[KED-1124] kedro install fails to update the installed kedro version

Description

kedro install is unable to change/update/uninstall the currently installed kedro version

Context

I was trying to get started with a kedro project, and I needed kedro to be able to run kedro install, so I ran pip install kedro before doing anything else

Steps to Reproduce

1. pip install kedro (this gave me kedro 0.15.3)
2. Clone a git repository with a kedro project, which was intialized with kedro 0.15.1, so that kedro==0.15.1 was specified in the requirements.txt file
3. Run kedro install in the context of that project

Expected Result

I expected the kedro install command to complete without problems.

Actual Result

I got an error like this:

  Found existing installation: kedro 0.15.1
    Uninstalling kedro-0.15.1:
      Successfully uninstalled kedro-0.15.1
ERROR: Could not install packages due to an EnvironmentError: [WinError 5] Ingen tilgang: 'C:\\Users\\Iver\\AppData\\Local\\Temp\\pip-uninstall-4ty9ouew\\kedro.exe'
Consider using the `--user` option or check the permissions.

“Ingen tilgang” translates to “Access is denied”. I think this occurs because kedro.exe is being used (by kedro install) while the pip subprocess is trying to uninstall it (kedro.exe) before replacing it with a different version.

Your Environment

Include as many relevant details about the environment in which you experienced the bug:

• Kedro version used (pip show kedro or kedro -V): See notes above
• Python version used (python -V): 3.7.4 (64-bit) installed with conda
• Operating system and version: Windows 10

[iver56]

In that case, you could implement something like this until a better solution is in place:

function kedro install:
    if os is windows and kedro version would be changed by running kedro install:
        print("This command would try to change the installed kedro version. This does not work on Windows at the moment. Please run this command instead: `pip install ...(insert proper command`")
        exit()
    else:
        # perform normal kedro install procedure

Another question to ask is: What value does kedro install add compared to just running pip install -r requirements.txt? A shorter (albeit unfamiliar and potentially confusing to new users) command? If the provided value is not worth the cost, would it be better to remove it?

[mzjp2]

Nice one @DmitriiDeriabinQB! 🚀