fix: fix errors with bazel@head (bazelbuild#2332)

Fix various errors with upcoming Bazel versions

* Use rules_cc 0.0.13 for integration tests.
* Set `allow_empty=True` in local toolchains setup

Fixes bazelbuild#2310

python/private/local_runtime_repo_setup.bzl

@@ -61,18 +61,26 @@ def define_local_runtime_toolchain_impl(
     cc_library(
         name = "_python_headers",
         # NOTE: Keep in sync with watch_tree() called in local_runtime_repo
-        srcs = native.glob(["include/**/*.h"]),
+        srcs = native.glob(
+            ["include/**/*.h"],
+            # A Python install may not have C headers
+            allow_empty = True,
+        ),
         includes = ["include"],
     )
 
     cc_library(
         name = "_libpython",
         # Don't use a recursive glob because the lib/ directory usually contains
         # a subdirectory of the stdlib -- lots of unrelated files
-        srcs = native.glob([
-            "lib/*{}".format(lib_ext),  # Match libpython*.so
-            "lib/*{}*".format(lib_ext),  # Also match libpython*.so.1.0
-        ]),
+        srcs = native.glob(
+            [
+                "lib/*{}".format(lib_ext),  # Match libpython*.so
+                "lib/*{}*".format(lib_ext),  # Also match libpython*.so.1.0
+            ],
+            # A Python install may not have shared libraries.
+            allow_empty = True,
+        ),
         hdrs = [":_python_headers"],
     )
 

tests/integration/compile_pip_requirements/WORKSPACE

@@ -1,3 +1,19 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "protobuf",
+    sha256 = "da288bf1daa6c04d03a9051781caa52aceb9163586bff9aa6cfb12f69b9395aa",
+    strip_prefix = "protobuf-27.0",
+    url = "https://github.com/protocolbuffers/protobuf/releases/download/v27.0/protobuf-27.0.tar.gz",
+)
+
+http_archive(
+    name = "rules_cc",
+    sha256 = "d9bdd3ec66b6871456ec9c965809f43a0901e692d754885e89293807762d3d80",
+    strip_prefix = "rules_cc-0.0.13",
+    urls = ["https://github.com/bazelbuild/rules_cc/releases/download/0.0.13/rules_cc-0.0.13.tar.gz"],
+)
+
 local_repository(
     name = "rules_python",
     path = "../../..",

tests/integration/ignore_root_user_error/WORKSPACE

@@ -1,3 +1,19 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "protobuf",
+    sha256 = "da288bf1daa6c04d03a9051781caa52aceb9163586bff9aa6cfb12f69b9395aa",
+    strip_prefix = "protobuf-27.0",
+    url = "https://github.com/protocolbuffers/protobuf/releases/download/v27.0/protobuf-27.0.tar.gz",
+)
+
+http_archive(
+    name = "rules_cc",
+    sha256 = "d9bdd3ec66b6871456ec9c965809f43a0901e692d754885e89293807762d3d80",
+    strip_prefix = "rules_cc-0.0.13",
+    urls = ["https://github.com/bazelbuild/rules_cc/releases/download/0.0.13/rules_cc-0.0.13.tar.gz"],
+)
+
 local_repository(
     name = "rules_python",
     path = "../../..",
@@ -13,8 +29,6 @@ python_register_toolchains(
     python_version = "3.9",
 )
 
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
-
 http_archive(
     name = "bazel_skylib",
     sha256 = "c6966ec828da198c5d9adbaa94c05e3a1c7f21bd012a0b29ba8ddbccb2c93b0d",

tests/integration/pip_parse/WORKSPACE

@@ -1,3 +1,19 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "protobuf",
+    sha256 = "da288bf1daa6c04d03a9051781caa52aceb9163586bff9aa6cfb12f69b9395aa",
+    strip_prefix = "protobuf-27.0",
+    url = "https://github.com/protocolbuffers/protobuf/releases/download/v27.0/protobuf-27.0.tar.gz",
+)
+
+http_archive(
+    name = "rules_cc",
+    sha256 = "d9bdd3ec66b6871456ec9c965809f43a0901e692d754885e89293807762d3d80",
+    strip_prefix = "rules_cc-0.0.13",
+    urls = ["https://github.com/bazelbuild/rules_cc/releases/download/0.0.13/rules_cc-0.0.13.tar.gz"],
+)
+
 local_repository(
     name = "rules_python",
     path = "../../..",

tests/integration/py_cc_toolchain_registered/WORKSPACE

@@ -1,3 +1,19 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "protobuf",
+    sha256 = "da288bf1daa6c04d03a9051781caa52aceb9163586bff9aa6cfb12f69b9395aa",
+    strip_prefix = "protobuf-27.0",
+    url = "https://github.com/protocolbuffers/protobuf/releases/download/v27.0/protobuf-27.0.tar.gz",
+)
+
+http_archive(
+    name = "rules_cc",
+    sha256 = "d9bdd3ec66b6871456ec9c965809f43a0901e692d754885e89293807762d3d80",
+    strip_prefix = "rules_cc-0.0.13",
+    urls = ["https://github.com/bazelbuild/rules_cc/releases/download/0.0.13/rules_cc-0.0.13.tar.gz"],
+)
+
 local_repository(
     name = "rules_python",
     path = "../../..",