【发布时间】：2021-04-15 21:45:15
【问题描述】：
在不知不觉中，我已经使用密码学包好几个月没有问题了，但突然它无法构建，它使我的项目的开发停止。
事实证明，密码学是我的 Pipfile 中其他软件包之一的依赖项：apns2。正如我所说，它一直运行良好，但我的环境肯定发生了一些变化。这是我的 Pipfile，只是那个包被隔离了：
[[source]]
url = "https://pypi.python.org/simple"
verify_ssl = true
name = "pypi"
[requires]
python_version = "3.7.9"
[packages]
apns2 = "*"
[dev-packages]
这失败了。我使用pipenv（最新版本2020.11.15），所以当我现在运行它时，输出如下：
# pipenv install
Creating a virtualenv for this project...
Pipfile: /Users/dylan/Dev/RideHare/server/Pipfile
Using /Users/dylan/.pyenv/versions/3.7.9/bin/python3.7m (3.7.9) to create virtualenv...
⠏ Creating virtual environment...created virtual environment CPython3.7.9.final.0-64 in 502ms
creator CPython3Posix(dest=/Users/dylan/.local/share/virtualenvs/server-2uc2X-TS, clear=False, global=False)
seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/Users/dylan/Library/Application Support/virtualenv)
added seed packages: pip==20.2.2, setuptools==51.0.0, wheel==0.35.1
activators BashActivator,CShellActivator,FishActivator,PowerShellActivator,PythonActivator,XonshActivator
✔ Successfully created virtual environment!
Virtualenv location: /Users/dylan/.local/share/virtualenvs/server-2uc2X-TS
Installing dependencies from Pipfile.lock (aa4cd9)...
An error occurred while installing cryptography==3.3.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5' --hash=sha256:84ef7a0c10c24a7773163f917f1cb6b4444597efd505a8aed0a22e8c4780f27e --hash=sha256:788a3c9942df5e4371c199d10383f44a105d67d401fb4304178020142f020244 --hash=sha256:9f6b0492d111b43de5f70052e24c1f0951cb9e6022188ebcb1cc3a3d301469b0 --hash=sha256:a69bd3c68b98298f490e84519b954335154917eaab52cf582fa2c5c7efc6e812 --hash=sha256:b4890d5fb9b7a23e3bf8abf5a8a7da8e228f1e97dc96b30b95685df840b6914a --hash=sha256:0003a52a123602e1acee177dc90dd201f9bb1e73f24a070db7d36c588e8f5c7d --hash=sha256:7e177e4bea2de937a584b13645cab32f25e3d96fc0bc4a4cf99c27dc77682be6 --hash=sha256:dc42f645f8f3a489c3dd416730a514e7a91a59510ddaadc09d04224c098d3302 --hash=sha256:69e836c9e5ff4373ce6d3ab311c1a2eed274793083858d3cd4c7d12ce20d5f9c --hash=sha256:9e21301f7a1e7c03dbea73e8602905a4ebba641547a462b26dd03451e5769e7c --hash=sha256:0e85aaae861d0485eb5a79d33226dd6248d2a9f133b81532c8f5aae37de10ff7 --hash=sha256:c366df0401d1ec4e548bebe8f91d55ebcc0ec3137900d214dd7aac8427ef3030 --hash=sha256:594a1db4511bc4d960571536abe21b4e5c3003e8750ab8365fafce71c5d86901 --hash=sha256:83d9d2dfec70364a74f4e7c70ad04d3ca2e6a08b703606993407bf46b97868c5! Will try again.
???? ▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉ 10/10 — 00:00:08
Installing initially failed dependencies...
[InstallError]: File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/cli/command.py", line 233, in install
[InstallError]: retcode = do_install(
[InstallError]: File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/core.py", line 2052, in do_install
[InstallError]: do_init(
[InstallError]: File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/core.py", line 1304, in do_init
[InstallError]: do_install_dependencies(
[InstallError]: File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/core.py", line 899, in do_install_dependencies
[InstallError]: batch_install(
[InstallError]: File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/core.py", line 796, in batch_install
[InstallError]: _cleanup_procs(procs, failed_deps_queue, retry=retry)
[InstallError]: File "/usr/local/Cellar/pipenv/2020.11.15/libexec/lib/python3.9/site-packages/pipenv/core.py", line 703, in _cleanup_procs
[InstallError]: raise exceptions.InstallError(c.dep.name, extra=err_lines)
[pipenv.exceptions.InstallError]: Looking in indexes: https://pypi.python.org/simple
[pipenv.exceptions.InstallError]: Collecting cryptography==3.3.1
[pipenv.exceptions.InstallError]: Using cached cryptography-3.3.1.tar.gz (539 kB)
[pipenv.exceptions.InstallError]: ERROR: Disabling PEP 517 processing is invalid: project specifies a build backend of setuptools.build_meta in pyproject.toml
ERROR: Couldn't install package: cryptography
Package installation failed...
☤ ▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉ 0/1 — 00:00:01
如果我明确替换 Pipfile 中的 apns2 行而不是密码学 (crytography = "*")，它也会以同样的方式失败。
【问题讨论】：
-
python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'在某种程度上看起来像错误的 Python（应该是python_version not in ('3.0', '3.1', '3.2', '3.3', '3.4', '3.5')，除非保证python_version也包含版本的次要组件），但我在cryptography包的源代码。也许它被用作另一个包的依赖项？ -
也就是说，假设它被解释为 Python（我不是很喜欢 Python 打包）——但似乎每个人都在这样做，所以也许你可以在那里添加一个 print 语句？跨度>
-
你的 MacBook 有 M1 芯片吗？
-
不，它是基于 Intel 的。
标签： python python-3.x pip pipenv python-cryptography