Add support for `uv run --all-packages` (#8741)

## Summary

Closes https://github.com/astral-sh/uv/issues/8724.

crates/uv-cli/src/lib.rs

@@ -2740,10 +2740,20 @@ pub struct RunArgs {
     #[command(flatten)]
     pub refresh: RefreshArgs,
 
+    /// Run the command with all workspace members installed.
+    ///
+    /// The workspace's environment (`.venv`) is updated to include all workspace
+    /// members.
+    ///
+    /// Any extras or groups specified via `--extra`, `--group`, or related options
+    /// will be applied to all workspace members.
+    #[arg(long, conflicts_with = "package")]
+    pub all_packages: bool,
+
     /// Run the command in a specific package in the workspace.
     ///
     /// If the workspace member does not exist, uv will exit with an error.
-    #[arg(long)]
+    #[arg(long, conflicts_with = "all_packages")]
     pub package: Option<PackageName>,
 
     /// Avoid discovering the project or workspace.

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

@@ -65,6 +65,7 @@ pub(crate) async fn run(
     frozen: bool,
     no_sync: bool,
     isolated: bool,
+    all_packages: bool,
     package: Option<PackageName>,
     no_project: bool,
     no_config: bool,
@@ -346,6 +347,11 @@ pub(crate) async fn run(
         if let Some(flag) = dev.groups().and_then(GroupsSpecification::as_flag) {
             warn_user!("`{flag}` is not supported for Python scripts with inline metadata");
         }
+        if all_packages {
+            warn_user!(
+                "`--all-packages` is a no-op for Python scripts with inline metadata, which always run in isolation"
+            );
+        }
         if package.is_some() {
             warn_user!(
                 "`--package` is a no-op for Python scripts with inline metadata, which always run in isolation"
@@ -550,8 +556,14 @@ pub(crate) async fn run(
                         .flatten();
                 }
             } else {
+                let target = if all_packages {
+                    InstallTarget::from_workspace(&project)
+                } else {
+                    InstallTarget::from_project(&project)
+                };
+
                 // Determine the default groups to include.
-                validate_dependency_groups(InstallTarget::from_project(&project), &dev)?;
+                validate_dependency_groups(target, &dev)?;
                 let defaults = default_dependency_groups(project.pyproject_toml())?;
 
                 // Determine the lock mode.
@@ -607,7 +619,7 @@ pub(crate) async fn run(
                 let install_options = InstallOptions::default();
 
                 project::sync::do_sync(
-                    InstallTarget::from_project(&project),
+                    target,
                     &venv,
                     result.lock(),
                     &extras,

crates/uv/src/lib.rs

@@ -1293,6 +1293,7 @@ async fn run_project(
                 args.frozen,
                 args.no_sync,
                 args.isolated,
+                args.all_packages,
                 args.package,
                 args.no_project,
                 no_config,

crates/uv/src/settings.rs

@@ -235,6 +235,7 @@ pub(crate) struct RunSettings {
     pub(crate) with_requirements: Vec<PathBuf>,
     pub(crate) isolated: bool,
     pub(crate) show_resolution: bool,
+    pub(crate) all_packages: bool,
     pub(crate) package: Option<PackageName>,
     pub(crate) no_project: bool,
     pub(crate) no_sync: bool,
@@ -271,6 +272,7 @@ impl RunSettings {
             installer,
             build,
             refresh,
+            all_packages,
             package,
             no_project,
             python,
@@ -296,6 +298,7 @@ impl RunSettings {
                 .collect(),
             isolated,
             show_resolution,
+            all_packages,
             package,
             no_project,
             no_sync,

crates/uv/tests/it/run.rs

@@ -806,6 +806,169 @@ fn run_with() -> Result<()> {
     Ok(())
 }
 
+/// Sync all members in a workspace.
+#[test]
+fn run_in_workspace() -> Result<()> {
+    let context = TestContext::new("3.12");
+
+    let pyproject_toml = context.temp_dir.child("pyproject.toml");
+    pyproject_toml.write_str(
+        r#"
+        [project]
+        name = "project"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["anyio>3"]
+
+        [build-system]
+        requires = ["setuptools>=42"]
+        build-backend = "setuptools.build_meta"
+
+        [tool.uv.workspace]
+        members = ["child1", "child2"]
+
+        [tool.uv.sources]
+        child1 = { workspace = true }
+        child2 = { workspace = true }
+        "#,
+    )?;
+    context
+        .temp_dir
+        .child("src")
+        .child("project")
+        .child("__init__.py")
+        .touch()?;
+
+    let child1 = context.temp_dir.child("child1");
+    child1.child("pyproject.toml").write_str(
+        r#"
+        [project]
+        name = "child1"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["iniconfig>1"]
+
+        [build-system]
+        requires = ["setuptools>=42"]
+        build-backend = "setuptools.build_meta"
+        "#,
+    )?;
+    child1
+        .child("src")
+        .child("child1")
+        .child("__init__.py")
+        .touch()?;
+
+    let child2 = context.temp_dir.child("child2");
+    child2.child("pyproject.toml").write_str(
+        r#"
+        [project]
+        name = "child2"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["typing-extensions>4"]
+
+        [build-system]
+        requires = ["setuptools>=42"]
+        build-backend = "setuptools.build_meta"
+        "#,
+    )?;
+    child2
+        .child("src")
+        .child("child2")
+        .child("__init__.py")
+        .touch()?;
+
+    let test_script = context.temp_dir.child("main.py");
+    test_script.write_str(indoc! { r"
+        import anyio
+       "
+    })?;
+
+    uv_snapshot!(context.filters(), context.run().arg("main.py"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    Prepared 4 packages in [TIME]
+    Installed 4 packages in [TIME]
+     + anyio==4.3.0
+     + idna==3.6
+     + project==0.1.0 (from file://[TEMP_DIR]/)
+     + sniffio==1.3.1
+    "###);
+
+    let test_script = context.temp_dir.child("main.py");
+    test_script.write_str(indoc! { r"
+        import iniconfig
+       "
+    })?;
+
+    uv_snapshot!(context.filters(), context.run().arg("main.py"), @r###"
+    success: false
+    exit_code: 1
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    Audited 4 packages in [TIME]
+    Traceback (most recent call last):
+      File "[TEMP_DIR]/main.py", line 1, in <module>
+        import iniconfig
+    ModuleNotFoundError: No module named 'iniconfig'
+    "###);
+
+    uv_snapshot!(context.filters(), context.run().arg("--package").arg("child1").arg("main.py"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    Prepared 2 packages in [TIME]
+    Installed 2 packages in [TIME]
+     + child1==0.1.0 (from file://[TEMP_DIR]/child1)
+     + iniconfig==2.0.0
+    "###);
+
+    let test_script = context.temp_dir.child("main.py");
+    test_script.write_str(indoc! { r"
+        import typing_extensions
+       "
+    })?;
+
+    uv_snapshot!(context.filters(), context.run().arg("main.py"), @r###"
+    success: false
+    exit_code: 1
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    Audited 4 packages in [TIME]
+    Traceback (most recent call last):
+      File "[TEMP_DIR]/main.py", line 1, in <module>
+        import typing_extensions
+    ModuleNotFoundError: No module named 'typing_extensions'
+    "###);
+
+    uv_snapshot!(context.filters(), context.run().arg("--all-packages").arg("main.py"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    Prepared 2 packages in [TIME]
+    Installed 2 packages in [TIME]
+     + child2==0.1.0 (from file://[TEMP_DIR]/child2)
+     + typing-extensions==4.10.0
+    "###);
+
+    Ok(())
+}
+
 #[test]
 fn run_with_editable() -> Result<()> {
     let context = TestContext::new("3.12");

docs/reference/cli.md

@@ -78,6 +78,12 @@ uv run [OPTIONS] [COMMAND]
 
 <p>This option is only available when running in a project.</p>
 
+</dd><dt><code>--all-packages</code></dt><dd><p>Run the command with all workspace members installed.</p>
+
+<p>The workspace&#8217;s environment (<code>.venv</code>) is updated to include all workspace members.</p>
+
+<p>Any extras or groups specified via <code>--extra</code>, <code>--group</code>, or related options will be applied to all workspace members.</p>
+
 </dd><dt><code>--allow-insecure-host</code> <i>allow-insecure-host</i></dt><dd><p>Allow insecure connections to a host.</p>
 
 <p>Can be provided multiple times.</p>