在Travis-CI上使用Conan和Python3
我有一个使用Travis-CI和Conan的C++项目。我在Travis-CI上的Linux构建在尝试下载libcurl时失败：
libcurl/7.61.1@bincrafters/stable: Building your package in /home/travis/.conan/data/libcurl/7.61.1/bincrafters/stable/build/b6dbf799dd7e6d1c740e159bea361666320a3db8
libcurl/7.61.1@bincrafters/stable: Configuring sources in /home/travis/.conan/data/libcurl/7.61.1/bincrafters/stable/source
/usr/local/lib/python2.7/dist-packages/urllib3/util/ssl_.py:150: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning
ERROR: Error downloading file https://curl.haxx.se/download/curl-7.61.1.tar.gz: 'HTTPSConnectionPool(host='curl.haxx.se', port=443): Max retries exceeded with url: /download/curl-7.61.1.tar.gz (Caused by SSLError(CertificateError("hostname 'curl.haxx.se' doesn't match 'c.sni.fastly.net'",),))'
Waiting 5 seconds to retry...
/usr/local/lib/python2.7/dist-packages/urllib3/util/ssl_.py:150: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning
libcurl/7.61.1@bincrafters/stable: WARN: Trying to remove corrupted source folder
libcurl/7.61.1@bincrafters/stable: WARN: This can take a while for big packages
ERROR: libcurl/7.61.1@bincrafters/stable: Error in source() method, line 131
tools.get("https://curl.haxx.se/download/curl-%s.tar.gz" % self.version)
ConanException: Error downloading file https://curl.haxx.se/download/curl-7.61.1.tar.gz: 'HTTPSConnectionPool(host='curl.haxx.se', port=443): Max retries exceeded with url: /download/curl-7.61.1.tar.gz (Caused by SSLError(CertificateError("hostname 'curl.haxx.se' doesn't match 'c.sni.fastly.net'",),))'
The command "conan install .. --build missing" exited with 1.根据错误中的建议，我试图让特拉维斯使用Python3，看看这是否可以解决问题，但我没有运气。首先，我将python3添加到我的packages:，如下所示：
matrix:
include:
- os: linux
dist: trusty
sudo: required
env:
- CC_COMPILER=gcc-7
- CXX_COMPILER=g++-7
- BUILD_TYPE=RelWithDebInfo
addons:
apt:
packages:
- python3
- gcc-7
- g++-7
sources:
- ubuntu-toolchain-r-test但我收到了与上面相同的错误。然后我尝试alias命令：
install:
- |
if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then
sudo pip install conan
alias python=python3
fi然而，我得到了相同的结果。
如何让Travis-CI对柯南使用python3？或者，有没有其他方法可以让我的conan install命令工作？
谢谢!
回答 2
Stack Overflow用户
发布于 2018-11-07 23:52:16
使用conan new pkg/version -s -cilg生成的默认配置项脚本可能会有所帮助。它们包含如下内容：
linux: &linux
os: linux
dist: xenial
sudo: required
language: python
python: "3.6"
services:
- docker
matrix:
include:
- <<: *linux
env: ...
install:
- chmod +x .travis/install.sh
- ./.travis/install.sh和安装脚本：
pip install conan --upgrade
pip install conan_package_tools
conan user所以它不是声明为一个包，而是在根级别定义的，这似乎足以在以后将其与纯pip install一起使用。
Stack Overflow用户
发布于 2019-01-09 21:30:16
好吧，如果我没看错的话，这里的问题不是python3。错误是：
CertificateError("hostname 'curl.haxx.se' doesn't match 'c.sni.fastly.net'",所以ssl有些可疑之处。当使用ssl / https时，Python2确实会产生不安全的平台警告，但这很少是问题所在。
至于Travis上的python3 -我个人不能让柯南在python3的CI中工作。但基本步骤是：
apt:
packages:
- python3
- python3-pip
...要使用python3安装conan：
sudo pip3 install conan请注意，在您的示例install中，您的名称为pip -它将使用python3安装conan，当从命令行调用它时，尽管有别名，它仍将由python2运行。要使用的解释器实际上在conan脚本中。
https://stackoverflow.com/questions/53171865
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