pip show查询PyPI包时Home-page/Author字段缺失，如何修改pyproject.toml？

我首次将Python包jutility上传至PyPI，其pyproject.toml相关配置片段如下：

[build-system]
requires = ["setuptools>=61.0"]
build-backend = "setuptools.build_meta"

[project]
name = "jutility"
version = "0.0.4"
license = {text = "MIT License"}
authors = [
    {name = "Jake Levi", email = "jakelevi@hotmail.co.uk"},
]

# ...

[project.urls]
homepage = "https://github.com/jakelevi1996/jutility"

使用python3 -m pip install -U jutility安装后，执行python3 -m pip show jutility得到如下输出：

Name: jutility
Version: 0.0.4
Summary: Collection of Python utilities intended to be useful for machine learning research and experiments
Home-page: 
Author: 
Author-email: Jake Levi <jakelevi@hotmail.co.uk>
License: MIT License
Location: /usr/local/lib/python3.10/dist-packages
Requires: matplotlib, numpy, Pillow
Required-by: 

可见，尽管pyproject.toml中已定义相关内容，但pip show输出的Home-page和Author字段为空。在Windows 10（Python 3.7.6）构建上传，在Google Colab（Python 3.10.11）安装查询均出现相同问题，需如何修改pyproject.toml使这些字段正常显示？

解决方案 #

1. 修复Author字段为空问题 #

PEP 621规范里的authors是列表格式，会被映射到包元数据的Author-email字段，但pip show的Author字段对应元数据中的单个作者名字段，需要在[project]节点下单独添加author字段：

[project]
# 保留原有配置...
author = "Jake Levi"

若涉及多个作者，可用逗号分隔字符串，比如author = "Jake Levi, XXX"。

2. 修复Home-page字段为空问题 #

虽然[project.urls]中的homepage理论上会被setuptools转换为元数据的Home-Page字段，但部分环境可能存在映射兼容问题，可在[project]节点下补充url字段指向主页：

[project]
# 保留原有配置...
url = "https://github.com/jakelevi1996/jutility"

同时建议升级setuptools到最新稳定版，避免版本兼容性导致的映射失效。

修改后的[project]节点示例 #

[project]
name = "jutility"
version = "0.0.4"
license = {text = "MIT License"}
author = "Jake Levi"
authors = [
    {name = "Jake Levi", email = "jakelevi@hotmail.co.uk"},
]
url = "https://github.com/jakelevi1996/jutility"

# ... 其他配置内容

后续操作 #

修改完成后，用python -m build重新构建包，再通过twine upload dist/*上传到PyPI，重新安装包后执行pip show jutility即可看到字段正常显示。

内容的提问来源于stack exchange，提问作者Jake Levi