chore: extra code removals before 1.0 (#2421)

Alternatives have existed for a long time and we just ensure that
we remove before the 1.0 release.

Summary:
- remove pip_install_dependencies
- remove DEFAULT_PYTHON_VERSION from interpreters.bzl

Work towards #1361

CHANGELOG.md

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4a73766..4c6a08d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -97,7 +97,10 @@
 
 {#v0-0-0-removed}
 ### Removed
-* Nothing removed.
+* (pypi): Remove `pypi_install_dependencies` macro that has been included in
+  {bzl:obj}`py_repositories` for a long time.
+* (bzlmod): Remove `DEFAULT_PYTHON_VERSION` from `interpreters.bzl` file. If
+  you need the version, please use it from the `versions.bzl` file instead.
 
 {#v0-40-0}
 ## [0.40.0] - 2024-11-17

examples/bzlmod/MODULE.bazel.lock

diff --git a/examples/bzlmod/MODULE.bazel.lock b/examples/bzlmod/MODULE.bazel.lock
index 59d04d8..9cad595 100644
--- a/examples/bzlmod/MODULE.bazel.lock
+++ b/examples/bzlmod/MODULE.bazel.lock
@@ -1562,7 +1562,7 @@
     },
     "@@rules_python~//python/extensions:pip.bzl%pip": {
       "general": {
-        "bzlTransitiveDigest": "pwyX8REqPzcGLCGxpBHKvPiXm+kZooA+w1EfP3jA0Dc=",
+        "bzlTransitiveDigest": "i5dWUNj1rZ4NKXmzLiGceV+1gAsDWtpJED1w1tdB7WY=",
         "usagesDigest": "VmrNvB/4EhzsYieLDka9584M+pYKPpjNLl3Wcb5rx/c=",
         "recordedFileInputs": {
           "@@//requirements_lock_3_10.txt": "5e7083982a7e60f34998579a0ae83b520d46ab8f2552cc51337217f024e6def5",
@@ -7035,7 +7035,7 @@
     },
     "@@rules_python~//python/private/pypi:pip.bzl%pip_internal": {
       "general": {
-        "bzlTransitiveDigest": "XbkLEmpZ7PqBehe0QCZ4xvdtEesh5rpQLTvZg/+zWyI=",
+        "bzlTransitiveDigest": "ltVKFX5LXgwSpZtjuyF02xZspYIWHEFmpxmzvnyMbQ8=",
         "usagesDigest": "/lZXl/ZgP+u5PE8WkeWTyYBsvX9XQWFn1antj5qrBzQ=",
         "recordedFileInputs": {
           "@@rules_python~//tools/publish/requirements_linux.txt": "8175b4c8df50ae2f22d1706961884beeb54e7da27bd2447018314a175981997d",

python/pip_install/BUILD.bazel

diff --git a/python/pip_install/BUILD.bazel b/python/pip_install/BUILD.bazel
index 683199f..09bc46e 100644
--- a/python/pip_install/BUILD.bazel
+++ b/python/pip_install/BUILD.bazel
@@ -35,14 +35,6 @@
     deps = ["//python/private/pypi:pip_compile_bzl"],
 )
 
-bzl_library(
-    name = "repositories_bzl",
-    srcs = ["repositories.bzl"],
-    deps = [
-        "//python/private/pypi:deps_bzl",
-    ],
-)
-
 filegroup(
     name = "distribution",
     srcs = glob(["**"]),

python/pip_install/repositories.bzl

diff --git a/python/pip_install/repositories.bzl b/python/pip_install/repositories.bzl
deleted file mode 100644
index 5231d1f..0000000
--- a/python/pip_install/repositories.bzl
+++ /dev/null
@@ -1,19 +0,0 @@
-# Copyright 2023 The Bazel Authors. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-""
-
-load("//python/private/pypi:deps.bzl", "pypi_deps")
-
-pip_install_dependencies = pypi_deps

python/private/pythons_hub.bzl

diff --git a/python/private/pythons_hub.bzl b/python/private/pythons_hub.bzl
index 8afee5a..ac928ff 100644
--- a/python/private/pythons_hub.bzl
+++ b/python/private/pythons_hub.bzl
@@ -86,7 +86,6 @@
 INTERPRETER_LABELS = {{
 {interpreter_labels}
 }}
-DEFAULT_PYTHON_VERSION = "{default_python_version}"
 """
 
 _line_for_hub_template = """\
@@ -125,8 +124,6 @@
     rctx.file(
         "interpreters.bzl",
         _interpreters_bzl_template.format(
-            # TODO @aignas 2024-09-28: before 1.0 remove the value from here
-            default_python_version = rctx.attr.default_python_version,
             interpreter_labels = interpreter_labels,
         ),
         executable = False,

tests/integration/pip_parse/WORKSPACE

diff --git a/tests/integration/pip_parse/WORKSPACE b/tests/integration/pip_parse/WORKSPACE
index db0cd0c..e31655d 100644
--- a/tests/integration/pip_parse/WORKSPACE
+++ b/tests/integration/pip_parse/WORKSPACE
@@ -7,15 +7,6 @@
 
 py_repositories()
 
-# This call is included in `py_repositories` and we are calling
-# `pip_install_dependencies` only to ensure that we are not breaking really old
-# code.
-#
-# TODO @aignas 2024-06-23: remove this before 1.0.0
-load("@rules_python//python/pip_install:repositories.bzl", "pip_install_dependencies")
-
-pip_install_dependencies()
-
 python_register_toolchains(
     name = "python39",
     python_version = "3.9",