use config.bzl to pipe the list of available values

Author: aignas

python/private/pypi/config.bzl.tmpl.bzlmod

@@ -6,4 +6,4 @@ with your usecase. This may change in between rules_python versions without any
 @generated by rules_python pip.parse bzlmod extension.
 """
 
-target_platforms = %%TARGET_PLATFORMS%%
+whl_map = %%WHL_MAP%%

python/private/pypi/generate_whl_library_build_bazel.bzl

@@ -87,12 +87,12 @@ def generate_whl_library_build_bazel(
             """load("{}", "{}")""".format(
                 dep_template.format(
                     name = "",
-                    target = "requirements.bzl",
+                    target = "config.bzl",
                 ),
-                "all_whl_requirements_by_package",
+                "whl_map",
             ),
         )
-        kwargs["include"] = "sorted(all_whl_requirements_by_package)"
+        kwargs["include"] = "whl_map"
 
     for arg in unsupported_args:
         if kwargs.get(arg):

python/private/pypi/hub_repository.bzl

@@ -49,7 +49,7 @@ def _impl(rctx):
         "config.bzl",
         rctx.attr._config_template,
         substitutions = {
-            "%%TARGET_PLATFORMS%%": render.list(rctx.attr.target_platforms),
+            "%%WHL_MAP%%": render.dict(rctx.attr.whl_map, value_repr = lambda x: "None"),
         },
     )
     rctx.template("requirements.bzl", rctx.attr._requirements_bzl_template, substitutions = {

tests/pypi/generate_whl_library_build_bazel/generate_whl_library_build_bazel_tests.bzl

@@ -85,7 +85,7 @@ _tests.append(_test_all_legacy)
 
 def _test_all(env):
     want = """\
-load("@pypi//:requirements.bzl", "all_whl_requirements_by_package")
+load("@pypi//:config.bzl", "whl_map")
 load("@rules_python//python/private/pypi:whl_library_targets.bzl", "whl_library_targets_from_requires")
 
 package(default_visibility = ["//visibility:public"])
@@ -112,7 +112,7 @@ whl_library_targets_from_requires(
         "qux",
     ],
     group_name = "qux",
-    include = sorted(all_whl_requirements_by_package),
+    include = whl_map,
     name = "foo.whl",
     requires_dist = [
         "foo",
@@ -149,7 +149,7 @@ _tests.append(_test_all)
 
 def _test_all_with_loads(env):
     want = """\
-load("@pypi//:requirements.bzl", "all_whl_requirements_by_package")
+load("@pypi//:config.bzl", "whl_map")
 load("@rules_python//python/private/pypi:whl_library_targets.bzl", "whl_library_targets_from_requires")
 
 package(default_visibility = ["//visibility:public"])
@@ -176,7 +176,7 @@ whl_library_targets_from_requires(
         "qux",
     ],
     group_name = "qux",
-    include = sorted(all_whl_requirements_by_package),
+    include = whl_map,
     name = "foo.whl",
     requires_dist = [
         "foo",