Remove @io_bazel_rules_scala or replace with Label

Changes `io_bazel_rules_scala` to `rules_scala` and
`io_bazel_rules_scala_toolchains` to `rules_scala_toolchains` throughout
the repo.

`WORKSPACE` users can still import `rules_scala` as
`io_bazel_rules_scala` via `http_archive`. Bzlmod users can call
`bazel_dep(name = "rules_scala", repo_name = "io_bazel_rules_scala")`.
However, it's no longer required by `rules_scala` itself.

The build succeeds because `@io_bazel_rules_scala` isn't used internally
any longer. (`@io_bazel_rules_scala_toolchains` was only introduced
during Bzlmodification, so it was less fragile to begin with.)

Leaves `@io_bazel_rules_scala_config` as is for now, because it's a
documented public interface. It can be easily changed and documented in
a future commit if desired.

Also doesn't change the `io_bazel_rules_scala_` prefix for Maven
artifact repos. This could also be done and documented in a future
commit if desired.

WORKSPACE

@@ -1,4 +1,4 @@
-workspace(name = "io_bazel_rules_scala")
+workspace(name = "rules_scala")
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 load("//scala:deps.bzl", "rules_scala_dependencies")
@@ -42,7 +42,7 @@ load("@rules_proto//proto:toolchains.bzl", "rules_proto_toolchains")
 
 rules_proto_toolchains()
 
-load("@io_bazel_rules_scala//:scala_config.bzl", "scala_config")
+load("@rules_scala//:scala_config.bzl", "scala_config")
 
 scala_config(enable_compiler_dependency_tracking = True)
 
@@ -60,7 +60,7 @@ scala_toolchains(
 register_toolchains(
     "//scala:unused_dependency_checker_error_toolchain",
     "//test/proto:scalapb_toolchain",
-    "@io_bazel_rules_scala_toolchains//...:all",
+    "@rules_scala_toolchains//...:all",
 )
 
 # needed for the cross repo proto test

dt_patches/compiler_sources/extensions.bzl

@@ -1,20 +1,20 @@
+load("@io_bazel_rules_scala_config//:config.bzl", "SCALA_VERSION")
 load(
-    "@io_bazel_rules_scala//scala:scala_cross_version.bzl",
+    "@rules_scala//scala:scala_cross_version.bzl",
     "default_maven_server_urls",
 )
 load(
-    "@io_bazel_rules_scala//scala:scala_maven_import_external.bzl",
+    "@rules_scala//scala:scala_maven_import_external.bzl",
     "scala_maven_import_external",
 )
 load(
-    "@io_bazel_rules_scala//third_party/repositories:scala_2_13.bzl",
+    "@rules_scala//third_party/repositories:scala_2_13.bzl",
     _scala_2_version = "scala_version",
 )
 load(
-    "@io_bazel_rules_scala//third_party/repositories:scala_3_5.bzl",
+    "@rules_scala//third_party/repositories:scala_3_5.bzl",
     _scala_3_version = "scala_version",
 )
-load("@io_bazel_rules_scala_config//:config.bzl", "SCALA_VERSION")
 
 _IS_SCALA_2 = SCALA_VERSION.startswith("2.")
 _IS_SCALA_3 = SCALA_VERSION.startswith("3.")

dt_patches/test_dt_patches/BUILD

@@ -1,8 +1,8 @@
+load("@rules_scala//scala:scala.bzl", "setup_scala_toolchain")
 load(
-    "@io_bazel_rules_scala//scala:scala.bzl",
-    "setup_scala_toolchain",
+    "@rules_scala//scala:scala_cross_version_select.bzl",
+    "select_for_scala_version",
 )
-load("@io_bazel_rules_scala//scala:scala_cross_version_select.bzl", "select_for_scala_version")
 
 SCALA_LIBS = ["@scala_library"] + select_for_scala_version(
     any_2 = ["@scala_reflect"],

dt_patches/test_dt_patches/WORKSPACE

@@ -3,11 +3,11 @@ workspace(name = "test_dt_patches")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 local_repository(
-    name = "io_bazel_rules_scala",
+    name = "rules_scala",
     path = "../..",
 )
 
-load("@io_bazel_rules_scala//scala:deps.bzl", "rules_scala_dependencies")
+load("@rules_scala//scala:deps.bzl", "rules_scala_dependencies")
 
 rules_scala_dependencies()
 
@@ -48,7 +48,7 @@ load("@rules_proto//proto:toolchains.bzl", "rules_proto_toolchains")
 
 rules_proto_toolchains()
 
-load("@io_bazel_rules_scala//:scala_config.bzl", "scala_config")
+load("@rules_scala//:scala_config.bzl", "scala_config")
 
 scala_config(enable_compiler_dependency_tracking = True)
 
@@ -61,7 +61,7 @@ load("@compiler_sources//:extensions.bzl", "import_compiler_source_repos")
 
 import_compiler_source_repos()
 
-load("@io_bazel_rules_scala//scala:toolchains.bzl", "scala_toolchains")
+load("@rules_scala//scala:toolchains.bzl", "scala_toolchains")
 
 scala_toolchains(
     fetch_sources = True,
@@ -70,5 +70,5 @@ scala_toolchains(
 
 register_toolchains(
     ":dt_scala_toolchain",
-    "@io_bazel_rules_scala_toolchains//...:all",
+    "@rules_scala_toolchains//...:all",
 )

dt_patches/test_dt_patches/dummy/BUILD

@@ -1,4 +1,4 @@
-load("@io_bazel_rules_scala//scala:scala.bzl", "scala_library")
+load("@rules_scala//scala:scala.bzl", "scala_library")
 
 scala_library(
     name = "dummy",

dt_patches/test_dt_patches_user_srcjar/BUILD

@@ -1,8 +1,11 @@
 load(
-    "@io_bazel_rules_scala//scala:scala.bzl",
+    "@rules_scala//scala:scala.bzl",
     "setup_scala_toolchain",
 )
-load("@io_bazel_rules_scala//scala:scala_cross_version_select.bzl", "select_for_scala_version")
+load(
+    "@rules_scala//scala:scala_cross_version_select.bzl",
+    "select_for_scala_version",
+)
 
 SCALA_LIBS = ["@scala_library"] + select_for_scala_version(
     any_2 = ["@scala_reflect"],

dt_patches/test_dt_patches_user_srcjar/WORKSPACE

@@ -3,11 +3,11 @@ workspace(name = "test_dt_patches")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 local_repository(
-    name = "io_bazel_rules_scala",
+    name = "rules_scala",
     path = "../..",
 )
 
-load("@io_bazel_rules_scala//scala:deps.bzl", "rules_scala_dependencies")
+load("@rules_scala//scala:deps.bzl", "rules_scala_dependencies")
 
 rules_scala_dependencies()
 
@@ -48,7 +48,7 @@ load("@rules_proto//proto:toolchains.bzl", "rules_proto_toolchains")
 
 rules_proto_toolchains()
 
-load("@io_bazel_rules_scala//:scala_config.bzl", "scala_config")
+load("@rules_scala//:scala_config.bzl", "scala_config")
 
 scala_config(enable_compiler_dependency_tracking = True)
 
@@ -137,7 +137,7 @@ srcjars_by_version = {
     },
 }
 
-load("@io_bazel_rules_scala//scala:toolchains.bzl", "scala_toolchains")
+load("@rules_scala//scala:toolchains.bzl", "scala_toolchains")
 
 scala_toolchains(
     fetch_sources = True,
@@ -147,5 +147,5 @@ scala_toolchains(
 
 register_toolchains(
     ":dt_scala_toolchain",
-    "@io_bazel_rules_scala_toolchains//...:all",
+    "@rules_scala_toolchains//...:all",
 )

dt_patches/test_dt_patches_user_srcjar/dummy/BUILD

@@ -1,4 +1,4 @@
-load("@io_bazel_rules_scala//scala:scala.bzl", "scala_library")
+load("@rules_scala//scala:scala.bzl", "scala_library")
 
 scala_library(
     name = "dummy",

examples/crossbuild/1_single/BUILD

@@ -1,4 +1,4 @@
-load("@io_bazel_rules_scala//scala:scala.bzl", "scala_binary", "scala_library", "scala_test")
+load("@rules_scala//scala:scala.bzl", "scala_binary", "scala_library", "scala_test")
 
 # Here we demonstrate the simplest case,
 # single binary, test or library for which we set a specific version or use the default one:

examples/crossbuild/2_deps/BUILD

@@ -1,4 +1,4 @@
-load("@io_bazel_rules_scala//scala:scala.bzl", "scala_binary", "scala_library")
+load("@rules_scala//scala:scala.bzl", "scala_binary", "scala_library")
 
 # Here we demonstrate how scala_version is propagated through deps.
 

examples/crossbuild/3_select/BUILD

@@ -1,5 +1,5 @@
-load("@io_bazel_rules_scala//scala:scala.bzl", "scala_binary", "scala_library")
-load("@io_bazel_rules_scala//scala:scala_cross_version_select.bzl", "select_for_scala_version")
+load("@rules_scala//scala:scala.bzl", "scala_binary", "scala_library")
+load("@rules_scala//scala:scala_cross_version_select.bzl", "select_for_scala_version")
 
 # Here we demonstrate how to provide distinct source files depending on the version requested
 

examples/crossbuild/WORKSPACE

@@ -3,11 +3,11 @@ workspace(name = "cross_build")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 local_repository(
-    name = "io_bazel_rules_scala",
+    name = "rules_scala",
     path = "../..",
 )
 
-load("@io_bazel_rules_scala//scala:deps.bzl", "rules_scala_dependencies")
+load("@rules_scala//scala:deps.bzl", "rules_scala_dependencies")
 
 rules_scala_dependencies()
 
@@ -48,7 +48,7 @@ load("@rules_proto//proto:toolchains.bzl", "rules_proto_toolchains")
 
 rules_proto_toolchains()
 
-load("@io_bazel_rules_scala//:scala_config.bzl", "scala_config")
+load("@rules_scala//:scala_config.bzl", "scala_config")
 
 scala_config(
     scala_version = "3.3.4",
@@ -59,8 +59,8 @@ scala_config(
     ],
 )
 
-load("@io_bazel_rules_scala//scala:toolchains.bzl", "scala_toolchains")
+load("@rules_scala//scala:toolchains.bzl", "scala_toolchains")
 
 scala_toolchains(scalatest = True)
 
-register_toolchains("@io_bazel_rules_scala_toolchains//...:all")
+register_toolchains("@rules_scala_toolchains//...:all")

examples/scala3/BUILD

@@ -1,4 +1,4 @@
-load("@io_bazel_rules_scala//scala:scala.bzl", "scala_binary", "scala_library")
+load("@rules_scala//scala:scala.bzl", "scala_binary", "scala_library")
 
 scala_library(
     name = "lib",

examples/scala3/WORKSPACE

@@ -3,11 +3,11 @@ workspace(name = "specs2_junit_repositories")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 local_repository(
-    name = "io_bazel_rules_scala",
+    name = "rules_scala",
     path = "../..",
 )
 
-load("@io_bazel_rules_scala//scala:deps.bzl", "rules_scala_dependencies")
+load("@rules_scala//scala:deps.bzl", "rules_scala_dependencies")
 
 rules_scala_dependencies()
 
@@ -48,12 +48,12 @@ load("@rules_proto//proto:toolchains.bzl", "rules_proto_toolchains")
 
 rules_proto_toolchains()
 
-load("@io_bazel_rules_scala//:scala_config.bzl", "scala_config")
+load("@rules_scala//:scala_config.bzl", "scala_config")
 
 scala_config(scala_version = "3.6.3")
 
-load("@io_bazel_rules_scala//scala:toolchains.bzl", "scala_toolchains")
+load("@rules_scala//scala:toolchains.bzl", "scala_toolchains")
 
 scala_toolchains(fetch_sources = True)
 
-register_toolchains("@io_bazel_rules_scala_toolchains//...:all")
+register_toolchains("@rules_scala_toolchains//...:all")

examples/semanticdb/BUILD

@@ -1,5 +1,5 @@
-load("@io_bazel_rules_scala//scala:scala_toolchain.bzl", "scala_toolchain")
-load("@io_bazel_rules_scala//scala:scala.bzl", "scala_binary", "scala_library")
+load("@rules_scala//scala:scala_toolchain.bzl", "scala_toolchain")
+load("@rules_scala//scala:scala.bzl", "scala_binary", "scala_library")
 
 scala_toolchain(
     name = "semanticdb_toolchain_impl",
@@ -11,7 +11,7 @@ scala_toolchain(
 toolchain(
     name = "semanticdb_toolchain",
     toolchain = "semanticdb_toolchain_impl",
-    toolchain_type = "@io_bazel_rules_scala//scala:toolchain_type",
+    toolchain_type = "@rules_scala//scala:toolchain_type",
     visibility = ["//visibility:public"],
 )
 

examples/semanticdb/WORKSPACE

@@ -3,11 +3,11 @@ workspace(name = "specs2_junit_repositories")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 local_repository(
-    name = "io_bazel_rules_scala",
+    name = "rules_scala",
     path = "../..",
 )
 
-load("@io_bazel_rules_scala//scala:deps.bzl", "rules_scala_dependencies")
+load("@rules_scala//scala:deps.bzl", "rules_scala_dependencies")
 
 rules_scala_dependencies()
 
@@ -48,16 +48,16 @@ load("@rules_proto//proto:toolchains.bzl", "rules_proto_toolchains")
 
 rules_proto_toolchains()
 
-load("@io_bazel_rules_scala//:scala_config.bzl", "scala_config")
+load("@rules_scala//:scala_config.bzl", "scala_config")
 
 scala_config(scala_version = "2.13.15")
 
-load("@io_bazel_rules_scala//scala:toolchains.bzl", "scala_toolchains")
+load("@rules_scala//scala:toolchains.bzl", "scala_toolchains")
 
 scala_toolchains(fetch_sources = True)
 
 register_toolchains(
     #Register and use the custom toolchain that has semanticdb enabled
     "//:semanticdb_toolchain",
-    "@io_bazel_rules_scala_toolchains//...:all",
+    "@rules_scala_toolchains//...:all",
 )

examples/semanticdb/aspect.bzl

@@ -1,7 +1,7 @@
 #This aspect is an example of exposing semanticdb information for each target into a json file.
 # An IDE could use a json file like this to consume the semanticdb data for each target.
 
-load("@io_bazel_rules_scala//scala:semanticdb_provider.bzl", "SemanticdbInfo")
+load("@rules_scala//scala:semanticdb_provider.bzl", "SemanticdbInfo")
 
 def semanticdb_info_aspect_impl(target, ctx):
     if SemanticdbInfo in target:
@@ -20,5 +20,5 @@ def semanticdb_info_aspect_impl(target, ctx):
 semanticdb_info_aspect = aspect(
     implementation = semanticdb_info_aspect_impl,
     attr_aspects = ["deps"],
-    toolchains = ["@io_bazel_rules_scala//scala:toolchain_type"],
+    toolchains = ["@rules_scala//scala:toolchain_type"],
 )

examples/testing/multi_frameworks_toolchain/BUILD

@@ -1,5 +1,5 @@
 load(
-    "@io_bazel_rules_scala//testing:testing.bzl",
+    "@rules_scala//testing:testing.bzl",
     "setup_scala_testing_toolchain",
 )
 

examples/testing/multi_frameworks_toolchain/WORKSPACE

@@ -3,11 +3,11 @@ workspace(name = "multi_frameworks_toolchain")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 local_repository(
-    name = "io_bazel_rules_scala",
+    name = "rules_scala",
     path = "../../..",
 )
 
-load("@io_bazel_rules_scala//scala:deps.bzl", "rules_scala_dependencies")
+load("@rules_scala//scala:deps.bzl", "rules_scala_dependencies")
 
 rules_scala_dependencies()
 
@@ -48,11 +48,11 @@ load("@rules_proto//proto:toolchains.bzl", "rules_proto_toolchains")
 
 rules_proto_toolchains()
 
-load("@io_bazel_rules_scala//:scala_config.bzl", "scala_config")
+load("@rules_scala//:scala_config.bzl", "scala_config")
 
 scala_config()
 
-load("@io_bazel_rules_scala//scala:toolchains.bzl", "scala_toolchains")
+load("@rules_scala//scala:toolchains.bzl", "scala_toolchains")
 
 scala_toolchains(
     fetch_sources = True,
@@ -61,5 +61,5 @@ scala_toolchains(
 
 register_toolchains(
     ":testing_toolchain",
-    "@io_bazel_rules_scala_toolchains//...:all",
+    "@rules_scala_toolchains//...:all",
 )

examples/testing/multi_frameworks_toolchain/example/BUILD

@@ -1,4 +1,4 @@
-load("@io_bazel_rules_scala//scala:scala.bzl", "scala_specs2_junit_test", "scala_test")
+load("@rules_scala//scala:scala.bzl", "scala_specs2_junit_test", "scala_test")
 
 scala_test(
     name = "scalatest_example",