fix(sdk): distinguish mapped roots from external launcher links

crates/ide-host/src/ops/run.rs

@@ -75,7 +75,7 @@ pub fn save_configs(
     let configs: Vec<RunConfig> = configs
         .iter()
         .map(|c| match c.kind.as_str() {
-            "gradle" => c.clone(),
+            "gradle" | "maven" => c.clone(),
             _ => ide_sdk::apply::without_derived(c, &project.root, &settings),
         })
         .collect();

crates/ide-sdk/src/apply.rs

@@ -241,13 +241,20 @@ pub fn prepare_maven_run(config: &mut RunConfig, root: &Path, s: &Settings) {
         }
     } else if config.detected || config.id.starts_with("context:") {
         let saved = ide_run::load_user_configs(root).unwrap_or_default();
-        let source = ide_run::detect(root).into_iter().find(|base| {
-            base.kind == "maven"
-                && (config.id == base.id
-                    || config.id.starts_with(&format!("context:{}:", base.id))
-                    || config.id.starts_with(&format!("context:target:context:{}:", base.id)))
-                && !saved.iter().any(|user| user.id == base.id)
-        });
+        let id = config
+            .id
+            .strip_prefix("context:target:context:")
+            .or_else(|| config.id.strip_prefix("context:"))
+            .unwrap_or(&config.id);
+        let id = id.strip_prefix("workspace:").and_then(|id| id.split_once(':')).map_or(id, |(_, id)| id);
+        let source = ide_run::detect(root)
+            .into_iter()
+            .filter(|base| {
+                base.kind == "maven"
+                    && (id == base.id || id.starts_with(&format!("{}:", base.id)))
+                    && !saved.iter().any(|user| user.id == base.id)
+            })
+            .max_by_key(|base| base.id.len());
         if let Some(base) = source.filter(|_| config.extras.params.is_empty()) {
             if let Some(prefix) = maven_settings_prefixes(&config.args)
                 .into_iter()

crates/ide-sdk/src/discover.rs

@@ -699,6 +699,11 @@ mod maven_path_tests {
         assert_eq!(launch_path(&launcher).unwrap(), launcher);
         assert_eq!(maven_home(&home), Some(home.clone()));
         assert_eq!(maven_version(&home).as_deref(), Some("3.9.16"));
+        let jdk = drive.root.join("jdk");
+        std::fs::create_dir_all(jdk.join("bin")).unwrap();
+        std::fs::write(jdk.join("bin/java.exe"), "").unwrap();
+        std::fs::write(jdk.join("release"), "JAVA_VERSION=\"17.0.9\"\n").unwrap();
+        assert_eq!(crate::java::jdk_at(&jdk).unwrap().home, jdk);
     }
 
     #[test]

crates/ide-sdk/src/lib.rs

@@ -83,7 +83,7 @@ pub(crate) fn exe(name: &str) -> String {
 }
 
 /// `path` with symlinks resolved (Homebrew's `bin/mvn` → its Cellar), except that a Windows
-/// drive letter is kept: on a mapped network drive or a `subst` drive canonicalizing gives
+/// mapped drive letter is kept when the target stays inside that drive: canonicalizing gives
 /// `\\?\UNC\server\share\…` or another drive, and cmd.exe can't start a script from a
 /// `\\?\` path (`mvn.cmd`, or `mvn.cmd` with such a `JAVA_HOME`), nor is it the path the user knows.
 pub(crate) fn launch_path(path: &Path) -> std::io::Result<PathBuf> {
@@ -101,7 +101,12 @@ pub(crate) fn launch_path(path: &Path) -> std::io::Result<PathBuf> {
         if let Some(d) = drive(path)
             && drive(&real) != Some(d)
         {
-            return std::path::absolute(path);
+            let root = PathBuf::from(format!("{}:\\", char::from(d)));
+            if let Ok(mapped) = dunce::canonicalize(&root)
+                && let Ok(relative) = real.strip_prefix(mapped)
+            {
+                return Ok(root.join(relative));
+            }
         }
     }
     Ok(real)

crates/ide-sdk/src/tests.rs

@@ -305,6 +305,8 @@ fn maven_launch_refreshes_legacy_defaults_but_keeps_user_overrides() {
         "maven:test",
         "context:maven:test:src/test/java/ExampleTest.java",
         "context:target:context:maven:test:src/test/java/ExampleTest.java:ExampleTest#example",
+        "workspace:abc:maven:test",
+        "context:target:context:workspace:abc:maven:test:src/test/java/ExampleTest.java:ExampleTest#example",
     ] {
         let mut config = run(
             "maven",