Add --group and --only-group to uv sync and includes all groups…

… in `uv lock`

crates/uv-cli/src/lib.rs

@@ -2719,6 +2719,20 @@ pub struct SyncArgs {
     #[arg(long, conflicts_with("no_dev"))]
     pub only_dev: bool,
 
+    /// Include dependencies from the specified local dependency group.
+    ///
+    /// May be provided multiple times.
+    #[arg(long, conflicts_with("only_group"))]
+    pub group: Vec<GroupName>,
+
+    /// Only include dependencies from the specified local dependency group.
+    ///
+    /// May be provided multiple times.
+    ///
+    /// The project itself will also be omitted.
+    #[arg(long, conflicts_with("group"))]
+    pub only_group: Vec<GroupName>,
+
     /// Install any editable dependencies, including the project and any workspace members, as
     /// non-editable.
     #[arg(long)]

crates/uv-configuration/src/dev.rs

@@ -61,3 +61,39 @@ impl From<DevMode> for DevSpecification {
         }
     }
 }
+
+impl DevSpecification {
+    /// Determine the [`DevSpecification`] policy from the command-line arguments.
+    pub fn from_args(
+        dev: bool,
+        no_dev: bool,
+        only_dev: bool,
+        group: Vec<GroupName>,
+        only_group: Vec<GroupName>,
+    ) -> Self {
+        let from_mode = DevSpecification::from(DevMode::from_args(dev, no_dev, only_dev));
+        if !group.is_empty() {
+            match from_mode {
+                DevSpecification::Exclude => Self::Include(group),
+                DevSpecification::Include(dev) => {
+                    Self::Include(group.into_iter().chain(dev).collect())
+                }
+                DevSpecification::Only(_) => {
+                    unreachable!("cannot specify both `--only-dev` and `--group`")
+                }
+            }
+        } else if !only_group.is_empty() {
+            match from_mode {
+                DevSpecification::Exclude => Self::Only(only_group),
+                DevSpecification::Only(dev) => {
+                    Self::Only(only_group.into_iter().chain(dev).collect())
+                }
+                // TODO(zanieb): `dev` defaults to true we can't tell if `--dev` was provided in
+                // conflict with `--only-group` here
+                DevSpecification::Include(_) => Self::Only(only_group),
+            }
+        } else {
+            from_mode
+        }
+    }
+}

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

@@ -267,7 +267,13 @@ async fn do_lock(
     let requirements = workspace.non_project_requirements().collect::<Vec<_>>();
     let overrides = workspace.overrides().into_iter().collect::<Vec<_>>();
     let constraints = workspace.constraints();
-    let dev = vec![DEV_DEPENDENCIES.clone()];
+    let dev: Vec<_> = workspace
+        .pyproject_toml()
+        .dependency_groups
+        .iter()
+        .flat_map(|groups| groups.keys().cloned())
+        .chain(std::iter::once(DEV_DEPENDENCIES.clone()))
+        .collect();
     let source_trees = vec![];
 
     // Collect the list of members.

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

@@ -14,7 +14,7 @@ use std::str::FromStr;
 use uv_cache::Cache;
 use uv_client::{Connectivity, FlatIndexClient, RegistryClientBuilder};
 use uv_configuration::{
-    Concurrency, Constraints, DevMode, DevSpecification, EditableMode, ExtrasSpecification,
+    Concurrency, Constraints, DevSpecification, EditableMode, ExtrasSpecification,
     HashCheckingMode, InstallOptions,
 };
 use uv_dispatch::BuildDispatch;
@@ -40,7 +40,7 @@ pub(crate) async fn sync(
     frozen: bool,
     package: Option<PackageName>,
     extras: ExtrasSpecification,
-    dev: DevMode,
+    dev: DevSpecification,
     editable: EditableMode,
     install_options: InstallOptions,
     modifications: Modifications,
@@ -150,7 +150,7 @@ pub(crate) async fn sync(
         &venv,
         &lock,
         &extras,
-        &DevSpecification::from(dev),
+        &dev,
         editable,
         install_options,
         modifications,

crates/uv/src/settings.rs

@@ -19,10 +19,10 @@ use uv_cli::{
 };
 use uv_client::Connectivity;
 use uv_configuration::{
-    BuildOptions, Concurrency, ConfigSettings, DevMode, EditableMode, ExportFormat,
-    ExtrasSpecification, HashCheckingMode, IndexStrategy, InstallOptions, KeyringProviderType,
-    NoBinary, NoBuild, PreviewMode, Reinstall, SourceStrategy, TargetTriple, TrustedHost,
-    TrustedPublishing, Upgrade, VersionControlSystem,
+    BuildOptions, Concurrency, ConfigSettings, DevMode, DevSpecification, EditableMode,
+    ExportFormat, ExtrasSpecification, HashCheckingMode, IndexStrategy, InstallOptions,
+    KeyringProviderType, NoBinary, NoBuild, PreviewMode, Reinstall, SourceStrategy, TargetTriple,
+    TrustedHost, TrustedPublishing, Upgrade, VersionControlSystem,
 };
 use uv_distribution_types::{DependencyMetadata, IndexLocations};
 use uv_install_wheel::linker::LinkMode;
@@ -686,7 +686,7 @@ pub(crate) struct SyncSettings {
     pub(crate) locked: bool,
     pub(crate) frozen: bool,
     pub(crate) extras: ExtrasSpecification,
-    pub(crate) dev: DevMode,
+    pub(crate) dev: DevSpecification,
     pub(crate) editable: EditableMode,
     pub(crate) install_options: InstallOptions,
     pub(crate) modifications: Modifications,
@@ -707,6 +707,8 @@ impl SyncSettings {
             dev,
             no_dev,
             only_dev,
+            group,
+            only_group,
             no_editable,
             inexact,
             exact,
@@ -734,7 +736,7 @@ impl SyncSettings {
                 flag(all_extras, no_all_extras).unwrap_or_default(),
                 extra.unwrap_or_default(),
             ),
-            dev: DevMode::from_args(dev, no_dev, only_dev),
+            dev: DevSpecification::from_args(dev, no_dev, only_dev, group, only_group),
             editable: EditableMode::from_args(no_editable),
             install_options: InstallOptions::new(
                 no_install_project,

docs/reference/cli.md

@@ -1341,6 +1341,10 @@ uv sync [OPTIONS]
 
 <p>Instead of checking if the lockfile is up-to-date, uses the versions in the lockfile as the source of truth. If the lockfile is missing, uv will exit with an error. If the <code>pyproject.toml</code> includes changes to dependencies that have not been included in the lockfile yet, they will not be present in the environment.</p>
 
+</dd><dt><code>--group</code> <i>group</i></dt><dd><p>Include dependencies from the specified local dependency group.</p>
+
+<p>May be provided multiple times.</p>
+
 </dd><dt><code>--help</code>, <code>-h</code></dt><dd><p>Display the concise help for this command</p>
 
 </dd><dt><code>--index-strategy</code> <i>index-strategy</i></dt><dd><p>The strategy to use when resolving against multiple index URLs.</p>
@@ -1472,6 +1476,12 @@ uv sync [OPTIONS]
 
 <p>The project itself will also be omitted.</p>
 
+</dd><dt><code>--only-group</code> <i>only-group</i></dt><dd><p>Only include dependencies from the specified local dependency group.</p>
+
+<p>May be provided multiple times.</p>
+
+<p>The project itself will also be omitted.</p>
+
 </dd><dt><code>--package</code> <i>package</i></dt><dd><p>Sync for a specific package in the workspace.</p>
 
 <p>The workspace&#8217;s environment (<code>.venv</code>) is updated to reflect the subset of dependencies declared by the specified workspace member package.</p>