Adding documentation

This commit adds some documentation to the various extensions.

Author: chrislovecnm

python/extensions/pip.bzl

@@ -73,8 +73,12 @@ def _pip_parse_ext_attrs():
     return attrs
 
 pip = module_extension(
+    doc = """\
+This extension is used to create a pip respository and create the various wheel libaries if
+provided in a requirements file.
+""",
     implementation = _pip_impl,
     tag_classes = {
         "parse": tag_class(attrs = _pip_parse_ext_attrs()),
     },
-) 
+)

python/extensions/private/internal_deps.bzl

@@ -17,8 +17,9 @@ def _internal_deps_impl(module_ctx):
     install_coverage_deps()
 
 internal_deps = module_extension(
+    doc = "This extension to register internal rules_python dependecies.",
     implementation = _internal_deps_impl,
     tag_classes = {
         "install": tag_class(attrs = dict()),
     },
-) 
+)

python/extensions/python.bzl

@@ -42,6 +42,7 @@ def _python_impl(module_ctx):
     )
 
 python = module_extension(
+    doc = "Bzlmod extension that is used to register a Python toolchain.",
     implementation = _python_impl,
     tag_classes = {
         "toolchain": tag_class(
@@ -60,4 +61,4 @@ python = module_extension(
             },
         ),
     },
-) 
+)