Fix CI setups

Author: Mr3zee

gradle-conventions/src/main/kotlin/util/other/localProperties.kt

@@ -10,6 +10,7 @@ import org.gradle.kotlin.dsl.provideDelegate
 import java.util.Properties
 import java.util.concurrent.atomic.AtomicReference
 import kotlin.io.path.Path
+import kotlin.io.path.exists
 import kotlin.io.path.inputStream
 
 private val ref = AtomicReference<Properties>()
@@ -19,7 +20,13 @@ fun Project.localProperties(): Properties {
         ref.compareAndSet(null, Properties().apply {
             val globalRootDir: String by extra
 
-            load(Path(globalRootDir, "local.properties").inputStream())
+            val filepath = Path(globalRootDir, "local.properties")
+
+            if (!filepath.exists()) {
+                return@apply
+            }
+
+            load(filepath.inputStream())
         })
     }
 

tests/protobuf-conformance/build.gradle.kts

@@ -112,7 +112,6 @@ tasks.register<JavaExec>("runConformanceTest") {
     mainClass.set("kotlinx.rpc.protoc.gen.test.RunConformanceTestKt")
 
     val protoscope = localProperties().getProperty("protoscope_path")
-        ?: throw GradleException("protoscope_path property is not set. Run ./setup_protoscope.sh")
 
     environment("PROTOSCOPE_PATH", protoscope)
 
@@ -130,15 +129,8 @@ tasks.register<JavaExec>("runConformanceTest") {
     )
 
     doFirst {
-        if (!File(protoscope).exists()) {
-            throw GradleException(
-                """
-                    Protoscope is not found. Use the following command to install it: 
-                    
-                    $ brew install go
-                    $ go install github.com/protocolbuffers/protoscope/cmd/protoscope...@latest
-                """.trimIndent()
-            )
+        if (protoscope == null || !File(protoscope).exists()) {
+            throw GradleException("protoscope_path property is not set. Run ./setup_protoscope.sh")
         }
     }
 }