Add user-facing output to indicate PEP 723 script (#4881)

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

@@ -1,9 +1,11 @@
 use std::borrow::Cow;
 use std::ffi::OsString;
+use std::fmt::Write;
 use std::path::PathBuf;
 
 use anyhow::{Context, Result};
 use itertools::Itertools;
+use owo_colors::OwoColorize;
 use tokio::process::Command;
 use tracing::debug;
 
@@ -13,6 +15,7 @@ use uv_cli::ExternalCommand;
 use uv_client::{BaseClientBuilder, Connectivity};
 use uv_configuration::{Concurrency, ExtrasSpecification, PreviewMode};
 use uv_distribution::{VirtualProject, Workspace, WorkspaceError};
+use uv_fs::Simplified;
 use uv_installer::{SatisfiesResult, SitePackages};
 use uv_normalize::PackageName;
 use uv_python::{
@@ -63,7 +66,11 @@ pub(crate) async fn run(
     // Determine whether the command to execute is a PEP 723 script.
     let script_interpreter = if let RunCommand::Python(target, _) = &command {
         if let Some(metadata) = uv_scripts::read_pep723_metadata(&target).await? {
-            debug!("Found PEP 723 script at: {}", target.display());
+            writeln!(
+                printer.stderr(),
+                "Reading inline script metadata from: {}",
+                target.user_display().cyan()
+            )?;
 
             // (1) Explicit request from user
             let python_request = if let Some(request) = python.as_deref() {

crates/uv/tests/run.rs

@@ -225,16 +225,17 @@ fn run_script() -> Result<()> {
 
     // Running the script should install the requirements.
     uv_snapshot!(context.filters(), context.run().arg("--preview").arg("main.py"), @r###"
-        success: true
-        exit_code: 0
-        ----- stdout -----
+    success: true
+    exit_code: 0
+    ----- stdout -----
 
-        ----- stderr -----
-        Resolved 1 package in [TIME]
-        Prepared 1 package in [TIME]
-        Installed 1 package in [TIME]
-         + iniconfig==2.0.0
-        "###);
+    ----- stderr -----
+    Reading inline script metadata from: main.py
+    Resolved 1 package in [TIME]
+    Prepared 1 package in [TIME]
+    Installed 1 package in [TIME]
+     + iniconfig==2.0.0
+    "###);
 
     // Running again should use the existing environment.
     uv_snapshot!(context.filters(), context.run().arg("--preview").arg("main.py"), @r###"
@@ -243,6 +244,7 @@ fn run_script() -> Result<()> {
     ----- stdout -----
 
     ----- stderr -----
+    Reading inline script metadata from: main.py
     Resolved 1 package in [TIME]
     "###);