Respect --project in uv version

crates/uv/src/commands/version.rs

@@ -13,7 +13,7 @@ use uv_warnings::warn_user;
 use uv_workspace::pyproject_mut::Error;
 use uv_workspace::{
     pyproject_mut::{DependencyTarget, PyProjectTomlMut},
-    DiscoveryOptions, Workspace, WorkspaceCache,
+    DiscoveryOptions, ProjectWorkspace, WorkspaceCache,
 };
 
 use crate::{commands::ExitStatus, printer::Printer};
@@ -43,8 +43,12 @@ pub(crate) async fn project_version(
     printer: Printer,
 ) -> Result<ExitStatus> {
     // Read the metadata
-    let workspace = match Workspace::discover(project_dir, &DiscoveryOptions::default(), cache)
-        .await
+    let workspace = match ProjectWorkspace::discover(
+        project_dir,
+        &DiscoveryOptions::default(),
+        cache,
+    )
+    .await
     {
         Ok(workspace) => workspace,
         Err(err) => {
@@ -59,11 +63,12 @@ pub(crate) async fn project_version(
     };
 
     let mut pyproject = PyProjectTomlMut::from_toml(
-        &workspace.pyproject_toml().raw,
+        &workspace.current_project().pyproject_toml().raw,
         DependencyTarget::PyProjectToml,
     )?;
-    let pyproject_path = workspace.install_path().join("pyproject.toml");
+    let pyproject_path = workspace.current_project().root().join("pyproject.toml");
     let name = workspace
+        .current_project()
         .pyproject_toml()
         .project
         .as_ref()

crates/uv/tests/it/version.rs

@@ -1,4 +1,5 @@
 use anyhow::{Ok, Result};
+use assert_cmd::assert::OutputAssertExt;
 use assert_fs::prelude::*;
 use insta::assert_snapshot;
 
@@ -827,7 +828,7 @@ fn version_get_fallback_unmanaged() -> Result<()> {
         [project]
         name = "myapp"
         version = "0.1.2"
-        
+
         [tool.uv]
         managed = false
         "#,
@@ -869,7 +870,7 @@ fn version_get_fallback_unmanaged_short() -> Result<()> {
         [project]
         name = "myapp"
         version = "0.1.2"
-        
+
         [tool.uv]
         managed = false
         "#,
@@ -920,7 +921,7 @@ fn version_get_fallback_unmanaged_json() -> Result<()> {
         [project]
         name = "myapp"
         version = "0.1.2"
-        
+
         [tool.uv]
         managed = false
         "#,
@@ -992,7 +993,7 @@ fn version_get_fallback_unmanaged_strict() -> Result<()> {
         [project]
         name = "myapp"
         version = "0.1.2"
-        
+
         [tool.uv]
         managed = false
         "#,
@@ -1206,3 +1207,65 @@ fn self_version_json() -> Result<()> {
     );
     Ok(())
 }
+
+// Ensure that the global `--project` option is respected.
+#[test]
+fn version_get_workspace() -> Result<()> {
+    let context = TestContext::new("3.12");
+
+    let pyproject_toml = context.temp_dir.child("pyproject.toml");
+    pyproject_toml.write_str(
+        r#"
+        [project]
+        name = "myproject"
+        version = "1.10.31"
+        requires-python = ">=3.12"
+        "#,
+    )?;
+
+    context
+        .init()
+        .arg("--lib")
+        .arg("workspace-member")
+        .assert()
+        .success();
+
+    uv_snapshot!(context.filters(), context.version().arg("--project").arg(context.temp_dir.as_ref()), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    myproject 1.10.31
+
+    ----- stderr -----
+    ");
+
+    uv_snapshot!(context.filters(), context.version().arg("--project").arg(context.temp_dir.join("workspace-member")), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    workspace-member 0.1.0
+
+    ----- stderr -----
+    ");
+
+    pyproject_toml.write_str(
+        r#"
+        [tool.uv.workspace]
+        members = ["workspace-member"]
+        "#,
+    )?;
+
+    // A virtual project root has a no version.
+    // TODO(konsti): Show a dedicated error message for virtual workspace roots (generally, not
+    // only for `uv version`)
+    uv_snapshot!(context.filters(), context.version().arg("--project").arg(context.temp_dir.as_ref()), @r"
+    success: false
+    exit_code: 2
+    ----- stdout -----
+
+    ----- stderr -----
+    error: No `project` table found in: `[TEMP_DIR]/pyproject.toml`
+    ");
+
+    Ok(())
+}