,
             refresh,
@@ -280,6 +285,7 @@ impl ToolRunSettings {
                 .into_iter()
                 .filter_map(Maybe::into_option)
                 .collect(),
+            show_environment,
             python,
             refresh: Refresh::from(refresh),
             settings: ResolverInstallerSettings::combine(

crates/uv/tests/cache_prune.rs

@@ -92,13 +92,6 @@ fn prune_cached_env() {
 
     ----- stderr -----
     warning: `uv tool run` is experimental and may change without warning
-    Resolved [N] packages in [TIME]
-    Prepared [N] packages in [TIME]
-    Installed [N] packages in [TIME]
-     + iniconfig==2.0.0
-     + packaging==24.0
-     + pluggy==1.4.0
-     + pytest==8.0.0
     "###);
 
     let filters: Vec<_> = context

crates/uv/tests/common/mod.rs

@@ -495,7 +495,7 @@ impl TestContext {
     }
 
     /// Create a `uv tool install` command with options shared across scenarios.
-    pub fn tool_install(&self) -> std::process::Command {
+    pub fn tool_install(&self) -> Command {
         let mut command = self.tool_install_without_exclude_newer();
         command.arg("--exclude-newer").arg(EXCLUDE_NEWER);
         command
@@ -507,16 +507,16 @@ impl TestContext {
     /// it can result in tests failing when the index state changes. Therefore,
     /// if you use this, there should be some other kind of mitigation in place.
     /// For example, pinning package versions.
-    pub fn tool_install_without_exclude_newer(&self) -> std::process::Command {
-        let mut command = std::process::Command::new(get_bin());
+    pub fn tool_install_without_exclude_newer(&self) -> Command {
+        let mut command = Command::new(get_bin());
         command.arg("tool").arg("install");
         self.add_shared_args(&mut command);
         command
     }
 
     /// Create a `uv tool list` command with options shared across scenarios.
-    pub fn tool_list(&self) -> std::process::Command {
-        let mut command = std::process::Command::new(get_bin());
+    pub fn tool_list(&self) -> Command {
+        let mut command = Command::new(get_bin());
         command.arg("tool").arg("list");
         self.add_shared_args(&mut command);
         command
@@ -531,8 +531,8 @@ impl TestContext {
     }
 
     /// Create a `uv tool uninstall` command with options shared across scenarios.
-    pub fn tool_uninstall(&self) -> std::process::Command {
-        let mut command = std::process::Command::new(get_bin());
+    pub fn tool_uninstall(&self) -> Command {
+        let mut command = Command::new(get_bin());
         command.arg("tool").arg("uninstall");
         self.add_shared_args(&mut command);
         command