Fix crash for Xcode 15.3

Author: paraselene

src/macosMain/kotlin/co/touchlab/xcode/cli/PluginManager.kt

@@ -73,7 +73,7 @@ object PluginManager {
 
         Console.echo("Synchronizing plugin compatibility list.")
         val additionalPluginCompatibilityIds =
-            xcodeInstallations.map { PropertyList.Object.String(it.pluginCompatabilityId) }
+            xcodeInstallations.mapNotNull { it.pluginCompatabilityId?.let { PropertyList.Object.String(it) } }
         logger.v { "Xcode installation IDs to include: ${additionalPluginCompatibilityIds.joinToString { it.value }}" }
         val infoPlist = PropertyList.create(pluginTargetInfoFile)
         val rootDictionary = infoPlist.root.dictionary

src/macosMain/kotlin/co/touchlab/xcode/cli/XcodeHelper.kt

@@ -5,9 +5,11 @@ import co.touchlab.xcode.cli.XcodeHelper.Defaults.nonApplePlugins
 import co.touchlab.xcode.cli.util.BackupHelper
 import co.touchlab.xcode.cli.util.Console
 import co.touchlab.xcode.cli.util.File
+import co.touchlab.xcode.cli.util.fromString
 import co.touchlab.xcode.cli.util.Path
 import co.touchlab.xcode.cli.util.PropertyList
 import co.touchlab.xcode.cli.util.Shell
+import co.touchlab.xcode.cli.util.Version
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.Json
@@ -83,6 +85,14 @@ object XcodeHelper {
             checkNotNull(versionPlist.build?.trim()) { "Couldn't get build number of Xcode at $path." }
         }
 
+        if (Version.fromString(version) >= Version.fromString("15.3")) {
+            return XcodeInstallation(
+                version = version,
+                build = build,
+                path = path
+            )
+        }
+
         val xcodeInfoPath = path / "Contents" / "Info"
         val pluginCompatabilityIdResult = Shell.exec("/usr/bin/defaults", "read", xcodeInfoPath.value, "DVTPlugInCompatibilityUUID")
             .checkSuccessful {
@@ -154,7 +164,7 @@ object XcodeHelper {
         val version: String,
         val build: String,
         val path: Path,
-        val pluginCompatabilityId: String,
+        val pluginCompatabilityId: String? = null,
     ) {
         val name: String = "Xcode $version ($build)"
     }