python: remove unused Java code

With the deletion of the Java rule implementation, large amounts of code are
now unused. Entire removal of the classes isn't yet possible, but most of
their code can be removed.

This also makes it easier to transition to the Starlark providers, since less
Java code is referencing the to-be-deleted Java providers

Work towards #15897

PiperOrigin-RevId: 514566571
Change-Id: I28ef124369fc678945873bc21919830cb73eafc8

src/main/java/com/google/devtools/build/lib/bazel/rules/python/BazelPyBinaryRule.java

@@ -14,13 +14,10 @@
 
 package com.google.devtools.build.lib.bazel.rules.python;
 
-import static com.google.devtools.build.lib.packages.Attribute.attr;
-import static com.google.devtools.build.lib.packages.BuildType.LABEL;
 
 import com.google.devtools.build.lib.analysis.BaseRuleClasses;
 import com.google.devtools.build.lib.analysis.RuleDefinition;
 import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment;
-import com.google.devtools.build.lib.analysis.config.ExecutionTransitionFactory;
 import com.google.devtools.build.lib.bazel.rules.python.BazelPyRuleClasses.PyBinaryBaseRule;
 import com.google.devtools.build.lib.packages.RuleClass;
 import com.google.devtools.build.lib.rules.python.PyRuleClasses;
@@ -41,15 +38,6 @@ public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env)
     return builder
         .requiresConfigurationFragments(PythonConfiguration.class, BazelPythonConfiguration.class)
         .cfg(PyRuleClasses.VERSION_TRANSITION)
-        .add(
-            attr("$zipper", LABEL)
-                .cfg(ExecutionTransitionFactory.create())
-                .exec()
-                .value(env.getToolsLabel("//tools/zip:zipper")))
-        .add(
-            attr("$launcher", LABEL)
-                .cfg(ExecutionTransitionFactory.create())
-                .value(env.getToolsLabel("//tools/launcher:launcher")))
         .build();
   }
 

src/main/java/com/google/devtools/build/lib/bazel/rules/python/BazelPyRuleClasses.java

@@ -17,7 +17,6 @@
 import static com.google.devtools.build.lib.packages.Attribute.attr;
 import static com.google.devtools.build.lib.packages.BuildType.LABEL;
 import static com.google.devtools.build.lib.packages.BuildType.LABEL_LIST;
-import static com.google.devtools.build.lib.packages.BuildType.NODEP_LABEL;
 import static com.google.devtools.build.lib.packages.BuildType.TRISTATE;
 import static com.google.devtools.build.lib.packages.Type.STRING;
 import static com.google.devtools.build.lib.packages.Type.STRING_LIST;
@@ -36,7 +35,6 @@
 import com.google.devtools.build.lib.rules.python.PyCommon;
 import com.google.devtools.build.lib.rules.python.PyInfo;
 import com.google.devtools.build.lib.rules.python.PyRuleClasses;
-import com.google.devtools.build.lib.rules.python.PyRuntimeInfo;
 import com.google.devtools.build.lib.rules.python.PythonVersion;
 
 /**
@@ -215,18 +213,6 @@ responsible for creating (possibly empty) __init__.py files and adding them to t
           <p>Stamped binaries are <em>not</em> rebuilt unless their dependencies change.</p>
           <!-- #END_BLAZE_RULE.ATTRIBUTE --> */
           .add(attr("stamp", TRISTATE).value(TriState.AUTO))
-          // TODO(brandjon): Consider adding to py_interpreter a .mandatoryBuiltinProviders() of
-          // PyRuntimeInfoProvider. (Add a test case to PythonConfigurationTest for violations of
-          // this requirement.) Probably moot now that this is going to be replaced by toolchains.
-          .add(attr(":py_interpreter", LABEL).value(PY_INTERPRETER))
-          .add(
-              attr("$py_toolchain_type", NODEP_LABEL)
-                  .value(env.getToolsLabel("//tools/python:toolchain_type")))
-          /* Only used when no py_runtime() is available. See #7901
-           */
-          .add(
-              attr("$default_bootstrap_template", LABEL)
-                  .value(env.getToolsLabel(PyRuntimeInfo.DEFAULT_BOOTSTRAP_TEMPLATE)))
           .addToolchainTypes(
               ToolchainTypeRequirement.builder(env.getToolsLabel("//tools/python:toolchain_type"))
                   .mandatory(true)

src/main/java/com/google/devtools/build/lib/bazel/rules/python/BazelPyTestRule.java

@@ -15,14 +15,12 @@
 package com.google.devtools.build.lib.bazel.rules.python;
 
 import static com.google.devtools.build.lib.packages.Attribute.attr;
-import static com.google.devtools.build.lib.packages.BuildType.LABEL;
 import static com.google.devtools.build.lib.packages.BuildType.TRISTATE;
 import static com.google.devtools.build.lib.packages.Type.BOOLEAN;
 
 import com.google.devtools.build.lib.analysis.BaseRuleClasses;
 import com.google.devtools.build.lib.analysis.RuleDefinition;
 import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment;
-import com.google.devtools.build.lib.analysis.config.ExecutionTransitionFactory;
 import com.google.devtools.build.lib.bazel.rules.python.BazelPyRuleClasses.PyBinaryBaseRule;
 import com.google.devtools.build.lib.packages.RuleClass;
 import com.google.devtools.build.lib.packages.RuleClass.Builder.RuleClassType;
@@ -39,11 +37,6 @@ public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env)
     return builder
         .requiresConfigurationFragments(PythonConfiguration.class, BazelPythonConfiguration.class)
         .cfg(PyRuleClasses.VERSION_TRANSITION)
-        .add(
-            attr("$zipper", LABEL)
-                .cfg(ExecutionTransitionFactory.create())
-                .exec()
-                .value(env.getToolsLabel("//tools/zip:zipper")))
         .override(
             attr("testonly", BOOLEAN)
                 .value(true)
@@ -53,21 +46,6 @@ public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env)
         that the stamp argument is set to 0 by default for tests.
         <!-- #END_BLAZE_RULE.ATTRIBUTE --> */
         .override(attr("stamp", TRISTATE).value(TriState.NO))
-        .add(
-            attr("$launcher", LABEL)
-                .cfg(ExecutionTransitionFactory.create())
-                .value(env.getToolsLabel("//tools/launcher:launcher")))
-        .add(
-            attr(":lcov_merger", LABEL)
-                .cfg(ExecutionTransitionFactory.create())
-                .value(BaseRuleClasses.getCoverageOutputGeneratorLabel()))
-        // Add the script as an attribute in order for py_test to output code coverage results for
-        // code covered by CC binaries invocations.
-        .add(
-            attr("$collect_cc_coverage", LABEL)
-                .cfg(ExecutionTransitionFactory.create())
-                .singleArtifact()
-                .value(env.getToolsLabel("//tools/test:collect_cc_coverage")))
         .build();
   }