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buildSrc/src/main/kotlin/cc/tweaked/gradle/ProcessHelpers.kt

@@ -4,33 +4,37 @@ import org.codehaus.groovy.runtime.ProcessGroovyMethods
 import org.gradle.api.GradleException
 import java.io.BufferedReader
 import java.io.File
-import java.io.IOException
 import java.io.InputStreamReader
 
 internal object ProcessHelpers {
     fun startProcess(vararg command: String): Process {
         // Something randomly passes in "GIT_DIR=" as an environment variable which clobbers everything else. Don't
         // inherit the environment array!
-        return Runtime.getRuntime().exec(command, arrayOfNulls(0))
+        return ProcessBuilder()
+            .command(*command)
+            .redirectError(ProcessBuilder.Redirect.INHERIT)
+            .also { it.environment().clear() }
+            .start()
     }
 
     fun captureOut(vararg command: String): String {
         val process = startProcess(*command)
+        process.outputStream.close()
+
         val result = ProcessGroovyMethods.getText(process)
-        if (process.waitFor() != 0) throw IOException("Command exited with a non-0 status")
+        process.waitForOrThrow("Failed to run command")
         return result
     }
 
     fun captureLines(vararg command: String): List<String> {
-        return captureLines(startProcess(*command))
-    }
+        val process = startProcess(*command)
+        process.outputStream.close()
 
-    fun captureLines(process: Process): List<String> {
         val out = BufferedReader(InputStreamReader(process.inputStream)).use { reader ->
             reader.lines().filter { it.isNotEmpty() }.toList()
         }
         ProcessGroovyMethods.closeStreams(process)
-        if (process.waitFor() != 0) throw IOException("Command exited with a non-0 status")
+        process.waitForOrThrow("Failed to run command")
         return out
     }