Generate shell completion for uvx (#7388)

## Summary

Generate shell completion for uvx.

Create a `uvx` toplevel command just for completion by combining `uv
tool uvx` (hidden alias for `uv tool run`) with global arguments. This
explicit combination is needed otherwise global arguments are missing
(if they are missing, clap debug assertions fail when `uv tool run`
arguments refer to global arguments in directives like conflicts with).


Fixes #7258 

## Test Plan

- Tested using bash using `eval "$(cargo run --bin uv
generate-shell-completion bash)"`

crates/uv-cli/src/lib.rs

@@ -76,6 +76,13 @@ pub struct Cli {
     #[command(subcommand)]
     pub command: Box<Commands>,
 
+    #[command(flatten)]
+    pub top_level: TopLevelArgs,
+}
+
+#[derive(Parser)]
+#[command(disable_help_flag = true, disable_version_flag = true)]
+pub struct TopLevelArgs {
     #[command(flatten)]
     pub cache_args: Box<CacheArgs>,
 

crates/uv/src/lib.rs

@@ -16,7 +16,7 @@ use uv_cli::{
     compat::CompatArgs, CacheCommand, CacheNamespace, Cli, Commands, PipCommand, PipNamespace,
     ProjectCommand,
 };
-use uv_cli::{PythonCommand, PythonNamespace, ToolCommand, ToolNamespace};
+use uv_cli::{PythonCommand, PythonNamespace, ToolCommand, ToolNamespace, TopLevelArgs};
 #[cfg(feature = "self-update")]
 use uv_cli::{SelfCommand, SelfNamespace, SelfUpdateArgs};
 use uv_fs::CWD;
@@ -58,17 +58,17 @@ pub(crate) mod version;
 #[instrument(skip_all)]
 async fn run(cli: Cli) -> Result<ExitStatus> {
     // Enable flag to pick up warnings generated by workspace loading.
-    if !cli.global_args.quiet {
+    if !cli.top_level.global_args.quiet {
         uv_warnings::enable();
     }
 
     // Switch directories as early as possible.
-    if let Some(directory) = cli.global_args.directory.as_ref() {
+    if let Some(directory) = cli.top_level.global_args.directory.as_ref() {
         std::env::set_current_dir(directory)?;
     }
 
     // The `--isolated` argument is deprecated on preview APIs, and warns on non-preview APIs.
-    let deprecated_isolated = if cli.global_args.isolated {
+    let deprecated_isolated = if cli.top_level.global_args.isolated {
         match &*cli.command {
             // Supports `--isolated` as its own argument, so we can't warn either way.
             Commands::Tool(ToolNamespace {
@@ -106,7 +106,7 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
     //    If found, this file is combined with the user configuration file.
     // 3. The nearest configuration file (`uv.toml` or `pyproject.toml`) in the directory tree,
     //    starting from the current directory.
-    let filesystem = if let Some(config_file) = cli.config_file.as_ref() {
+    let filesystem = if let Some(config_file) = cli.top_level.config_file.as_ref() {
         if config_file
             .file_name()
             .is_some_and(|file_name| file_name == "pyproject.toml")
@@ -114,7 +114,7 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
             warn_user!("The `--config-file` argument expects to receive a `uv.toml` file, not a `pyproject.toml`. If you're trying to run a command from another project, use the `--directory` argument instead.");
         }
         Some(FilesystemOptions::from_file(config_file)?)
-    } else if deprecated_isolated || cli.no_config {
+    } else if deprecated_isolated || cli.top_level.no_config {
         None
     } else if matches!(&*cli.command, Commands::Tool(_)) {
         // For commands that operate at the user-level, ignore local configuration.
@@ -175,10 +175,10 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
         .combine(filesystem);
 
     // Resolve the global settings.
-    let globals = GlobalSettings::resolve(&cli.global_args, filesystem.as_ref());
+    let globals = GlobalSettings::resolve(&cli.top_level.global_args, filesystem.as_ref());
 
     // Resolve the cache settings.
-    let cache_settings = CacheSettings::resolve(*cli.cache_args, filesystem.as_ref());
+    let cache_settings = CacheSettings::resolve(*cli.top_level.cache_args, filesystem.as_ref());
 
     // Configure the `tracing` crate, which controls internal logging.
     #[cfg(feature = "tracing-durations-export")]
@@ -687,7 +687,7 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
                 args.hash_checking,
                 args.python,
                 args.settings,
-                cli.no_config,
+                cli.top_level.no_config,
                 globals.python_preference,
                 globals.python_downloads,
                 globals.connectivity,
@@ -743,7 +743,7 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
                 args.settings.exclude_newer,
                 globals.concurrency,
                 globals.native_tls,
-                cli.no_config,
+                cli.top_level.no_config,
                 args.no_project,
                 &cache,
                 printer,
@@ -757,7 +757,7 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
                 run_command,
                 script,
                 globals,
-                cli.no_config,
+                cli.top_level.no_config,
                 filesystem,
                 cache,
                 printer,
@@ -777,7 +777,30 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
             Ok(ExitStatus::Success)
         }
         Commands::GenerateShellCompletion(args) => {
+            // uv
             args.shell.generate(&mut Cli::command(), &mut stdout());
+
+            // uvx: combine `uv tool uvx` with the top-level arguments
+            let mut uvx = Cli::command()
+                .find_subcommand("tool")
+                .unwrap()
+                .find_subcommand("uvx")
+                .unwrap()
+                .clone()
+                // Avoid duplicating the `--help` and `--version` flags from the top-level arguments.
+                .disable_help_flag(true)
+                .disable_version_flag(true)
+                .version(env!("CARGO_PKG_VERSION"));
+
+            // Copy the top-level arguments into the `uvx` command. (Like `Args::augment_args`, but
+            // expanded to skip collisions.)
+            for arg in TopLevelArgs::command().get_arguments() {
+                if arg.get_id() != "isolated" {
+                    uvx = uvx.arg(arg);
+                }
+            }
+            args.shell.generate(&mut uvx, &mut stdout());
+
             Ok(ExitStatus::Success)
         }
         Commands::Tool(ToolNamespace {
@@ -974,7 +997,7 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
                 globals.python_downloads,
                 globals.native_tls,
                 globals.connectivity,
-                cli.no_config,
+                cli.top_level.no_config,
                 printer,
             )
             .await
@@ -1000,7 +1023,7 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
             commands::python_find(
                 args.request,
                 args.no_project,
-                cli.no_config,
+                cli.top_level.no_config,
                 args.system,
                 globals.python_preference,
                 &cache,