说明

最近在尝试使用paddlenlp和paddleocr，安装paddlenlp很顺利，但是安装paddleocr时遇到了一些问题，记录一下
首先说一下我个人的主要环境配置：
系统：win10
python环境：3.7
paddlenlp 2.4.2
paddlepaddle 2.3.2
pip 22.3
有一些类似于Shapely 的包，需要下载手动安装，报错缺少安装即可，教程很多，这里不再解释，记录一下没搜到的问题，最后时在github上求助得到解决的。

问题

pip安装paddleocr报错
有一些其他问题，但是较好解决
下面这个错误没有找到相关方案

Failed to build lanms-neo
ERROR: Could not build wheels for lanms-neo, which is required to install pyproject.toml-based projects

第一次尝试

于是我上GitHub进行了提问，回复很快（应该是官方人员），现在把过程记录下来
首先是让我尝试直接安装lanms-neo

pip install lanms-neo -i http://pypi.douban.com/simple --trusted-host pypi.douban.com

跟之前直装paddleocr是一样的问题，依旧报错

(venv) D:\Program Files\paddle_NLP>pip install lanms-neo -i http://pypi.douban.com/simple --trusted-host pypi.douban.com
Looking in indexes: http://pypi.douban.com/simple
Collecting lanms-neo
Downloading http://pypi.doubanio.com/packages/7b/fe/beff7e7e4455cb9f69c5734897ca8552a57f6423b062ec86b2ebc1d79c0d/lanms_neo-1.0.2.tar.gz (39 kB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: lanms-neo
Building wheel for lanms-neo (pyproject.toml) ... error
error: subprocess-exited-with-error

× Building wheel for lanms-neo (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [10 lines of output]
running bdist_wheel
running build
running build_py
creating build
creating build\lib.win-amd64-cpython-37
creating build\lib.win-amd64-cpython-37\lanms
copying lanms_init_.py -> build\lib.win-amd64-cpython-37\lanms
running build_ext
building 'lanms._C' extension
error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for lanms-neo
Failed to build lanms-neo
ERROR: Could not build wheels for lanms-neo, which is required to install pyproject.toml-based projects

检查了Microsoft Visual C++ 的版本，也是14+，跟这个其实没关系

第二次尝试

更换版本
应该是官方维护人员，建议安装2.6.0.3或2.6.0.2试试

最后使用2.6.0.2安装成功，但是2.6.0.3还存在相同问题
不过也可以使用了