Check if Internal Erlang SDK home path exists for SDK for New Project

Fixes KronicDeth#3173

CHANGELOG.md

@@ -33,6 +33,8 @@
 * [#3263](https://github.com/KronicDeth/intellij-elixir/pull/3263) - [@KronicDeth](https://github.com/KronicDeth)
   * Exclude `.elixir_ls` directory when configuring new `Project`s.
     If the `.elixir_ls` directory is included the `.beam` it produces can interfere with normal `StubIndex`.
+* [#3271](https://github.com/KronicDeth/intellij-elixir/pull/3271) - [@KronicDeth](https://github.com/KronicDeth)
+  * Check if Internal Erlang SDK home path exists for SDK for New Project.
 
 ## v15.0.1
 

resources/META-INF/changelog.html

@@ -29,6 +29,7 @@ <h1>v15.0.2</h1>
                 <p>If the <code>.elixir_ls</code> directory is included the <code>.beam</code> it produces can interfere
                     with normal <code>StubIndex</code>.</p>
             </li>
+            <li>Check if Internal Erlang SDK home path exists for SDK for New Project.</li>
         </ul>
     </li>
 </ul>

src/org/elixir_lang/new_project_wizard/Step.kt

@@ -255,13 +255,20 @@ private fun validateAndGetSdkValidationMessage(
     return if (sdk == null) {
         JavaUiBundle.message("title.no.jdk.specified")
     } else {
-        if (Elixir.elixirSdkHasErlangSdk(sdk)) {
-            try {
-                sdkModel.apply(null, true)
+        val internalErlangSdk = Elixir.elixirSdkToErlangSdk(sdk)
 
-                null
-            } catch (e: ConfigurationException) {
-                e.message ?: e.title
+        if (internalErlangSdk != null) {
+            if (internalErlangSdk.homeDirectory != null) {
+                try {
+                    sdkModel.apply(null, true)
+
+                    null
+                } catch (e: ConfigurationException) {
+                    e.message ?: e.title
+                }
+            } else {
+                "Internal Erlang SDK (${internalErlangSdk.name} home directory (${internalErlangSdk.homePath}) " +
+                        "does not exists.  Did you uninstall it?"
             }
         } else {
             "Internal Erlang SDK is not in Elixir SDK.  Set it before picking this Elixir SDK."