Remove CI tests for versioned releases of Bazel and dependencies.

Unfortunately, the team maintaining this repository does not have the resources to keep the versioned releases up to date. Going forward, the recommended approach for depending on this repository is to select a specific commit and to use the `git_repository` WORKSPACE rule available in `@bazel_tools//tools/build_defs/repo:git.bzl`.

RELNOTES: None
PiperOrigin-RevId: 274255348

Author: sergiocampama

.bazelci/presubmit.yml

@@ -25,44 +25,16 @@ x_defaults:
     test_targets: *linux_targets
 
 tasks:
-  macos_latest:
-    name: "Latest Bazel"
-    bazel: latest
-    <<: *mac_common
-
   macos_last_green:
     name: "Last Green Bazel"
     bazel: last_green
     <<: *mac_common
 
-  macos_latest_head_deps:
-    name: "Latest Bazel with Head Deps"
-    bazel: latest
-    shell_commands:
-    # Update the WORKSPACE to use head versions of some deps to ensure nothing
-    # has landed on them breaking this project.
-    - .bazelci/update_workspace_to_deps_heads.sh
-    <<: *mac_common
-
-  ubuntu1804_latest:
-    name: "Latest Bazel"
-    bazel: latest
-    <<: *linux_common
-
   ubuntu1804_last_green:
     name: "Last Green Bazel"
     bazel: last_green
     <<: *linux_common
 
-  ubuntu1804_latest_head_deps:
-    name: "Latest Bazel with Head Deps"
-    bazel: latest
-    shell_commands:
-    # Update the WORKSPACE to use head versions of some deps to ensure nothing
-    # has landed on them breaking this project.
-    - .bazelci/update_workspace_to_deps_heads.sh
-    <<: *linux_common
-
 buildifier:
   version: latest
   # Disable 'bzl-visibility' since it doesn't work properly.

.bazelci/update_workspace_to_deps_heads.sh

@@ -47,14 +47,23 @@ replacing the `urls` and `sha256` attributes with the values from the release
 you wish to depend on:
 
 ```python
+load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
-http_archive(
+# rules_swift and apple_support no longer support releases. If you'd like to pin
+# down these dependencies to a specific commit, please add the following to the
+# top of your WORKSPACE, using the commit you'd like to pin for each of the
+# repositories.
+git_repository(
     name = "build_bazel_rules_swift",
-    sha256 = "96a86afcbdab215f8363e65a10cf023b752e90b23abf02272c4fc668fcb70311",
-    urls = [
-        "https://github.com/bazelbuild/rules_swift/releases/download/0.11.1/rules_swift.0.11.1.tar.gz",
-    ],
+    remote = "https://github.com/bazelbuild/rules_swift.git",
+    commit = "[SOME_HASH_VALUE]",
+)
+
+git_repository(
+    name = "build_bazel_apple_support",
+    remote = "https://github.com/bazelbuild/apple_support.git",
+    commit = "[SOME_HASH_VALUE]",
 )
 
 load(

README.md

@@ -14,6 +14,7 @@
 
 """Definitions for handling Bazel repositories used by the Swift rules."""
 
+load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 load(
     "@build_bazel_rules_swift//swift/internal:swift_autoconfiguration.bzl",
@@ -48,12 +49,10 @@ def swift_rules_dependencies():
     )
 
     _maybe(
-        http_archive,
+        git_repository,
         name = "build_bazel_apple_support",
-        urls = [
-            "https://github.com/bazelbuild/apple_support/releases/download/0.7.2/apple_support.0.7.2.tar.gz",
-        ],
-        sha256 = "9114c452eee622598cf9cdc90ecb12b06af7f914f33440b26deba9a9704d450c",
+        remote = "https://github.com/bazelbuild/apple_support.git",
+        branch = "master",
     )
 
     _maybe(