Handle modulepath: imports

Author: thomasquinn

src/main/kotlin/org/pkl/lsp/ast/PklModuleUri.kt

@@ -16,6 +16,7 @@
 package org.pkl.lsp.ast
 
 import io.github.treesitter.jtreesitter.Node
+import java.nio.file.Files
 import java.nio.file.Path
 import org.pkl.lsp.*
 import org.pkl.lsp.FsFile
@@ -125,6 +126,15 @@ class PklModuleUriImpl(project: Project, override val parent: PklNode, override
               ?.resolve(targetUri.fragment)
           vfile?.getModule()?.get()
         }
+        "modulepath" -> {
+          context
+            ?.metadata
+            ?.evaluatorSettings
+            ?.modulePath
+            ?.map { context?.projectDir?.resolve(it, targetUri.path.trimStart('/')) }
+            ?.firstOrNull(Files::exists)
+            ?.let { path -> sourceFile.project.virtualFileManager.get(path)?.getModule()?.get() }
+        }
         // targetUri is a relative URI
         null -> {
           when {

src/main/kotlin/org/pkl/lsp/packages/dto/PklProject.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright © 2024 Apple Inc. and the Pkl project authors. All rights reserved.
+ * Copyright © 2024-2025 Apple Inc. and the Pkl project authors. All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -49,7 +49,8 @@ data class PklProject(val metadata: DerivedProjectMetadata, val projectDeps: Pro
       val evaluatorSettings: EvaluatorSettings?,
     )
 
-    @Serializable data class EvaluatorSettings(val moduleCacheDir: String? = null)
+    @Serializable
+    data class EvaluatorSettings(val moduleCacheDir: String? = null, val modulePath: List<String>)
 
     @Serializable
     data class ProjectDeps(