fix(setup): remove metadata redundancy [backport #8567 to 2.6] (#8640)

Backport of #8567 to 2.6

We remove metadata redundancy in setup.py and move it as much as
possible into pyproject.toml. This is crucial for dependencies, since
their declaration in pyproject.toml overrides setup.py.

Addresses #8566, #8604.

## Checklist

- [x] Change(s) are motivated and described in the PR description
- [x] Testing strategy is described if automated tests are not included
in the PR
- [x] Risks are described (performance impact, potential for breakage,
maintainability)
- [x] Change is maintainable (easy to change, telemetry, documentation)
- [x] [Library release note
guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html)
are followed or label `changelog/no-changelog` is set
- [x] Documentation is included (in-code, generated user docs, [public
corp docs](https://github.com/DataDog/documentation/))
- [x] Backport labels are set (if
[applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting))
- [x] If this PR changes the public interface, I've notified
`@DataDog/apm-tees`.
- [x] If change touches code that signs or publishes builds or packages,
or handles credentials of any kind, I've requested a review from
`@DataDog/security-design-and-guidance`.

## Reviewer Checklist

- [x] Title is accurate
- [x] All changes are related to the pull request's stated goal
- [x] Description motivates each change
- [x] Avoids breaking
[API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces)
changes
- [x] Testing strategy adequately addresses listed risks
- [x] Change is maintainable (easy to change, telemetry, documentation)
- [x] Release note makes sense to a user of the library
- [x] Author has acknowledged and discussed the performance implications
of this PR as reported in the benchmarks PR comment
- [x] Backport labels are set in a manner that is consistent with the
[release branch maintenance
policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)

Co-authored-by: David Sanchez <[email protected]>
Co-authored-by: Federico Mon <[email protected]>
Co-authored-by: Munir Abdinur <[email protected]>

Author: 4 people

pyproject.toml

@@ -13,7 +13,10 @@ authors = [
     { name = "Datadog, Inc.", email = "[email protected]" },
 ]
 classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python",
+    "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
@@ -23,11 +26,12 @@ classifiers = [
 ]
 dependencies = [
     "attrs>=20",
-    "bytecode; python_version>='3.8'",
-    "bytecode~=0.13.0; python_version=='3.7'",
+    "bytecode>=0.15.0; python_version>='3.12'",
+    "bytecode>=0.14.0; python_version~='3.11.0'",
+    "bytecode>=0.13.0; python_version<'3.11'",
     "cattrs",
     "ddsketch>=2.0.1",
-    "envier",
+    "envier~=0.5",
     "importlib_metadata<=6.5.0; python_version<'3.8'",
     "opentelemetry-api>=1",
     "protobuf>=3",

releasenotes/notes/fix-metadata-redundancy-afc4dca3c5bb4a5a.yaml

@@ -0,0 +1,4 @@
+---
+fixes:
+  - |
+    Fix for the declaration of dependencies for the package.

setup.py

@@ -403,30 +403,6 @@ def __init__(
         self.permissive_build = permissive_build  # If True, build errors are ignored
 
 
-long_description = """
-# dd-trace-py
-
-`ddtrace` is Datadog's tracing library for Python.  It is used to trace requests
-as they flow across web servers, databases and microservices so that developers
-have great visibility into bottlenecks and troublesome requests.
-
-## Getting Started
-
-For a basic product overview, installation and quick start, check out our
-[setup documentation][setup docs].
-
-For more advanced usage and configuration, check out our [API
-documentation][api docs].
-
-For descriptions of terminology used in APM, take a look at the [official
-documentation][visualization docs].
-
-[setup docs]: https://docs.datadoghq.com/tracing/setup/python/
-[api docs]: https://ddtrace.readthedocs.io/
-[visualization docs]: https://docs.datadoghq.com/tracing/visualization/
-"""
-
-
 def get_exts_for(name):
     try:
         mod = load_module_from_project_file(
@@ -538,92 +514,23 @@ def get_ddup_ext():
     return ddup_ext
 
 
-bytecode = [
-    "bytecode~=0.13.0; python_version=='3.7'",
-    "bytecode; python_version>='3.8' and python_version<'3.11'",
-    "bytecode>=0.14.0; python_version>='3.11'",
-    "bytecode>=0.15.0; python_version>='3.12'",
-]
-
 setup(
     name="ddtrace",
-    description="Datadog APM client library",
-    url="https://github.com/DataDog/dd-trace-py",
-    package_urls={
-        "Changelog": "https://ddtrace.readthedocs.io/en/stable/release_notes.html",
-        "Documentation": "https://ddtrace.readthedocs.io/en/stable/",
-    },
-    project_urls={
-        "Bug Tracker": "https://github.com/DataDog/dd-trace-py/issues",
-        "Source Code": "https://github.com/DataDog/dd-trace-py/",
-        "Changelog": "https://ddtrace.readthedocs.io/en/stable/release_notes.html",
-        "Documentation": "https://ddtrace.readthedocs.io/en/stable/",
-    },
-    author="Datadog, Inc.",
-    author_email="[email protected]",
-    long_description=long_description,
-    long_description_content_type="text/markdown",
-    license="BSD",
     packages=find_packages(exclude=["tests*", "benchmarks*"]),
     package_data={
         "ddtrace": ["py.typed"],
         "ddtrace.appsec": ["rules.json"],
         "ddtrace.appsec._ddwaf": [os.path.join("libddwaf", "*", "lib", "libddwaf.*")],
         "ddtrace.appsec._iast._taint_tracking": ["CMakeLists.txt"],
     },
-    python_requires=">=3.7",
     zip_safe=False,
     # enum34 is an enum backport for earlier versions of python
     # funcsigs backport required for vendored debtcollector
-    install_requires=[
-        "ddsketch>=2.0.1",
-        "protobuf>=3",
-        "attrs>=20",
-        "cattrs",
-        "six>=1.12.0",
-        "typing_extensions",
-        "importlib_metadata<=6.5.0; python_version<'3.8'",
-        "xmltodict>=0.12",
-        "envier",
-        "opentelemetry-api>=1",
-        "setuptools; python_version>='3.12'",
-    ]
-    + bytecode,
-    extras_require={
-        # users can include opentracing by having:
-        # install_requires=['ddtrace[opentracing]', ...]
-        "opentracing": ["opentracing>=2.0.0"],
-    },
-    tests_require=["flake8"],
     cmdclass={
         "build_ext": CMakeBuild,
         "build_py": LibraryDownloader,
         "clean": CleanLibraries,
     },
-    entry_points={
-        "console_scripts": [
-            "ddtrace-run = ddtrace.commands.ddtrace_run:main",
-        ],
-        "pytest11": [
-            "ddtrace = ddtrace.contrib.pytest.plugin",
-            "ddtrace.pytest_bdd = ddtrace.contrib.pytest_bdd.plugin",
-        ],
-        "opentelemetry_context": [
-            "ddcontextvars_context = ddtrace.opentelemetry._context:DDRuntimeContext",
-        ],
-    },
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Programming Language :: Python :: Implementation :: CPython",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3.11",
-        "Programming Language :: Python :: 3.12",
-    ],
     setup_requires=["setuptools_scm[toml]>=4", "cython", "cmake>=3.24.2,<3.28"],
     ext_modules=ext_modules
     + cythonize(