Add support for uv sync --all-packages (#8739)

## Summary

This PR enables `uv sync --all-packages` to sync all packages in a
workspace. It removes a common use-case for the legacy non-`[project]`
packages that we're trying to move away from.

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

crates/uv-cli/src/lib.rs

@@ -2119,7 +2119,7 @@ pub struct BuildArgs {
     /// directory if no source directory is provided.
     ///
     /// If the workspace member does not exist, uv will exit with an error.
-    #[arg(long, conflicts_with("all"))]
+    #[arg(long, conflicts_with("all_packages"))]
     pub package: Option<PackageName>,
 
     /// Builds all packages in the workspace.
@@ -2128,8 +2128,8 @@ pub struct BuildArgs {
     /// directory if no source directory is provided.
     ///
     /// If the workspace member does not exist, uv will exit with an error.
-    #[arg(long, conflicts_with("package"))]
+    #[arg(long, alias = "all", conflicts_with("package"))]
-    pub all: bool,
+    pub all_packages: bool,
 
     /// The output directory to which distributions should be written.
     ///
@@ -2912,13 +2912,23 @@ pub struct SyncArgs {
     #[command(flatten)]
     pub refresh: RefreshArgs,
 
+    /// Sync all packages in the workspace.
+    ///
+    /// 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,
+
     /// Sync for a specific package in the workspace.
     ///
     /// The workspace's environment (`.venv`) is updated to reflect the subset
     /// of dependencies declared by the specified workspace member package.
     ///
     /// 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>,
 
     /// The Python interpreter to use for the project environment.

crates/uv-resolver/src/lock/mod.rs

@@ -576,7 +576,7 @@ impl Lock {
     /// Convert the [`Lock`] to a [`Resolution`] using the given marker environment, tags, and root.
     pub fn to_resolution(
         &self,
-        project: InstallTarget<'_>,
+        target: InstallTarget<'_>,
         marker_env: &ResolverMarkerEnvironment,
         tags: &Tags,
         extras: &ExtrasSpecification,
@@ -588,7 +588,7 @@ impl Lock {
         let mut seen = FxHashSet::default();
 
         // Add the workspace packages to the queue.
-        for root_name in project.packages() {
+        for root_name in target.packages() {
             let root = self
                 .find_by_name(root_name)
                 .map_err(|_| LockErrorKind::MultipleRootPackages {
@@ -638,7 +638,7 @@ impl Lock {
 
         // Add any dependency groups that are exclusive to the workspace root (e.g., dev
         // dependencies in (legacy) non-project workspace roots).
-        let groups = project
+        let groups = target
             .groups()
             .map_err(|err| LockErrorKind::DependencyGroup { err })?;
         for group in dev.iter() {
@@ -688,13 +688,13 @@ impl Lock {
             }
             if install_options.include_package(
                 &dist.id.name,
-                project.project_name(),
+                target.project_name(),
                 &self.manifest.members,
             ) {
                 map.insert(
                     dist.id.name.clone(),
                     ResolvedDist::Installable(dist.to_dist(
-                        project.workspace().install_path(),
+                        target.workspace().install_path(),
                         TagPolicy::Required(tags),
                         build_options,
                     )?),

crates/uv-workspace/src/workspace.rs

@@ -1496,35 +1496,39 @@ impl VirtualProject {
 /// A target that can be installed.
 #[derive(Debug, Copy, Clone)]
 pub enum InstallTarget<'env> {
+    /// An entire workspace.
+    Workspace(&'env Workspace),
+    /// A (legacy) non-project workspace root.
+    NonProjectWorkspace(&'env Workspace),
     /// A project (which could be a workspace root or member).
     Project(&'env ProjectWorkspace),
-    /// A (legacy) non-project workspace root.
-    NonProject(&'env Workspace),
     /// A frozen member within a [`Workspace`].
-    FrozenMember(&'env Workspace, &'env PackageName),
+    FrozenProject(&'env Workspace, &'env PackageName),
 }
 
 impl<'env> InstallTarget<'env> {
     /// Create an [`InstallTarget`] for a frozen member within a workspace.
-    pub fn frozen_member(project: &'env VirtualProject, package_name: &'env PackageName) -> Self {
+    pub fn frozen(project: &'env VirtualProject, package_name: &'env PackageName) -> Self {
-        Self::FrozenMember(project.workspace(), package_name)
+        Self::FrozenProject(project.workspace(), package_name)
     }
 
     /// Return the [`Workspace`] of the target.
     pub fn workspace(&self) -> &Workspace {
         match self {
+            Self::Workspace(workspace) => workspace,
             Self::Project(project) => project.workspace(),
-            Self::NonProject(workspace) => workspace,
+            Self::NonProjectWorkspace(workspace) => workspace,
-            Self::FrozenMember(workspace, _) => workspace,
+            Self::FrozenProject(workspace, _) => workspace,
         }
     }
 
     /// Return the [`PackageName`] of the target.
     pub fn packages(&self) -> impl Iterator<Item = &PackageName> {
         match self {
+            Self::Workspace(workspace) => Either::Right(workspace.packages().keys()),
             Self::Project(project) => Either::Left(std::iter::once(project.project_name())),
-            Self::NonProject(workspace) => Either::Right(workspace.packages().keys()),
+            Self::NonProjectWorkspace(workspace) => Either::Right(workspace.packages().keys()),
-            Self::FrozenMember(_, package_name) => Either::Left(std::iter::once(*package_name)),
+            Self::FrozenProject(_, package_name) => Either::Left(std::iter::once(*package_name)),
         }
     }
 
@@ -1540,8 +1544,8 @@ impl<'env> InstallTarget<'env> {
         DependencyGroupError,
     > {
         match self {
-            Self::Project(_) | Self::FrozenMember(..) => Ok(BTreeMap::new()),
+            Self::Workspace(_) | Self::Project(_) | Self::FrozenProject(..) => Ok(BTreeMap::new()),
-            Self::NonProject(workspace) => {
+            Self::NonProjectWorkspace(workspace) => {
                 // For non-projects, we might have `dependency-groups` or `tool.uv.dev-dependencies`
                 // that are attached to the workspace root (which isn't a member).
 
@@ -1591,18 +1595,24 @@ impl<'env> InstallTarget<'env> {
     /// Return the [`PackageName`] of the target, if available.
     pub fn project_name(&self) -> Option<&PackageName> {
         match self {
+            Self::Workspace(_) => None,
             Self::Project(project) => Some(project.project_name()),
-            Self::NonProject(_) => None,
+            Self::NonProjectWorkspace(_) => None,
-            Self::FrozenMember(_, package_name) => Some(package_name),
+            Self::FrozenProject(_, package_name) => Some(package_name),
-        }
         }
     }
 
-impl<'env> From<&'env VirtualProject> for InstallTarget<'env> {
+    pub fn from_workspace(workspace: &'env VirtualProject) -> Self {
-    fn from(project: &'env VirtualProject) -> Self {
+        match workspace {
+            VirtualProject::Project(project) => Self::Workspace(project.workspace()),
+            VirtualProject::NonProject(workspace) => Self::NonProjectWorkspace(workspace),
+        }
+    }
+
+    pub fn from_project(project: &'env VirtualProject) -> Self {
         match project {
             VirtualProject::Project(project) => Self::Project(project),
-            VirtualProject::NonProject(workspace) => Self::NonProject(workspace),
+            VirtualProject::NonProject(workspace) => Self::NonProjectWorkspace(workspace),
         }
     }
 }

crates/uv/src/commands/build_frontend.rs

@@ -43,7 +43,7 @@ pub(crate) async fn build_frontend(
     project_dir: &Path,
     src: Option<PathBuf>,
     package: Option<PackageName>,
-    all: bool,
+    all_packages: bool,
     output_dir: Option<PathBuf>,
     sdist: bool,
     wheel: bool,
@@ -65,7 +65,7 @@ pub(crate) async fn build_frontend(
         project_dir,
         src.as_deref(),
         package.as_ref(),
-        all,
+        all_packages,
         output_dir.as_deref(),
         sdist,
         wheel,
@@ -105,7 +105,7 @@ async fn build_impl(
     project_dir: &Path,
     src: Option<&Path>,
     package: Option<&PackageName>,
-    all: bool,
+    all_packages: bool,
     output_dir: Option<&Path>,
     sdist: bool,
     wheel: bool,
@@ -171,7 +171,7 @@ async fn build_impl(
     // Attempt to discover the workspace; on failure, save the error for later.
     let workspace = Workspace::discover(src.directory(), &DiscoveryOptions::default()).await;
 
-    // If a `--package` or `--all` was provided, adjust the source directory.
+    // If a `--package` or `--all-packages` was provided, adjust the source directory.
     let packages = if let Some(package) = package {
         if matches!(src, Source::File(_)) {
             return Err(anyhow::anyhow!(
@@ -201,10 +201,10 @@ async fn build_impl(
         vec![AnnotatedSource::from(Source::Directory(Cow::Borrowed(
             package.root(),
         )))]
-    } else if all {
+    } else if all_packages {
         if matches!(src, Source::File(_)) {
             return Err(anyhow::anyhow!(
-                "Cannot specify `--all` when building from a file"
+                "Cannot specify `--all-packages` when building from a file"
             ));
         }
 
@@ -212,7 +212,7 @@ async fn build_impl(
             Ok(ref workspace) => workspace,
             Err(err) => {
                 return Err(anyhow::Error::from(err)
-                    .context("`--all` was provided, but no workspace was found"));
+                    .context("`--all-packages` was provided, but no workspace was found"));
             }
         };
 

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

@@ -870,7 +870,7 @@ async fn lock_and_sync(
     };
 
     project::sync::do_sync(
-        InstallTarget::from(&project),
+        InstallTarget::from_project(&project),
         venv,
         &lock,
         &extras,

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

@@ -14,7 +14,7 @@ use uv_configuration::{
 use uv_normalize::PackageName;
 use uv_python::{PythonDownloads, PythonPreference, PythonRequest};
 use uv_resolver::RequirementsTxtExport;
-use uv_workspace::{DiscoveryOptions, MemberDiscovery, VirtualProject, Workspace};
+use uv_workspace::{DiscoveryOptions, InstallTarget, MemberDiscovery, VirtualProject, Workspace};
 
 use crate::commands::pip::loggers::DefaultResolveLogger;
 use crate::commands::project::lock::{do_safe_lock, LockMode};
@@ -73,7 +73,7 @@ pub(crate) async fn export(
     };
 
     // Determine the default groups to include.
-    validate_dependency_groups(&project, &dev)?;
+    validate_dependency_groups(InstallTarget::from_project(&project), &dev)?;
     let defaults = default_dependency_groups(project.pyproject_toml())?;
 
     let VirtualProject::Project(project) = project else {

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

@@ -38,7 +38,7 @@ use uv_types::{BuildIsolation, EmptyInstalledPackages, HashStrategy};
 use uv_warnings::{warn_user, warn_user_once};
 use uv_workspace::dependency_groups::DependencyGroupError;
 use uv_workspace::pyproject::PyProjectToml;
-use uv_workspace::{VirtualProject, Workspace};
+use uv_workspace::{InstallTarget, Workspace};
 
 use crate::commands::pip::loggers::{InstallLogger, ResolveLogger};
 use crate::commands::pip::operations::{Changelog, Modifications};
@@ -1369,7 +1369,7 @@ pub(crate) async fn script_python_requirement(
 /// Validate the dependency groups requested by the [`DevGroupsSpecification`].
 #[allow(clippy::result_large_err)]
 pub(crate) fn validate_dependency_groups(
-    project: &VirtualProject,
+    target: InstallTarget<'_>,
     dev: &DevGroupsSpecification,
 ) -> Result<(), ProjectError> {
     for group in dev
@@ -1377,8 +1377,14 @@ pub(crate) fn validate_dependency_groups(
         .into_iter()
         .flat_map(GroupsSpecification::names)
     {
-        match project {
+        match target {
-            VirtualProject::Project(project) => {
+            InstallTarget::Workspace(workspace) | InstallTarget::NonProjectWorkspace(workspace) => {
+                // The group must be defined in the workspace.
+                if !workspace.groups().contains(group) {
+                    return Err(ProjectError::MissingGroupWorkspace(group.clone()));
+                }
+            }
+            InstallTarget::Project(project) => {
                 // The group must be defined in the target project.
                 if !project
                     .current_project()
@@ -1390,25 +1396,7 @@ pub(crate) fn validate_dependency_groups(
                     return Err(ProjectError::MissingGroupProject(group.clone()));
                 }
             }
-            VirtualProject::NonProject(workspace) => {
+            InstallTarget::FrozenProject(_, _) => {}
-                // The group must be defined in at least one workspace package.
-                if !workspace
-                    .pyproject_toml()
-                    .dependency_groups
-                    .as_ref()
-                    .is_some_and(|groups| groups.contains_key(group))
-                {
-                    if workspace.packages().values().all(|package| {
-                        !package
-                            .pyproject_toml()
-                            .dependency_groups
-                            .as_ref()
-                            .is_some_and(|groups| groups.contains_key(group))
-                    }) {
-                        return Err(ProjectError::MissingGroupWorkspace(group.clone()));
-                    }
-                }
-            }
         }
     }
     Ok(())

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

@@ -236,7 +236,7 @@ pub(crate) async fn remove(
     let defaults = default_dependency_groups(project.pyproject_toml())?;
 
     project::sync::do_sync(
-        InstallTarget::from(&project),
+        InstallTarget::from_project(&project),
         &venv,
         &lock,
         &extras,

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

@@ -551,7 +551,7 @@ pub(crate) async fn run(
                 }
             } else {
                 // Determine the default groups to include.
-                validate_dependency_groups(&project, &dev)?;
+                validate_dependency_groups(InstallTarget::from_project(&project), &dev)?;
                 let defaults = default_dependency_groups(project.pyproject_toml())?;
 
                 // Determine the lock mode.
@@ -607,7 +607,7 @@ pub(crate) async fn run(
                 let install_options = InstallOptions::default();
 
                 project::sync::do_sync(
-                    InstallTarget::from(&project),
+                    InstallTarget::from_project(&project),
                     &venv,
                     result.lock(),
                     &extras,

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

@@ -33,7 +33,7 @@ use crate::commands::project::lock::{do_safe_lock, LockMode};
 use crate::commands::project::{
     default_dependency_groups, validate_dependency_groups, ProjectError, SharedState,
 };
-use crate::commands::{diagnostics, pip, project, ExitStatus};
+use crate::commands::{diagnostics, project, ExitStatus};
 use crate::printer::Printer;
 use crate::settings::{InstallerSettingsRef, ResolverInstallerSettings};
 
@@ -43,6 +43,7 @@ pub(crate) async fn sync(
     project_dir: &Path,
     locked: bool,
     frozen: bool,
+    all_packages: bool,
     package: Option<PackageName>,
     extras: ExtrasSpecification,
     dev: DevGroupsSpecification,
@@ -60,7 +61,7 @@ pub(crate) async fn sync(
     printer: Printer,
 ) -> Result<ExitStatus> {
     // Identify the project.
-    let project = if frozen {
+    let project = if frozen && !all_packages {
         VirtualProject::discover(
             project_dir,
             &DiscoveryOptions {
@@ -82,9 +83,11 @@ pub(crate) async fn sync(
 
     // Identify the target.
     let target = if let Some(package) = package.as_ref().filter(|_| frozen) {
-        InstallTarget::frozen_member(&project, package)
+        InstallTarget::frozen(&project, package)
+    } else if all_packages {
+        InstallTarget::from_workspace(&project)
     } else {
-        InstallTarget::from(&project)
+        InstallTarget::from_project(&project)
     };
 
     // TODO(lucab): improve warning content
@@ -96,7 +99,7 @@ pub(crate) async fn sync(
     }
 
     // Determine the default groups to include.
-    validate_dependency_groups(&project, &dev)?;
+    validate_dependency_groups(target, &dev)?;
     let defaults = default_dependency_groups(project.pyproject_toml())?;
 
     // Discover or create the virtual environment.
@@ -363,7 +366,7 @@ pub(super) async fn do_sync(
     let site_packages = SitePackages::from_environment(venv)?;
 
     // Sync the environment.
-    pip::operations::install(
+    operations::install(
         &resolution,
         site_packages,
         modifications,

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

@@ -9,7 +9,7 @@ use uv_configuration::{Concurrency, DevGroupsSpecification, LowerBound, TargetTr
 use uv_pep508::PackageName;
 use uv_python::{PythonDownloads, PythonPreference, PythonRequest, PythonVersion};
 use uv_resolver::TreeDisplay;
-use uv_workspace::{DiscoveryOptions, VirtualProject, Workspace};
+use uv_workspace::{DiscoveryOptions, InstallTarget, Workspace};
 
 use crate::commands::pip::loggers::DefaultResolveLogger;
 use crate::commands::pip::resolution_markers;
@@ -50,7 +50,7 @@ pub(crate) async fn tree(
     let workspace = Workspace::discover(project_dir, &DiscoveryOptions::default()).await?;
 
     // Determine the default groups to include.
-    validate_dependency_groups(&VirtualProject::NonProject(workspace.clone()), &dev)?;
+    validate_dependency_groups(InstallTarget::Workspace(&workspace), &dev)?;
     let defaults = default_dependency_groups(workspace.pyproject_toml())?;
 
     // Find an interpreter for the project, unless `--frozen` and `--universal` are both set.

crates/uv/src/lib.rs

@@ -712,7 +712,7 @@ async fn run(mut cli: Cli) -> Result<ExitStatus> {
                 &project_dir,
                 args.src,
                 args.package,
-                args.all,
+                args.all_packages,
                 args.out_dir,
                 args.sdist,
                 args.wheel,
@@ -1327,6 +1327,7 @@ async fn run_project(
                 project_dir,
                 args.locked,
                 args.frozen,
+                args.all_packages,
                 args.package,
                 args.extras,
                 args.dev,

crates/uv/src/settings.rs

@@ -720,6 +720,7 @@ pub(crate) struct SyncSettings {
     pub(crate) editable: EditableMode,
     pub(crate) install_options: InstallOptions,
     pub(crate) modifications: Modifications,
+    pub(crate) all_packages: bool,
     pub(crate) package: Option<PackageName>,
     pub(crate) python: Option<String>,
     pub(crate) refresh: Refresh,
@@ -751,6 +752,7 @@ impl SyncSettings {
             installer,
             build,
             refresh,
+            all_packages,
             package,
             python,
         } = args;
@@ -781,6 +783,7 @@ impl SyncSettings {
             } else {
                 Modifications::Sufficient
             },
+            all_packages,
             package,
             python: python.and_then(Maybe::into_option),
             refresh: Refresh::from(refresh),
@@ -1797,7 +1800,7 @@ impl PipCheckSettings {
 pub(crate) struct BuildSettings {
     pub(crate) src: Option<PathBuf>,
     pub(crate) package: Option<PackageName>,
-    pub(crate) all: bool,
+    pub(crate) all_packages: bool,
     pub(crate) out_dir: Option<PathBuf>,
     pub(crate) sdist: bool,
     pub(crate) wheel: bool,
@@ -1816,7 +1819,7 @@ impl BuildSettings {
             src,
             out_dir,
             package,
-            all,
+            all_packages,
             sdist,
             wheel,
             build_constraint,
@@ -1835,7 +1838,7 @@ impl BuildSettings {
         Self {
             src,
             package,
-            all,
+            all_packages,
             out_dir,
             sdist,
             wheel,

crates/uv/tests/it/build.rs

@@ -1206,7 +1206,7 @@ fn workspace() -> Result<()> {
     ----- stdout -----
 
     ----- stderr -----
-    error: `--all` was provided, but no workspace was found
+    error: `--all-packages` was provided, but no workspace was found
       Caused by: No `pyproject.toml` found in current directory or any parent directory
     "###);
 

crates/uv/tests/it/sync.rs

@@ -263,7 +263,7 @@ fn package() -> Result<()> {
         name = "child"
         version = "0.1.0"
         requires-python = ">=3.12"
-        dependencies = ["iniconfig>1"]
+        dependencies = ["iniconfig>=1"]
 
         [build-system]
         requires = ["setuptools>=42"]
@@ -415,7 +415,7 @@ fn sync_legacy_non_project_dev_dependencies() -> Result<()> {
         name = "child"
         version = "0.1.0"
         requires-python = ">=3.12"
-        dependencies = ["iniconfig>1"]
+        dependencies = ["iniconfig>=1"]
 
         [build-system]
         requires = ["setuptools>=42"]
@@ -500,7 +500,7 @@ fn sync_legacy_non_project_group() -> Result<()> {
         name = "child"
         version = "0.1.0"
         requires-python = ">=3.12"
-        dependencies = ["iniconfig>1"]
+        dependencies = ["iniconfig>=1"]
 
         [dependency-groups]
         baz = ["typing-extensions"]
@@ -1805,7 +1805,7 @@ fn no_install_workspace() -> Result<()> {
         name = "child"
         version = "0.1.0"
         requires-python = ">=3.12"
-        dependencies = ["iniconfig>1"]
+        dependencies = ["iniconfig>=1"]
 
         [build-system]
         requires = ["setuptools>=42"]
@@ -3073,7 +3073,7 @@ fn transitive_dev() -> Result<()> {
         build-backend = "setuptools.build_meta"
 
         [tool.uv]
-        dev-dependencies = ["iniconfig>1"]
+        dev-dependencies = ["iniconfig>=1"]
         "#,
     )?;
 
@@ -3425,7 +3425,7 @@ fn build_system_requires_workspace() -> Result<()> {
         name = "project"
         version = "0.1.0"
         requires-python = ">=3.12"
-        dependencies = ["iniconfig>1"]
+        dependencies = ["iniconfig>=1"]
 
         [build-system]
         requires = ["setuptools>=42", "backend==0.1.0"]
@@ -3508,7 +3508,7 @@ fn build_system_requires_path() -> Result<()> {
         name = "project"
         version = "0.1.0"
         requires-python = ">=3.12"
-        dependencies = ["iniconfig>1"]
+        dependencies = ["iniconfig>=1"]
 
         [build-system]
         requires = ["setuptools>=42", "backend==0.1.0"]
@@ -3798,3 +3798,306 @@ fn sync_explicit() -> Result<()> {
 
     Ok(())
 }
+
+/// Sync all members in a workspace.
+#[test]
+fn sync_all() -> 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", "child"]
+
+        [build-system]
+        requires = ["setuptools>=42"]
+        build-backend = "setuptools.build_meta"
+
+        [tool.uv.workspace]
+        members = ["child"]
+
+        [tool.uv.sources]
+        child = { workspace = true }
+        "#,
+    )?;
+    context
+        .temp_dir
+        .child("src")
+        .child("project")
+        .child("__init__.py")
+        .touch()?;
+
+    // Add a workspace member.
+    let child = context.temp_dir.child("child");
+    child.child("pyproject.toml").write_str(
+        r#"
+        [project]
+        name = "child"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["iniconfig>=1"]
+
+        [build-system]
+        requires = ["setuptools>=42"]
+        build-backend = "setuptools.build_meta"
+        "#,
+    )?;
+    child
+        .child("src")
+        .child("child")
+        .child("__init__.py")
+        .touch()?;
+
+    // Generate a lockfile.
+    context.lock().assert().success();
+
+    // Sync all workspace members.
+    uv_snapshot!(context.filters(), context.sync().arg("--all-packages"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 6 packages in [TIME]
+    Prepared 6 packages in [TIME]
+    Installed 6 packages in [TIME]
+     + anyio==4.3.0
+     + child==0.1.0 (from file://[TEMP_DIR]/child)
+     + idna==3.6
+     + iniconfig==2.0.0
+     + project==0.1.0 (from file://[TEMP_DIR]/)
+     + sniffio==1.3.1
+    "###);
+
+    Ok(())
+}
+
+/// Sync all members in a workspace with extras attached.
+#[test]
+fn sync_all_extras() -> 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 = ["child"]
+
+        [project.optional-dependencies]
+        types = ["sniffio>1"]
+        async = ["anyio>3"]
+
+        [build-system]
+        requires = ["setuptools>=42"]
+        build-backend = "setuptools.build_meta"
+
+        [tool.uv.workspace]
+        members = ["child"]
+
+        [tool.uv.sources]
+        child = { workspace = true }
+        "#,
+    )?;
+    context
+        .temp_dir
+        .child("src")
+        .child("project")
+        .child("__init__.py")
+        .touch()?;
+
+    // Add a workspace member.
+    let child = context.temp_dir.child("child");
+    child.child("pyproject.toml").write_str(
+        r#"
+        [project]
+        name = "child"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["iniconfig>=1"]
+
+        [project.optional-dependencies]
+        types = ["typing-extensions>=4"]
+        testing = ["packaging>=24"]
+
+        [build-system]
+        requires = ["setuptools>=42"]
+        build-backend = "setuptools.build_meta"
+        "#,
+    )?;
+    child
+        .child("src")
+        .child("child")
+        .child("__init__.py")
+        .touch()?;
+
+    // Generate a lockfile.
+    context.lock().assert().success();
+
+    // Sync an extra that exists in both the parent and child.
+    uv_snapshot!(context.filters(), context.sync().arg("--all-packages").arg("--extra").arg("types"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    Prepared 5 packages in [TIME]
+    Installed 5 packages in [TIME]
+     + child==0.1.0 (from file://[TEMP_DIR]/child)
+     + iniconfig==2.0.0
+     + project==0.1.0 (from file://[TEMP_DIR]/)
+     + sniffio==1.3.1
+     + typing-extensions==4.10.0
+    "###);
+
+    // Sync an extra that only exists in the child.
+    uv_snapshot!(context.filters(), context.sync().arg("--all-packages").arg("--extra").arg("testing"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    Prepared 1 package in [TIME]
+    Uninstalled 2 packages in [TIME]
+    Installed 1 package in [TIME]
+     + packaging==24.0
+     - sniffio==1.3.1
+     - typing-extensions==4.10.0
+    "###);
+
+    // Sync all extras.
+    uv_snapshot!(context.filters(), context.sync().arg("--all-packages").arg("--all-extras"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    Prepared 2 packages in [TIME]
+    Installed 4 packages in [TIME]
+     + anyio==4.3.0
+     + idna==3.6
+     + sniffio==1.3.1
+     + typing-extensions==4.10.0
+    "###);
+
+    Ok(())
+}
+
+/// Sync all members in a workspace with dependency groups attached.
+#[test]
+fn sync_all_groups() -> 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 = ["child"]
+
+        [dependency-groups]
+        types = ["sniffio>=1"]
+        async = ["anyio>=3"]
+
+        [build-system]
+        requires = ["setuptools>=42"]
+        build-backend = "setuptools.build_meta"
+
+        [tool.uv.workspace]
+        members = ["child"]
+
+        [tool.uv.sources]
+        child = { workspace = true }
+        "#,
+    )?;
+    context
+        .temp_dir
+        .child("src")
+        .child("project")
+        .child("__init__.py")
+        .touch()?;
+
+    // Add a workspace member.
+    let child = context.temp_dir.child("child");
+    child.child("pyproject.toml").write_str(
+        r#"
+        [project]
+        name = "child"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["iniconfig>=1"]
+
+        [dependency-groups]
+        types = ["typing-extensions>=4"]
+        testing = ["packaging>=24"]
+
+        [build-system]
+        requires = ["setuptools>=42"]
+        build-backend = "setuptools.build_meta"
+        "#,
+    )?;
+    child
+        .child("src")
+        .child("child")
+        .child("__init__.py")
+        .touch()?;
+
+    // Generate a lockfile.
+    context.lock().assert().success();
+
+    // Sync a group that exists in both the parent and child.
+    uv_snapshot!(context.filters(), context.sync().arg("--all-packages").arg("--group").arg("types"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    Prepared 5 packages in [TIME]
+    Installed 5 packages in [TIME]
+     + child==0.1.0 (from file://[TEMP_DIR]/child)
+     + iniconfig==2.0.0
+     + project==0.1.0 (from file://[TEMP_DIR]/)
+     + sniffio==1.3.1
+     + typing-extensions==4.10.0
+    "###);
+
+    // Sync a group that only exists in the child.
+    uv_snapshot!(context.filters(), context.sync().arg("--all-packages").arg("--group").arg("testing"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    Prepared 1 package in [TIME]
+    Uninstalled 2 packages in [TIME]
+    Installed 1 package in [TIME]
+     + packaging==24.0
+     - sniffio==1.3.1
+     - typing-extensions==4.10.0
+    "###);
+
+    // Sync a group that doesn't exist.
+    uv_snapshot!(context.filters(), context.sync().arg("--all-packages").arg("--group").arg("foo"), @r###"
+    success: false
+    exit_code: 2
+    ----- stdout -----
+
+    ----- stderr -----
+    error: Group `foo` is not defined in any project's `dependency-group` table
+    "###);
+
+    Ok(())
+}

docs/reference/cli.md

@@ -1369,6 +1369,12 @@ uv sync [OPTIONS]
 
 <p>Note that all optional dependencies are always included in the resolution; this option only affects the selection of packages to install.</p>
 
+</dd><dt><code>--all-packages</code></dt><dd><p>Sync all packages in the workspace.</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>
@@ -7260,7 +7266,7 @@ uv build [OPTIONS] [SRC]
 
 <h3 class="cli-reference">Options</h3>
 
-<dl class="cli-reference"><dt><code>--all</code></dt><dd><p>Builds all packages in the workspace.</p>
+<dl class="cli-reference"><dt><code>--all-packages</code></dt><dd><p>Builds all packages in the workspace.</p>
 
 <p>The workspace will be discovered from the provided source directory, or the current directory if no source directory is provided.</p>