refactor(examples): replace compile_pip_requirements with uv lock rule (#4312)

`compile_pip_requirements` relies on `pip-compile`, whereas the
`//python/uv:lock.bzl%lock` rule uses `uv` for faster and more modern
lockfile generation.

Replace `compile_pip_requirements` targets across the examples with
`//python/uv:lock.bzl%lock`. Where examples previously generated a
separate Windows lockfile via `requirements_windows`, define a second
`lock` target passing `--python-platform=windows`.

examples/build_file_generation/BUILD.bazel

diff --git a/examples/build_file_generation/BUILD.bazel b/examples/build_file_generation/BUILD.bazel
index bfff6f3..23e9073 100644
--- a/examples/build_file_generation/BUILD.bazel
+++ b/examples/build_file_generation/BUILD.bazel
@@ -4,18 +4,24 @@
 # ruleset. When the symbol is loaded you can use the rule.
 load("@bazel_gazelle//:def.bzl", "gazelle")
 load("@pip//:requirements.bzl", "all_whl_requirements")
-load("@rules_python//python:pip.bzl", "compile_pip_requirements")
 load("@rules_python//python:py_binary.bzl", "py_binary")
 load("@rules_python//python:py_library.bzl", "py_library")
 load("@rules_python//python:py_test.bzl", "py_test")
+load("@rules_python//python/uv:lock.bzl", "lock")
 load("@rules_python_gazelle_plugin//manifest:defs.bzl", "gazelle_python_manifest")
 load("@rules_python_gazelle_plugin//modules_mapping:def.bzl", "modules_mapping")
 
-compile_pip_requirements(
+lock(
     name = "requirements",
-    src = "pyproject.toml",
-    requirements_txt = "requirements_lock.txt",
-    requirements_windows = "requirements_windows.txt",
+    srcs = ["pyproject.toml"],
+    out = "requirements_lock.txt",
+)
+
+lock(
+    name = "requirements_windows",
+    srcs = ["pyproject.toml"],
+    out = "requirements_windows.txt",
+    args = ["--python-platform=windows"],
 )
 
 # This repository rule fetches the metadata for python packages we

examples/bzlmod/BUILD.bazel

diff --git a/examples/bzlmod/BUILD.bazel b/examples/bzlmod/BUILD.bazel
index 7877105..95d8a9e 100644
--- a/examples/bzlmod/BUILD.bazel
+++ b/examples/bzlmod/BUILD.bazel
@@ -8,23 +8,34 @@
 load("@bazel_skylib//rules:build_test.bzl", "build_test")
 load("@pip//:requirements.bzl", "all_data_requirements", "all_requirements", "all_whl_requirements", "requirement")
 load("@python_3_13//:defs.bzl", py_test_with_transition = "py_test")
-load("@python_versions//3.10:defs.bzl", compile_pip_requirements_3_10 = "compile_pip_requirements")
 load("@rules_python//python:py_binary.bzl", "py_binary")
 load("@rules_python//python:py_library.bzl", "py_library")
 load("@rules_python//python:py_test.bzl", "py_test")
+load("@rules_python//python/uv:lock.bzl", "lock")
 
 # This stanza calls a rule that generates targets for managing pip dependencies
-# with pip-compile for a particular python version.
-compile_pip_requirements_3_10(
+# with uv for a particular python version.
+lock(
     name = "requirements_3_10",
-    timeout = "moderate",
-    src = "pyproject.toml",
-    extra_args = [
+    srcs = ["pyproject.toml"],
+    out = "requirements_lock_3_10.txt",
+    args = [
         "--extra-index-url",
         "https://pypi.org/simple/",
     ],
-    requirements_txt = "requirements_lock_3_10.txt",
-    requirements_windows = "requirements_windows_3_10.txt",
+    python_version = "3.10",
+)
+
+lock(
+    name = "requirements_windows_3_10",
+    srcs = ["pyproject.toml"],
+    out = "requirements_windows_3_10.txt",
+    args = [
+        "--extra-index-url",
+        "https://pypi.org/simple/",
+        "--python-platform=windows",
+    ],
+    python_version = "3.10",
 )
 
 # The rules below are language specific rules defined in

examples/bzlmod/other_module/BUILD.bazel

diff --git a/examples/bzlmod/other_module/BUILD.bazel b/examples/bzlmod/other_module/BUILD.bazel
index 3998665..c8585f1 100644
--- a/examples/bzlmod/other_module/BUILD.bazel
+++ b/examples/bzlmod/other_module/BUILD.bazel
@@ -1,10 +1,10 @@
-load("@rules_python//python:pip.bzl", "compile_pip_requirements")
+load("@rules_python//python/uv:lock.bzl", "lock")
 
 # NOTE: To update the requirements, you need to uncomment the rules_python
 # override in the MODULE.bazel.
-compile_pip_requirements(
+lock(
     name = "requirements",
-    src = "pyproject.toml",
+    srcs = ["pyproject.toml"],
+    out = "requirements_lock_3_11.txt",
     python_version = "3.11",
-    requirements_txt = "requirements_lock_3_11.txt",
 )

examples/multi_python_versions/requirements/BUILD.bazel

diff --git a/examples/multi_python_versions/requirements/BUILD.bazel b/examples/multi_python_versions/requirements/BUILD.bazel
index bf3f129..836d41f 100644
--- a/examples/multi_python_versions/requirements/BUILD.bazel
+++ b/examples/multi_python_versions/requirements/BUILD.bazel
@@ -1,36 +1,36 @@
-load("@rules_python//python:pip.bzl", "compile_pip_requirements")
+load("@rules_python//python/uv:lock.bzl", "lock")
 
-compile_pip_requirements(
+lock(
     name = "requirements_3_10",
-    src = "pyproject.toml",
+    srcs = ["pyproject.toml"],
+    out = "requirements_lock_3_10.txt",
     python_version = "3.10",
-    requirements_txt = "requirements_lock_3_10.txt",
 )
 
-compile_pip_requirements(
+lock(
     name = "requirements_3_11",
-    src = "pyproject.toml",
+    srcs = ["pyproject.toml"],
+    out = "requirements_lock_3_11.txt",
     python_version = "3.11",
-    requirements_txt = "requirements_lock_3_11.txt",
 )
 
-compile_pip_requirements(
+lock(
     name = "requirements_3_12",
-    src = "pyproject.toml",
+    srcs = ["pyproject.toml"],
+    out = "requirements_lock_3_12.txt",
     python_version = "3.12",
-    requirements_txt = "requirements_lock_3_12.txt",
 )
 
-compile_pip_requirements(
+lock(
     name = "requirements_3_13",
-    src = "pyproject.toml",
+    srcs = ["pyproject.toml"],
+    out = "requirements_lock_3_13.txt",
     python_version = "3.13",
-    requirements_txt = "requirements_lock_3_13.txt",
 )
 
-compile_pip_requirements(
+lock(
     name = "requirements_3_14",
-    src = "pyproject.toml",
+    srcs = ["pyproject.toml"],
+    out = "requirements_lock_3_14.txt",
     python_version = "3.14",
-    requirements_txt = "requirements_lock_3_14.txt",
 )

examples/pip_parse/BUILD.bazel

diff --git a/examples/pip_parse/BUILD.bazel b/examples/pip_parse/BUILD.bazel
index 014fcf2..294aa5f 100644
--- a/examples/pip_parse/BUILD.bazel
+++ b/examples/pip_parse/BUILD.bazel
@@ -1,7 +1,7 @@
-load("@rules_python//python:pip.bzl", "compile_pip_requirements")
 load("@rules_python//python:py_binary.bzl", "py_binary")
 load("@rules_python//python:py_test.bzl", "py_test")
 load("@rules_python//python/entry_points:py_console_script_binary.bzl", "py_console_script_binary")
+load("@rules_python//python/uv:lock.bzl", "lock")
 
 # Toolchain setup, this is optional.
 # Demonstrate that we can use the same python interpreter for the toolchain and executing pip in pip install (see WORKSPACE).
@@ -51,15 +51,25 @@
 )
 
 # This rule adds a convenient way to update the requirements file.
-compile_pip_requirements(
+lock(
     name = "requirements",
-    src = "pyproject.toml",
+    srcs = ["pyproject.toml"],
+    out = "requirements_lock.txt",
     constraints = [
         "constraints_certifi.txt",
         "constraints_urllib3.txt",
     ],
-    requirements_txt = "requirements_lock.txt",
-    requirements_windows = "requirements_windows.txt",
+)
+
+lock(
+    name = "requirements_windows",
+    srcs = ["pyproject.toml"],
+    out = "requirements_windows.txt",
+    args = ["--python-platform=windows"],
+    constraints = [
+        "constraints_certifi.txt",
+        "constraints_urllib3.txt",
+    ],
 )
 
 # Test the use of all pip_parse utilities in a single py_test

examples/pip_parse_vendored/BUILD.bazel

diff --git a/examples/pip_parse_vendored/BUILD.bazel b/examples/pip_parse_vendored/BUILD.bazel
index 08a3bdb..b6e94b8 100644
--- a/examples/pip_parse_vendored/BUILD.bazel
+++ b/examples/pip_parse_vendored/BUILD.bazel
@@ -1,16 +1,17 @@
 load("@bazel_skylib//rules:build_test.bzl", "build_test")
 load("@bazel_skylib//rules:diff_test.bzl", "diff_test")
 load("@bazel_skylib//rules:write_file.bzl", "write_file")
-load("@rules_python//python:pip.bzl", "compile_pip_requirements")
 load("@rules_python//python:py_test.bzl", "py_test")
+load("@rules_python//python/uv:lock.bzl", "lock")
 load("@rules_shell//shell:sh_binary.bzl", "sh_binary")
 load("//:requirements.bzl", "all_data_requirements", "all_requirements", "all_whl_requirements", "requirement")
 
 # This rule adds a convenient way to update the requirements.txt
 # lockfile based on the pyproject.toml.
-compile_pip_requirements(
+lock(
     name = "requirements",
-    src = "pyproject.toml",
+    srcs = ["pyproject.toml"],
+    out = "requirements.txt",
 )
 
 # The requirements.bzl file is using the hub repo to access packages via the

examples/wheel/BUILD.bazel

diff --git a/examples/wheel/BUILD.bazel b/examples/wheel/BUILD.bazel
index cdc7953..e84e130 100644
--- a/examples/wheel/BUILD.bazel
+++ b/examples/wheel/BUILD.bazel
@@ -16,12 +16,12 @@
 load("@bazel_skylib//rules:write_file.bzl", "write_file")
 load("//examples/wheel/private:wheel_utils.bzl", "directory_writer", "make_variable_tags")
 load("//python:packaging.bzl", "py_package", "py_wheel")
-load("//python:pip.bzl", "compile_pip_requirements")
 load("//python:py_library.bzl", "py_library")
 load("//python:py_test.bzl", "py_test")
 load("//python:versions.bzl", "gen_python_config_settings")
 load("//python/entry_points:py_console_script_binary.bzl", "py_console_script_binary")
 load("//python/private:bzlmod_enabled.bzl", "BZLMOD_ENABLED")  # buildifier: disable=bzl-visibility
+load("//python/uv:lock.bzl", "lock")
 
 package(default_visibility = ["//visibility:public"])
 
@@ -473,10 +473,10 @@
 
 # Test wheel publishing
 
-compile_pip_requirements(
+lock(
     name = "requirements_server",
-    src = "pyproject.toml",
-    requirements_txt = "requirements_server.txt",
+    srcs = ["pyproject.toml"],
+    out = "requirements_server.txt",
 )
 
 py_test(

gazelle/examples/bzlmod_build_file_generation/BUILD.bazel

diff --git a/gazelle/examples/bzlmod_build_file_generation/BUILD.bazel b/gazelle/examples/bzlmod_build_file_generation/BUILD.bazel
index 081bd79..97f0f51 100644
--- a/gazelle/examples/bzlmod_build_file_generation/BUILD.bazel
+++ b/gazelle/examples/bzlmod_build_file_generation/BUILD.bazel
@@ -7,20 +7,26 @@
 # requirements.
 load("@bazel_gazelle//:def.bzl", "gazelle")
 load("@pip//:requirements.bzl", "all_whl_requirements")
-load("@rules_python//python:pip.bzl", "compile_pip_requirements")
 load("@rules_python//python:py_binary.bzl", "py_binary")
 load("@rules_python//python:py_library.bzl", "py_library")
 load("@rules_python//python:py_test.bzl", "py_test")
+load("@rules_python//python/uv:lock.bzl", "lock")
 load("@rules_python_gazelle_plugin//manifest:defs.bzl", "gazelle_python_manifest")
 load("@rules_python_gazelle_plugin//modules_mapping:def.bzl", "modules_mapping")
 
 # This stanza calls a rule that generates targets for managing pip dependencies
-# with pip-compile.
-compile_pip_requirements(
+# with uv.
+lock(
     name = "requirements",
-    src = "pyproject.toml",
-    requirements_txt = "requirements_lock.txt",
-    requirements_windows = "requirements_windows.txt",
+    srcs = ["pyproject.toml"],
+    out = "requirements_lock.txt",
+)
+
+lock(
+    name = "requirements_windows",
+    srcs = ["pyproject.toml"],
+    out = "requirements_windows.txt",
+    args = ["--python-platform=windows"],
 )
 
 # This repository rule fetches the metadata for python packages we