debugging swiftpm plugin + subprocess hangs

Author: ktoso

Package.swift

@@ -187,11 +187,11 @@ let package = Package(
         .swiftLanguageMode(.v5),
         .unsafeFlags(["-I\(javaIncludePath)", "-I\(javaPlatformIncludePath)"]),
       ]
-//      // FIXME: when the tool is run from plugin it hangs even if sandbox is disabled
-//      ,
-//      plugins: [
-//        "SwiftJavaBootstrapJavaPlugin",
-//      ]
+      // FIXME: when the tool is run from plugin it hangs even if sandbox is disabled
+      ,
+      plugins: [
+        "SwiftJavaBootstrapJavaPlugin",
+      ]
     ),
 
     .target(

Samples/JavaDependencySampleApp/ci-validate.sh

@@ -3,10 +3,4 @@
 set -e
 set -x
 
-# TODO: this is a workaround for build plugins getting stuck running the bootstrap plugin
-cd ../../
-swift build --product SwiftJavaBootstrapJavaTool
-.build/debug/SwiftJavaBootstrapJavaTool --fetch Sources/JavaKitDependencyResolver/swift-java.config --module-name JavaKitDependencyResolver --output-directory .build/plugins/outputs/swift-java/JavaKitDependencyResolver/destination/SwiftJavaBootstrapJavaPlugin
-
-cd -
 swift run --disable-sandbox

Sources/SwiftJavaBootstrapJavaTool/SwiftJavaBootstrapJavaTool.swift

@@ -67,8 +67,11 @@ final class SwiftJavaBootstrapJavaTool {
         "--rerun-tasks",
   //      "--debug",
   //      "\(localGradleProjectDependencyName):jar",
-        "\(localGradleProjectDependencyName):\(printRuntimeClasspathTaskName)"
+        "\(localGradleProjectDependencyName):\(printRuntimeClasspathTaskName)",
       ]
+//      ,
+//      output: .writeTo(.open("/tmp/out.txt", .writeOnly), closeAfterSpawningProcess: true),
+//      error: .writeTo(.open("/tmp/err.txt", .writeOnly), closeAfterSpawningProcess: true)
     )
 
     let outString = String(
@@ -106,6 +109,7 @@ final class SwiftJavaBootstrapJavaTool {
       URL(fileURLWithPath: outputDirectoryPath)
         .appendingPathComponent("\(moduleName).swift-java.classpath", isDirectory: false)
 
+    // let classpathString = "MOCK"
     try! classpathString.write(to: classpathOutputURL, atomically: true, encoding: .utf8)
 
     print("[swift-java-bootstrap] Done, written classpath to: \(classpathOutputURL)")