本文说明如何处理升级west后出现requires_workspace的问题。

最近将west升级到最新版本0.72后无论执行west的什么命令都会出现下面的问题

File "/home/frank/.local/bin/west", line 11, in <module>
  sys.exit(main())
File "/home/frank/.local/lib/python3.6/site-packages/west/app/main.py", line 767, in main
  app = WestApp()
File "/home/frank/.local/lib/python3.6/site-packages/west/app/main.py", line 64, in __init__
  lst = [cls() for cls in classes]
File "/home/frank/.local/lib/python3.6/site-packages/west/app/main.py", line 64, in <listcomp>
  lst = [cls() for cls in classes]
File "/home/frank/.local/lib/python3.6/site-packages/west/app/project.py", line 153, in __init__
  requires_workspace=False)

原始解法

最开始以为是安装错误，卸载了又重新装还是一样，后来以为是设置问题，又去mail list里面翻了一遍没找到。还是见招拆招吧，修改了下面几个文件

1
2
3

.local/lib/python3.6/site-packages/west/app/project.py
.local/lib/python3.6/site-packages/west/app/main.py
.local/lib/python3.6/site-packages/west/app/config.py

将这几个文件中init 方法的 requires_workspace=False 直接删除掉就可以了

真实原因

虽然改了后west能工作了，但总觉得还是不稳妥，于是上mail list提问，见链接https://lists.zephyrproject.org/g/devel/topic/west_0_7_2_can_t_work/71967531?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,71967531
很快有了答复，因为新老版本不兼容，需要先删除老版本的west再装新的版本

$ pip3 show west | grep Location: | cut -f 2 -d ' '
 /home/foo/.local/lib/python3.6/site-packages
 $ rm -r /home/foo/.local/lib/python3.6/site-packages/west
 $ pip3 install --user west==0.7.0

详细见https://lists.zephyrproject.org/g/announce/message/86

后记

最开始在mail list是以requires_workspace为关键字搜索该问题，没有搜到。其实git issue里面已经有人报了，详见https://github.com/zephyrproject-rtos/west/issues/373，如果在issue里面以requires_workspace为关键字搜索是可以找到答案的，所以有问题除了mail list外，issue内也找一下比稳妥，避免浪费答题者的时间。