Copy private go_bin_for_host rule from rules_go to /bazel/ci

Signed-off-by: Daniel Weiße <[email protected]>

bazel/ci/BUILD.bazel

@@ -1,7 +1,7 @@
 load("@buildifier_prebuilt//:rules.bzl", "buildifier", "buildifier_test")
 load("@com_github_ash2k_bazel_tools//multirun:def.bzl", "multirun")
 load("@gazelle//:def.bzl", "gazelle")
-load("@io_bazel_rules_go//go/private/rules:go_bin_for_host.bzl", "go_bin_for_host")
+load("//bazel/ci:go_bin_for_host.bzl", "go_bin_for_host")
 load("//bazel/ci:proto_targets.bzl", "proto_targets")
 load("//bazel/sh:def.bzl", "noop_warn", "repo_command", "sh_template")
 

bazel/ci/go_bin_for_host.bzl

@@ -0,0 +1,26 @@
+# Go toolchain for the host platform
+# Inspired by https://github.com/bazel-contrib/rules_go/blob/6e4fdcfeb1a333b54ab39ae3413d4ded46d8958d/go/private/rules/go_bin_for_host.bzl
+load("@local_config_platform//:constraints.bzl", "HOST_CONSTRAINTS")
+
+GO_TOOLCHAIN = "@io_bazel_rules_go//go:toolchain"
+
+def _ensure_target_cfg(ctx):
+    if "-exec" in ctx.bin_dir.path or "/host/" in ctx.bin_dir.path:
+        fail("exec not found")
+
+def _go_bin_for_host_impl(ctx):
+    _ensure_target_cfg(ctx)
+    sdk = ctx.toolchains[GO_TOOLCHAIN].sdk
+    sdk_files = ctx.runfiles([sdk.go] + sdk.headers + sdk.libs + sdk.srcs + sdk.tools)
+    return [
+        DefaultInfo(
+            files = depset([sdk.go]),
+            runfiles = sdk_files,
+        ),
+    ]
+
+go_bin_for_host = rule(
+    implementation = _go_bin_for_host_impl,
+    toolchains = [GO_TOOLCHAIN],
+    exec_compatible_with = HOST_CONSTRAINTS,
+)