Fix tests?

Author: dzbarsky

.bazelci/presubmit.yml

@@ -14,7 +14,7 @@ matrix:
 tasks:
   debian11_bazel6:
     platform: debian11
-    bazel: 6.5.0 # test minimum supported version of bazel
+    bazel: 7.1.0 # test minimum supported version of bazel that works with our bzlmod setup
     build_targets:
       - "//..."
       - "-//tests/core/go_binary:goos_pure_bin"

MODULE.bazel

@@ -59,7 +59,9 @@ use_repo(
 
 bazel_dep(name = "stardoc", version = "0.8.0", dev_dependency = True)
 
-go_sdk.download(
+dev_go_sdk = use_extension("//go:extensions.bzl", "go_sdk", dev_dependency = True)
+
+dev_go_sdk.download(
     name = "rules_go_internal_compatibility_sdk",
     version = "1.22.12",
 )

go/private/extensions.bzl

@@ -275,6 +275,8 @@ def _go_sdk_impl(ctx):
         # over extra SDKs specified with `download`. That way the `from_file` toolchains are registered
         # with higher precedence and become default, while `download`'ed toolchains can still be
         # requested explicitly.
+        # TODO(zbarsky/fmeum): This is still not the ideal ordering. We should respect the order that tags are
+        # specified in, but Bzlmod currently doesn't provide this information across tag classes.
         for index, download_tag in enumerate(additional_download_tags + module.tags.download):
             # SDKs without an explicit version are fetched even when not selected by toolchain
             # resolution. This is acceptable if brought in by the root module, but transitive

go/tools/gopackagesdriver/BUILD.bazel

@@ -41,7 +41,7 @@ go_bazel_test(
     srcs = ["gopackagesdriver_test.go"],
     embed = [":gopackagesdriver_lib"],
     env = {
-        "GOPACKAGESDRIVER_BAZEL_COMMON_FLAGS": "--noexperimental_enable_bzlmod",
+        "GOPACKAGESDRIVER_BAZEL_COMMON_FLAGS": "--experimental_enable_bzlmod",
     },
     rule_files = ["//:all_files"],
     x_defs = {