cargo doc --open respect forced-target

src/cargo/ops/cargo_doc.rs

@@ -24,7 +24,17 @@ pub fn doc(ws: &Workspace<'_>, options: &DocOptions) -> CargoResult<()> {
             .root_crate_names
             .get(0)
             .ok_or_else(|| anyhow::anyhow!("no crates with documentation"))?;
-        let kind = options.compile_opts.build_config.single_requested_kind()?;
+        let pkg = ws
+            .members()
+            .find(|p| p.name().to_string() == *name.clone().replace("_", "-"))
+            .unwrap();
+        let kind = if let Some(forced_kind) = pkg.manifest().forced_kind() {
+            // If the package's manifest specifies a forced kind, use that
+            forced_kind
+        } else {
+            // Otherwise, use the single requested kind specified in the compile options
+            options.compile_opts.build_config.single_requested_kind()?
+        };
         let path = compilation.root_output[&kind]
             .with_file_name("doc")
             .join(&name)