Add --no-project alias for uv python pin --no-workspace (#6514)

This matches the other interfaces and seems like an oversight.

crates/uv-cli/src/lib.rs

@@ -3061,13 +3061,13 @@ pub struct PythonPinArgs {
     #[arg(long, overrides_with("no_resolved"), hide = true)]
     pub no_resolved: bool,
 
-    /// Avoid validating the Python pin is compatible with the workspace.
+    /// Avoid validating the Python pin is compatible with the project or workspace.
     ///
-    /// By default, a workspace is discovered in the current directory or any parent
-    /// directory. If a workspace is found, the Python pin is validated against
-    /// the workspace's `requires-python` constraint.
-    #[arg(long)]
-    pub no_workspace: bool,
+    /// By default, a project or workspace is discovered in the current directory or any parent
+    /// directory. If a workspace is found, the Python pin is validated against the workspace's
+    /// `requires-python` constraint.
+    #[arg(long, alias = "no-workspace")]
+    pub no_project: bool,
 }
 
 #[derive(Args)]

crates/uv/src/commands/python/pin.rs

@@ -22,11 +22,11 @@ pub(crate) async fn pin(
     request: Option<String>,
     resolved: bool,
     python_preference: PythonPreference,
-    no_workspace: bool,
+    no_project: bool,
     cache: &Cache,
     printer: Printer,
 ) -> Result<ExitStatus> {
-    let virtual_project = if no_workspace {
+    let virtual_project = if no_project {
         None
     } else {
         match VirtualProject::discover(&CWD, &DiscoveryOptions::default()).await {

crates/uv/src/lib.rs

@@ -961,7 +961,7 @@ async fn run(cli: Cli) -> Result<ExitStatus> {
                 args.request,
                 args.resolved,
                 globals.python_preference,
-                args.no_workspace,
+                args.no_project,
                 &cache,
                 printer,
             )

crates/uv/src/settings.rs

@@ -588,7 +588,7 @@ impl PythonFindSettings {
 pub(crate) struct PythonPinSettings {
     pub(crate) request: Option<String>,
     pub(crate) resolved: bool,
-    pub(crate) no_workspace: bool,
+    pub(crate) no_project: bool,
 }
 
 impl PythonPinSettings {
@@ -599,13 +599,13 @@ impl PythonPinSettings {
             request,
             no_resolved,
             resolved,
-            no_workspace,
+            no_project,
         } = args;
 
         Self {
             request,
             resolved: flag(resolved, no_resolved).unwrap_or(false),
-            no_workspace,
+            no_project,
         }
     }
 }

crates/uv/tests/python_pin.rs

@@ -264,17 +264,38 @@ fn python_pin_compatible_with_requires_python() -> anyhow::Result<()> {
     error: The requested Python version `cpython@3.10` is incompatible with the project `requires-python` value of `>=3.11`.
     "###);
 
+    // Request an incompatible version with project discovery turned off
+    uv_snapshot!(context.filters(), context.python_pin().arg("cpython@3.10").arg("--no-project"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    Pinned `.python-version` to `cpython@3.10`
+
+    ----- stderr -----
+    "###);
+
+    // And, as an alias, workspace discovery
+    uv_snapshot!(context.filters(), context.python_pin().arg("cpython@3.10").arg("--no-workspace"), @r###"
+    success: true
+    exit_code: 0