Problem guessing build folder when deploying to Heroku about mpapt HOT 4 CLOSED

In my plugin I've just replaced guessingBuildFolder() call with this code:

val projectFolder = cl.canonicalFilePath()?.split("/src")?.get(0) ?: ""
val buildFolder = "$projectFolder/build"

Instead of searching for the module name it just takes everything before the "src" folder in the path. It works fine for me. You could consider this as a fallback in the guessingBuildFolder() method.

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The code above turned out to be too simple. It fails when the project dir is located on path containing /src. So I came up with a more sophisticated solution:

                    tailrec fun findBuildFolder(path: String): String {
                        val preSrcDir = path.substringBeforeLast("/src")
                        return if (path == preSrcDir || File(preSrcDir, "build").isDirectory) {
                            "$preSrcDir/build"
                        } else {
                            findBuildFolder(preSrcDir)
                        }
                    }
                    val buildFolder = cl.canonicalFilePath()?.let { path -> findBuildFolder(path) }

Feel free to use it in your project.

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Hi @rjaros , thank you for reporting this, but unfortunately i don't know if there is a way to always get the correct build folder from inside a compiler plugin. I think, the best way is it, to get it from an gradle plugin and then pass the path to the compiler plugin to a https://github.com/JetBrains/kotlin/blob/master/compiler/plugin-api/src/org/jetbrains/kotlin/compiler/plugin/CommandLineProcessor.kt

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This sounds great, i will use your code inside the method

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