Failed to generate vsproj with scons 4.6.0

[charlietsao]

Godot version

4.1.3-stable

System information

Windows 10

Issue description

Scons build succeed. However, scons generate vsproj failed：

> scons p=windows vsproj=yes
scons: Reading SConscript files ...
Auto-detected 16 CPU cores available for build parallelism. Using 15 cores by default. You can override it with the -j argument.
Found MSVC version 14.2, arch x86_64
Building for platform "windows", architecture "x86_64", target "editor".
KeyError: 0:
  File "E:\fdx\godot\SConstruct", line 971:
    methods.generate_vs_project(env, ARGUMENTS, env["vsproj_name"])
  File "E:\fdx\godot\methods.py", line 780:
    batch_file = find_visual_c_batch_file(env)
  File "E:\fdx\godot\methods.py", line 732:
    return find_batch_file(env, version, host_platform, target_platform)[0]
  File "C:\Users\fdx\AppData\Local\Programs\Python\Python310\lib\site-packages\SCons\Tool\MSCommon\vc.py", line 929:
    vernum = float(get_msvc_version_numeric(msvc_version))
  File "C:\Users\fdx\AppData\Local\Programs\Python\Python310\lib\site-packages\SCons\Tool\MSCommon\vc.py", line 504:
    return ''.join([x for x in msvc_version if x in string_digits + '.'])
  File "C:\Users\fdx\AppData\Local\Programs\Python\Python310\lib\site-packages\SCons\Tool\MSCommon\vc.py", line 504:
    return ''.join([x for x in msvc_version if x in string_digits + '.'])
  File "C:\Users\fdx\AppData\Local\Programs\Python\Python310\lib\site-packages\SCons\Environment.py", line 586:
    return self._dict[key]

Steps to reproduce

1. Install Visual Studio 2019
2. run scons p=windows vsproj=yes

Minimal reproduction project

No project, just build.

[akien-mga]

Which scons version do you have installed?

[charlietsao]

Which scons version do you have installed?

It's v4.6. Sorry I accidentally closed the issue just now.

> scons --version
SCons by Steven Knight et al.:
        SCons: v4.6.0.e5eef322a4a727b96358a436dca46e8085ac8692, Sun, 19 Nov 2023 17:22:20 -0700, by bdbaddog on M1Dog2021
        SCons path: ['C:\\Users\\fdx\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\SCons']
Copyright (c) 2001 - 2023 The SCons Foundation

[akien-mga]

I just tried on Windows with SCons 4.6.0 and I can reproduce the issue too. It must be a regression from the newly released 4.6.0.

[brno32]

I think something like #84553 could help in this situation, but that would require quite a few documentation updates as mentioned by @YuriSizov and wouldn't be consistent with how other dependencies are used within the project.

That aside, it is a good question as to what a user should do in this situation. Until SСons releases a patch, anyone who tries to compile godot from source and follows the docs with vsproj=yes will encounter this error, as plain ol' pip install scons is broken for the time being (since it grabs the latest version).