无法从 Amazon EC2 中的私有 pypi 服务器获取包

Question

出于几个原因，我们决定在 Amazon S3 上托管所有私有和 public Python 依赖项（及其依赖项）。我们打算 download/install 仅从 S3 而不是其他地方的包。

我按照（我写了答案）中提到的步骤在 S3 上设置了 pypi 服务器。

要将 public 包上传到 S3，我会先使用
下载它们 pip download numpy==1.14.2
pip download statsmodels==0.6.1

要安装我会使用的任何包

pip install pandas --index-url=http://<s3_endpoint> --trusted-host=<s3_endpoint> --no-cache-dir

下载为 .whl 文件的软件包一切正常。这样的包（例如 pandas）能够安装它们自己和它们的依赖项（numpy 在 pandas 的情况下）没有任何问题。

问题出在非 whl 包上，例如 statsmodels-0.6.1.tar.gz。 pip 用于安装 statsmodels，安装依赖项，statsmodels 使用 easy_install.
pip arg --index-url 未被 easy_install 使用，它会从 pypi.org 下载依赖项 - numpy。

为了解决这个问题（仅从 S3 下载），我提取了 statsmodels-0.6.1.tar.gz，编辑了 setup.cfg，重新打包并上传到 S3。下面是setup.cfg的内容：

[egg_info]
tag_build =
tag_date = 0
tag_svn_revision = 0

# lines below are added by me
[easy_install]
index_url = http://<s3_link>
find_links = http://<s3_link>

通过该更改 statsmodels 从 S3 获取依赖项 numpy 并成功安装。

出于某些奇怪的原因，这仅适用于 Ubuntu（本地和 EC2 运行 Ubuntu）但在 EC2 运行 Amazon Linux 上失败.下面是我使用 pip 的 --log <file> 参数保存的日志。为了简洁起见，我删除了时间戳。

Created temporary directory: /tmp/pip-ephem-wheel-cache-7SD5Bu
Created temporary directory: /tmp/pip-req-tracker-du4AEi
Created requirements tracker '/tmp/pip-req-tracker-du4AEi'
Created temporary directory: /tmp/pip-install-G2qw36
Looking in indexes: http://<s3_link>
Collecting statsmodels
  1 location(s) to search for versions of statsmodels:
  * http://<s3_link>/statsmodels/
  Getting page http://<s3_link>/statsmodels/
  Found index url http://<s3_link>
  Analyzing links from page http://<s3_link>/statsmodels/
    Found link http://<s3_link>/statsmodels/statsmodels-0.6.1.tar.gz (from http://<s3_link>/statsmodels/), version: 0.6.1
  Given no hashes to check 1 links for project 'statsmodels': discarding no candidates
  Using version 0.6.1 (newest of versions: 0.6.1)
  Created temporary directory: /tmp/pip-unpack-r8lKU4
  Found index url http://<s3_link>
  Downloading http://<s3_link>/statsmodels/statsmodels-0.6.1.tar.gz (7.1MB)
  Downloading from URL http://<s3_link>/statsmodels/statsmodels-0.6.1.tar.gz (from http://<s3_link>/statsmodels/)
  Added statsmodels from http://<s3_link>/statsmodels/statsmodels-0.6.1.tar.gz to build tracker '/tmp/pip-req-tracker-du4AEi'
    Running setup.py (path:/tmp/pip-install-G2qw36/statsmodels/setup.py) egg_info for package statsmodels
    Running command python setup.py egg_info
    No local packages or download links found for numpy
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-G2qw36/statsmodels/setup.py", line 449, in <module>
        **setuptools_kwargs)
      File "/usr/lib64/python2.7/distutils/core.py", line 111, in setup
        _setup_distribution = dist = klass(attrs)
      File "/home/ec2-user/tempenv/local/lib/python2.7/site-packages/setuptools/dist.py", line 265, in __init__
        self.fetch_build_eggs(attrs['setup_requires'])
      File "/home/ec2-user/tempenv/local/lib/python2.7/site-packages/setuptools/dist.py", line 311, in fetch_build_eggs
        replace_conflicting=True,
      File "/home/ec2-user/tempenv/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 797, in resolve
        dist = best[req.key] = env.best_match(req, ws, installer)
      File "/home/ec2-user/tempenv/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 1047, in best_match
        return self.obtain(req, installer)
      File "/home/ec2-user/tempenv/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 1059, in obtain
        return installer(requirement)
      File "/home/ec2-user/tempenv/local/lib/python2.7/site-packages/setuptools/dist.py", line 378, in fetch_build_egg
        return cmd.easy_install(req)
      File "/home/ec2-user/tempenv/local/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 617, in easy_install
        raise DistutilsError(msg)
    distutils.errors.DistutilsError: Could not find suitable distribution for Requirement.parse('numpy')

cat /etc/os-release（亚马逊 Linux 详细信息）的输出：

NAME="Amazon Linux AMI"
VERSION="2017.03"
ID="amzn"
ID_LIKE="rhel fedora"
VERSION_ID="2017.03"
PRETTY_NAME="Amazon Linux AMI 2017.03"

Answer 1

显然，EC2 运行 Amazon Linux 使用的是 setuptools 的旧版本。
我升级到最新版本并且安装顺利。

无法从 Amazon EC2 中的私有 pypi 服务器获取包

Unable to fetch packages from private pypi server in Amazon EC2

python

pip

easy-install

pypi

amazon-linux