Accept multiple packages in uv export (#16603)

## Summary

Closes https://github.com/astral-sh/uv/issues/16503.

crates/uv-cli/src/lib.rs

@@ -1035,8 +1035,8 @@ pub enum ProjectCommand {
     /// uv will search for a project in the current directory or any parent directory. If a project
     /// cannot be found, uv will exit with an error.
     ///
-    /// If operating in a workspace, the root will be exported by default; however, a specific
-    /// member can be selected using the `--package` option.
+    /// If operating in a workspace, the root will be exported by default; however, specific
+    /// members can be selected using the `--package` option.
     #[command(
         after_help = "Use `uv help export` for more details.",
         after_long_help = ""
@@ -4320,11 +4320,11 @@ pub struct ExportArgs {
     #[arg(long, conflicts_with = "package")]
     pub all_packages: bool,
 
-    /// Export the dependencies for a specific package in the workspace.
+    /// Export the dependencies for specific packages in the workspace.
     ///
-    /// If the workspace member does not exist, uv will exit with an error.
+    /// If any workspace member does not exist, uv will exit with an error.
     #[arg(long, conflicts_with = "all_packages")]
-    pub package: Option<PackageName>,
+    pub package: Vec<PackageName>,
 
     /// Prune the given package from the dependency tree.
     ///

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

@@ -57,7 +57,7 @@ pub(crate) async fn export(
     project_dir: &Path,
     format: Option<ExportFormat>,
     all_packages: bool,
-    package: Option<PackageName>,
+    package: Vec<PackageName>,
     prune: Vec<PackageName>,
     hashes: bool,
     install_options: InstallOptions,
@@ -98,16 +98,28 @@ pub(crate) async fn export(
                 &workspace_cache,
             )
             .await?
-        } else if let Some(package) = package.as_ref() {
+        } else if let [name] = package.as_slice() {
             VirtualProject::Project(
                 Workspace::discover(project_dir, &DiscoveryOptions::default(), &workspace_cache)
                     .await?
-                    .with_current_project(package.clone())
-                    .with_context(|| format!("Package `{package}` not found in workspace"))?,
+                    .with_current_project(name.clone())
+                    .with_context(|| format!("Package `{name}` not found in workspace"))?,
             )
         } else {
-            VirtualProject::discover(project_dir, &DiscoveryOptions::default(), &workspace_cache)
-                .await?
+            let project = VirtualProject::discover(
+                project_dir,
+                &DiscoveryOptions::default(),
+                &workspace_cache,
+            )
+            .await?;
+
+            for name in &package {
+                if !project.workspace().packages().contains_key(name) {
+                    return Err(anyhow::anyhow!("Package `{name}` not found in workspace"));
+                }
+            }
+
+            project
         };
         ExportTarget::Project(project)
     };
@@ -219,18 +231,24 @@ pub(crate) async fn export(
                     workspace: project.workspace(),
                     lock: &lock,
                 }
-            } else if let Some(package) = package.as_ref() {
-                InstallTarget::Project {
-                    workspace: project.workspace(),
-                    name: package,
-                    lock: &lock,
-                }
             } else {
-                // By default, install the root package.
-                InstallTarget::Project {
-                    workspace: project.workspace(),
-                    name: project.project_name(),
-                    lock: &lock,
+                match package.as_slice() {
+                    // By default, install the root project.
+                    [] => InstallTarget::Project {
+                        workspace: project.workspace(),
+                        name: project.project_name(),
+                        lock: &lock,
+                    },
+                    [name] => InstallTarget::Project {
+                        workspace: project.workspace(),
+                        name,
+                        lock: &lock,
+                    },
+                    names => InstallTarget::Projects {
+                        workspace: project.workspace(),
+                        names,
+                        lock: &lock,
+                    },
                 }
             }
         }
@@ -240,17 +258,23 @@ pub(crate) async fn export(
                     workspace,
                     lock: &lock,
                 }
-            } else if let Some(package) = package.as_ref() {
-                InstallTarget::Project {
-                    workspace,
-                    name: package,
-                    lock: &lock,
-                }
             } else {
-                // By default, install the entire workspace.
-                InstallTarget::NonProjectWorkspace {
-                    workspace,
-                    lock: &lock,
+                match package.as_slice() {
+                    // By default, install the entire workspace.
+                    [] => InstallTarget::NonProjectWorkspace {
+                        workspace,
+                        lock: &lock,
+                    },
+                    [name] => InstallTarget::Project {
+                        workspace,
+                        name,
+                        lock: &lock,
+                    },
+                    names => InstallTarget::Projects {
+                        workspace,
+                        names,
+                        lock: &lock,
+                    },
                 }
             }
         }

crates/uv/src/settings.rs

@@ -1965,7 +1965,7 @@ impl TreeSettings {
 pub(crate) struct ExportSettings {
     pub(crate) format: Option<ExportFormat>,
     pub(crate) all_packages: bool,
-    pub(crate) package: Option<PackageName>,
+    pub(crate) package: Vec<PackageName>,
     pub(crate) prune: Vec<PackageName>,
     pub(crate) extras: ExtrasSpecification,
     pub(crate) groups: DependencyGroups,

crates/uv/tests/it/export.rs

@@ -4660,3 +4660,147 @@ fn export_lock_workspace_mismatch_with_frozen() -> Result<()> {
 
     Ok(())
 }
+
+/// Export multiple packages within a workspace.
+#[test]
+fn multiple_packages() -> Result<()> {
+    let context = TestContext::new("3.12");
+
+    let pyproject_toml = context.temp_dir.child("pyproject.toml");
+    pyproject_toml.write_str(
+        r#"
+        [project]
+        name = "root"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["foo", "bar", "baz"]
+
+        [tool.uv.sources]
+        foo = { workspace = true }
+        bar = { workspace = true }
+        baz = { workspace = true }
+
+        [tool.uv.workspace]
+        members = ["packages/*"]
+        "#,
+    )?;
+
+    context
+        .temp_dir
+        .child("packages")
+        .child("foo")
+        .child("pyproject.toml")
+        .write_str(
+            r#"
+        [project]
+        name = "foo"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["anyio"]
+        "#,
+        )?;
+
+    context
+        .temp_dir
+        .child("packages")
+        .child("bar")
+        .child("pyproject.toml")
+        .write_str(
+            r#"
+        [project]
+        name = "bar"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["typing-extensions"]
+        "#,
+        )?;
+
+    context
+        .temp_dir
+        .child("packages")
+        .child("baz")
+        .child("pyproject.toml")
+        .write_str(
+            r#"
+        [project]
+        name = "baz"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["iniconfig"]
+        "#,
+        )?;
+
+    context.lock().assert().success();
+
+    // Export `foo` and `bar`.
+    uv_snapshot!(context.filters(), context.export()
+        .arg("--package").arg("foo")
+        .arg("--package").arg("bar"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    # This file was autogenerated by uv via the following command:
+    #    uv export --cache-dir [CACHE_DIR] --package foo --package bar
+    -e ./packages/bar
+    -e ./packages/foo
+    anyio==4.3.0 \
+        --hash=sha256:048e05d0f6caeed70d731f3db756d35dcc1f35747c8c403364a8332c630441b8 \
+        --hash=sha256:f75253795a87df48568485fd18cdd2a3fa5c4f7c5be8e5e36637733fce06fed6
+        # via foo
+    idna==3.6 \
+        --hash=sha256:9ecdbbd083b06798ae1e86adcbfe8ab1479cf864e4ee30fe4e46a003d12491ca \
+        --hash=sha256:c05567e9c24a6b9faaa835c4821bad0590fbb9d5779e7caa6e1cc4978e7eb24f
+        # via anyio
+    sniffio==1.3.1 \
+        --hash=sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2 \
+        --hash=sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc
+        # via anyio
+    typing-extensions==4.10.0 \
+        --hash=sha256:69b1a937c3a517342112fb4c6df7e72fc39a38e7891a5730ed4985b5214b5475 \
+        --hash=sha256:b0abd7c89e8fb96f98db18d86106ff1d90ab692004eb746cf6eda2682f91b3cb
+        # via bar
+
+    ----- stderr -----
+    Resolved 9 packages in [TIME]
+    "###);
+
+    // Export `foo`, `bar`, and `baz`.
+    uv_snapshot!(context.filters(), context.export()
+        .arg("--package").arg("foo")
+        .arg("--package").arg("bar")
+        .arg("--package").arg("baz"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    # This file was autogenerated by uv via the following command:
+    #    uv export --cache-dir [CACHE_DIR] --package foo --package bar --package baz
+    -e ./packages/bar
+    -e ./packages/baz
+    -e ./packages/foo
+    anyio==4.3.0 \
+        --hash=sha256:048e05d0f6caeed70d731f3db756d35dcc1f35747c8c403364a8332c630441b8 \
+        --hash=sha256:f75253795a87df48568485fd18cdd2a3fa5c4f7c5be8e5e36637733fce06fed6
+        # via foo
+    idna==3.6 \
+        --hash=sha256:9ecdbbd083b06798ae1e86adcbfe8ab1479cf864e4ee30fe4e46a003d12491ca \
+        --hash=sha256:c05567e9c24a6b9faaa835c4821bad0590fbb9d5779e7caa6e1cc4978e7eb24f
+        # via anyio
+    iniconfig==2.0.0 \
+        --hash=sha256:2d91e135bf72d31a410b17c16da610a82cb55f6b0477d1a902134b24a455b8b3 \
+        --hash=sha256:b6a85871a79d2e3b22d2d1b94ac2824226a63c6b741c88f7ae975f18b6778374
+        # via baz
+    sniffio==1.3.1 \
+        --hash=sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2 \
+        --hash=sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc
+        # via anyio
+    typing-extensions==4.10.0 \
+        --hash=sha256:69b1a937c3a517342112fb4c6df7e72fc39a38e7891a5730ed4985b5214b5475 \
+        --hash=sha256:b0abd7c89e8fb96f98db18d86106ff1d90ab692004eb746cf6eda2682f91b3cb
+        # via bar
+
+    ----- stderr -----
+    Resolved 9 packages in [TIME]
+    "###);
+
+    Ok(())
+}