fix: disable python extension on windows (#6879)

### Changes are visible to end-users: yes

- Searched for relevant documentation and updated as needed: yes
- Breaking change (forces users to change their own code or config): no
- Suggested release notes appear below: yes

Disable python extension on windows

### Test plan

- Covered by existing test cases

GitOrigin-RevId: 631b85f43769ea877ebd14d6b4df7be48077dd64

gazelle/python/BUILD.bazel

@@ -0,0 +1,25 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+# gazelle:ignore
+config_setting(
+    name = "windows",
+    constraint_values = ["@platforms//os:windows"],
+)
+
+go_library(
+    name = "python",
+    srcs = [
+        "unix.go",
+        "windows.go",
+    ],
+    importpath = "aspect.build/cli/gazelle/python",
+    visibility = ["//visibility:public"],
+    deps = [
+        "@bazel_gazelle//language:go_default_library",
+    ] + select({
+        ":windows": [],
+        "//conditions:default": [
+            "@com_github_bazelbuild_rules_python_gazelle//python",
+        ],
+    }),
+)

gazelle/python/unix.go

@@ -0,0 +1,13 @@
+//go:build linux || darwin
+// +build linux darwin
+
+package python
+
+import (
+	"github.com/bazelbuild/bazel-gazelle/language"
+	python "github.com/bazelbuild/rules_python/gazelle/python"
+)
+
+func NewLanguage() language.Language {
+	return python.NewLanguage()
+}

gazelle/python/windows.go

@@ -0,0 +1,15 @@
+//go:build windows
+// +build windows
+
+package python
+
+import (
+	"log"
+
+	"github.com/bazelbuild/bazel-gazelle/language"
+)
+
+func NewLanguage() language.Language {
+	log.Fatalln("Python extension is not supported on Windows.\nSee: https://github.com/aspect-build/aspect-cli/issues/747")
+	return nil
+}

pkg/aspect/configure/BUILD.bazel

@@ -18,6 +18,7 @@ go_library(
         "//gazelle/bzl",
         "//gazelle/js",
         "//gazelle/kotlin",
+        "//gazelle/python",
         "//pkg/aspect/configure/internal/wspace",
         "//pkg/aspecterrors",
         "//pkg/ioutils",
@@ -33,7 +34,6 @@ go_library(
         "@bazel_gazelle//rule:go_default_library",
         "@bazel_gazelle//walk:go_default_library",
         "@com_github_bazelbuild_buildtools//build:go_default_library",
-        "@com_github_bazelbuild_rules_python_gazelle//python",
         "@com_github_pmezard_go_difflib//difflib",
         "@com_github_spf13_cobra//:cobra",
         "@com_github_spf13_viper//:viper",

pkg/aspect/configure/configure.go

@@ -26,12 +26,12 @@ import (
 	bzl "aspect.build/cli/gazelle/bzl"
 	js "aspect.build/cli/gazelle/js"
 	kotlin "aspect.build/cli/gazelle/kotlin"
+	python "aspect.build/cli/gazelle/python"
 	"aspect.build/cli/pkg/aspecterrors"
 	"aspect.build/cli/pkg/ioutils"
 	"github.com/bazelbuild/bazel-gazelle/language"
 	golang "github.com/bazelbuild/bazel-gazelle/language/go"
 	"github.com/bazelbuild/bazel-gazelle/language/proto"
-	python "github.com/bazelbuild/rules_python/gazelle/python"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )