feat: lockfile path implies --locked on cargo install

src/cargo/core/workspace.rs

@@ -662,6 +662,10 @@ impl<'gctx> Workspace<'gctx> {
  self.requested_lockfile_path = path;
  }
 
+ pub fn get_requested_lockfile_path(&mut self) -> Option<&PathBuf> {
+ self.requested_lockfile_path.as_ref()
+ }
+
  /// Get the lowest-common denominator `package.rust-version` within the workspace, if specified
  /// anywhere
  pub fn rust_version(&self) -> Option<&RustVersion> {

src/cargo/ops/cargo_install.rs

@@ -825,6 +825,10 @@ fn make_ws_rustc_target<'gctx>(
  ws
  };
  ws.set_ignore_lock(gctx.lock_update_allowed());
+ // if --lockfile-path is set, imply --locked
+ if ws.get_requested_lockfile_path().is_some() {
+ ws.set_ignore_lock(false);
+ }
  ws.set_require_optional_deps(false);
 
  let rustc = gctx.load_global_rustc(Some(&ws))?;