Refactor python rules

The goal of this cl is to simplify the python rules,
mostly by removing the "decorator" pattern that they
currently use, and instead making separate module
types for libraries, binaries, and tests that inherit
from each other.

Bug: 259718110
Test: Verified ninja files are unchanged (they only change in the list of soong sources because I added/deleted files)
Change-Id: I1e836e2cc4782c7818f91db7df7895de3b8db7ca

python/library.go

@@ -18,9 +18,6 @@ package python
 
 import (
 	"android/soong/android"
-	"android/soong/bazel"
-
-	"github.com/google/blueprint/proptools"
 )
 
 func init() {
@@ -33,66 +30,9 @@ func registerPythonLibraryComponents(ctx android.RegistrationContext) {
 }
 
 func PythonLibraryHostFactory() android.Module {
-	module := newModule(android.HostSupported, android.MultilibFirst)
-
-	android.InitBazelModule(module)
-
-	return module.init()
-}
-
-type bazelPythonLibraryAttributes struct {
-	Srcs         bazel.LabelListAttribute
-	Deps         bazel.LabelListAttribute
-	Imports      bazel.StringListAttribute
-	Srcs_version *string
-}
-
-type bazelPythonProtoLibraryAttributes struct {
-	Deps bazel.LabelListAttribute
-}
-
-func pythonLibBp2Build(ctx android.TopDownMutatorContext, m *Module) {
-	// TODO(b/182306917): this doesn't fully handle all nested props versioned
-	// by the python version, which would have been handled by the version split
-	// mutator. This is sufficient for very simple python_library modules under
-	// Bionic.
-	py3Enabled := proptools.BoolDefault(m.properties.Version.Py3.Enabled, true)
-	py2Enabled := proptools.BoolDefault(m.properties.Version.Py2.Enabled, false)
-	var python_version *string
-	if py2Enabled && !py3Enabled {
-		python_version = &pyVersion2
-	} else if !py2Enabled && py3Enabled {
-		python_version = &pyVersion3
-	} else if !py2Enabled && !py3Enabled {
-		ctx.ModuleErrorf("bp2build converter doesn't understand having neither py2 nor py3 enabled")
-	} else {
-		// do nothing, since python_version defaults to PY2ANDPY3
-	}
-
-	baseAttrs := m.makeArchVariantBaseAttributes(ctx)
-
-	attrs := &bazelPythonLibraryAttributes{
-		Srcs:         baseAttrs.Srcs,
-		Deps:         baseAttrs.Deps,
-		Srcs_version: python_version,
-		Imports:      baseAttrs.Imports,
-	}
-
-	props := bazel.BazelTargetModuleProperties{
-		// Use the native py_library rule.
-		Rule_class: "py_library",
-	}
-
-	ctx.CreateBazelTargetModule(props, android.CommonAttributes{
-		Name: m.Name(),
-		Data: baseAttrs.Data,
-	}, attrs)
+	return newModule(android.HostSupported, android.MultilibFirst).init()
 }
 
 func PythonLibraryFactory() android.Module {
-	module := newModule(android.HostAndDeviceSupported, android.MultilibBoth)
-
-	android.InitBazelModule(module)
-
-	return module.init()
+	return newModule(android.HostAndDeviceSupported, android.MultilibBoth).init()
 }