Adding some missing config files

Author: kumar-zlai

flink/BUILD.bazel

@@ -37,8 +37,6 @@ test_deps = _FLINK_TEST_DEPS + [
     # Libraries
     maven_scala_artifact("org.scala-lang.modules:scala-java8-compat"),
     maven_scala_artifact("org.scala-lang.modules:scala-collection-compat"),
-    #    maven_artifact("org.scala-lang:scala-library", "2.13.12"),
-    #    maven_artifact("org.scala-lang:scala-reflect", "2.13.12"),
     maven_artifact("org.slf4j:slf4j-api"),
     maven_artifact("org.apache.logging.log4j:log4j-api"),
     maven_artifact("org.apache.logging.log4j:log4j-core"),

scala_config.bzl

@@ -0,0 +1,12 @@
+DEFAULT_SCALA_VERSION = "2.12.18"
+
+def _scala_version_impl(repository_ctx):
+    scala_version = repository_ctx.os.environ.get("SCALA_VERSION", DEFAULT_SCALA_VERSION)
+    repository_ctx.file("BUILD", "")
+    repository_ctx.file("version.bzl",
+        content = "SCALA_VERSION = '%s'\n" % scala_version)
+
+scala_version = repository_rule(
+    implementation = _scala_version_impl,
+    environ = ["SCALA_VERSION"],
+)

tools/build_rules/prelude_bazel

@@ -7,8 +7,7 @@ load("//tools/build_rules:jvm_binary.bzl", "jvm_binary")
 load("@rules_java//java:defs.bzl", "java_library")
 load("@contrib_rules_jvm//docs:stardoc-input.bzl", "java_test_suite")
 load("@io_bazel_rules_scala//scala:scala.bzl", "scala_test", "scala_test_suite")
-load("//tools/build_rules:artifact.bzl", "maven_artifact", "maven_scala_artifact")
-load("//tools/build_rules:artifact.bzl", "spark_artifact")
+load("//tools/build_rules:artifact.bzl", "maven_artifact", "maven_scala_artifact", "spark_artifact")
 load("//tools/build_rules:scala_junit_test_suite.bzl", "scala_junit_suite")
 
 load("@io_bazel_rules_scala//scala:advanced_usage/scala.bzl", "make_scala_library")
@@ -32,9 +31,6 @@ _JVM_FLAGS_FOR_ACCESSING_BASE_JAVA_CLASSES = [
 ]
 
 _SCALA_DEPS = [
-    # "@io_bazel_rules_scala_scala_library_2_12_18//:io_bazel_rules_scala_scala_library_2_12_18",
-    # "@io_bazel_rules_scala_scala_library_2_13_12//:io_bazel_rules_scala_scala_library_2_13_12",
-    # other scala related deps...
     maven_artifact("org.scala-lang:scala-library", SCALA_VERSION),
 ]
 

tools/config/BUILD

@@ -0,0 +1,6 @@
+config_setting(
+    name = "scala_2_13",
+    values = {
+        "define": "SCALA_VERSION=2.13.12",
+    },
+)