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 #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"))]
-    pub all: bool,
+    #[arg(long, alias = "all", conflicts_with("package"))]
+    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 {
-        Self::FrozenMember(project.workspace(), package_name)
+    pub fn frozen(project: &'env VirtualProject, package_name: &'env PackageName) -> Self {
+        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::FrozenMember(workspace, _) => workspace,
+            Self::NonProjectWorkspace(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::FrozenMember(_, package_name) => Either::Left(std::iter::once(*package_name)),
+            Self::NonProjectWorkspace(workspace) => Either::Right(workspace.packages().keys()),
+            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::NonProject(workspace) => {
+            Self::Workspace(_) | Self::Project(_) | Self::FrozenProject(..) => Ok(BTreeMap::new()),
+            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::FrozenMember(_, package_name) => Some(package_name),
+            Self::NonProjectWorkspace(_) => None,
+            Self::FrozenProject(_, package_name) => Some(package_name),
+        }
+    }
+
+    pub fn from_workspace(workspace: &'env VirtualProject) -> Self {
+        match workspace {
+            VirtualProject::Project(project) => Self::Workspace(project.workspace()),
+            VirtualProject::NonProject(workspace) => Self::NonProjectWorkspace(workspace),
         }
     }
-}
 
-impl<'env> From<&'env VirtualProject> for InstallTarget<'env> {
-    fn from(project: &'env VirtualProject) -> Self {
+    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!(
@@ -201,18 +201,18 @@ 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"
             ));
         }
 
         let workspace = match workspace {
             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};
@@ -1369,16 +1369,22 @@ 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
         .groups()
         .into_iter()
         .flat_map(GroupsSpecification::names)
     {
-        match project {
-            VirtualProject::Project(project) => {
+        match target {
+            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) => {
-                // 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()));
-                    }
-                }
-            }
+            InstallTarget::FrozenProject(_, _) => {}
         }
     }
     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,