【e2e】espnet框架安装问题集锦

搞了两三天终于把端到端工具给安装好（见上图），遇到不少坑。现在把这些坑整理出来，一是记录一下，二是分享出来。

问题1：源代码下载太慢，容易超时失败

解决：pip install -i https://pypi.tuna.tsinghua.edu.cn/simple （添加新的镜像地址）

问题2：venv 屡屡创建失败

解决：重新make clean 一下即可

问题3：pytorch版本与基于python的其它组件（如warprnnt_pytorch、warpctc_pytorch）版本不一致导致的错误

检查错误如下所示：

 1 . venv/bin/activate; python check_install.py --torch-version 1.0.1
 2 INFO: python version = 3.7.7 (default, May  7 2020, 21:25:33) 
 3 [GCC 7.3.0]
 4 INFO: library availableness check start.
 5 INFO: # libraries to be checked = 9
 6 WARNING: --> espnet is not installed.
 7 INFO: --> kaldiio is installed.
 8 INFO: --> matplotlib is installed.
 9 INFO: --> torch is installed.
10 INFO: --> chainer is installed.
11 INFO: --> chainer_ctc is installed.
12 WARNING: --> warprnnt_pytorch is not installed.
13 INFO: --> cupy is installed.
14 WARNING: --> warpctc_pytorch is not installed.
15 INFO: library availableness check done.
16 INFO: 6 / 9 libraries are correctly installed.
17 INFO: please try to setup again and then re-run this script.
18 Makefile:162: recipe for target 'check_install' failed
19 make: *** [check_install] Error 1