Finish wiring up transitioning lib targets to whls

Author: arrdem

uv/private/constraints/BUILD.bazel

@@ -1,4 +1,28 @@
 load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+load("@bazel_skylib//rules:common_settings.bzl", "string_flag")
+
+string_flag(
+    name = "lib_mode",
+    build_setting_default = "lib",
+    values = ["lib", "whl"],
+    visibility = ["//visibility:public"],
+)
+
+config_setting(
+    name = "libs_are_libs",
+    flag_values = {
+        ":lib_mode": "lib",
+    },
+    visibility = ["//visibility:public"],
+)
+
+config_setting(
+    name = "libs_are_whls",
+    flag_values = {
+        ":lib_mode": "whl",
+    },
+    visibility = ["//visibility:public"],
+)
 
 bzl_library(
     name = "defs",

uv/private/hub/repository.bzl

@@ -19,14 +19,23 @@ def _hub_impl(repository_ctx):
     repository_ctx.file("BUILD.bazel", """\
 load("@aspect_rules_py//py:defs.bzl", "py_library")
 
-py_library(
+alias(
     name = "all",
-    deps = select({lib_arms}),
+    actual = ":all_requirements",
     visibility = ["//visibility:public"],
 )
 alias(
     name = "all_requirements",
-    actual = ":all",
+    actual = select({{
+        "@aspect_rules_py//uv/private/constraints:libs_are_libs": ":all_lib",
+        "@aspect_rules_py//uv/private/constraints:libs_are_whls": ":all_whl_requirements",
+    }}),
+    visibility = ["//visibility:public"],
+)
+py_library(
+    name = "all_lib",
+    deps = select({lib_arms}),
+    visibility = ["//visibility:private"],
 )
 filegroup(
     name = "all_whl_requirements",

uv/private/venv_hub/repository.bzl

@@ -15,12 +15,15 @@ def _venv_hub_impl(repository_ctx):
             """
 alias(
    name = "lib",
-   actual = "//private/sccs:{scc}",
+   actual = ":{pkg}",
    visibility = ["//visibility:public"],
 )
 alias(
    name = "{pkg}",
-   actual = "//private/sccs:{scc}_lib",
+   actual = select({{
+       "@aspect_rules_py//uv/private/constraints:libs_are_libs": "//private/sccs:{scc}_lib",
+       "@aspect_rules_py//uv/private/constraints:libs_are_whls": "//private/sccs:{scc}_whl",
+   }}),
    visibility = ["//visibility:public"],
 )
 alias(