msys2/mingw setenv and os.exec issue

[waruqi]

Xmake Version

2.7.8

Operating System Version and Architecture

windows/msys/mingw64

Describe Bug

I'm having a problem where when I run os.exec("python --version") on msys2/mingw64, CreateProcess will preferentially look for python from the /mingw64/bin directory and run it, even though I've set it to the path I specified via os.setenv.

Perhaps because xmake is installed to /mingw64/bin/xmake, CreateProcess always gives the highest priority to finding the process from /mingw64/bin (if it exists), rather than from the $PATH environment variable.

I don't know how to fix it. It affects xmake's installation of packages under mingw.

Maybe I can only modify the install script to install the xmake executable in another path and then wrap it with the /mingw64/bin/xmake shell script.

Expected Behavior

it works

Project Configuration

No response

Additional Information and Error Logs

No response

[waruqi]

fix os.exec() call incorrect program from /mingw64/bin. e.g. python, ..

because xmake is installed to /mingw64/bin/xmake,
os.exec/CreateProcess always gives the highest priority to finding the process from /mingw64/bin (if it exists),
rather than from the $PATH environment variable.

we install the xmake executable into a separate directory to ensure
that os.exec() does not look for additional executables.

[waruqi]

maybe #4658

[StableAgOH]

maybe #4658

So can xmake.exe go back to ${MINGW_PREFIX}/bin now? Its current location is a bit inconvenient. (

[waruqi]

I'm not sure if this is the cause of it yet, I need to do more testing to verify it and if it has indeed been fixed I can restore it.

[waruqi]

maybe #4658

So can xmake.exe go back to ${MINGW_PREFIX}/bin now? Its current location is a bit inconvenient. (

I tried it, it still does not work, so I cannot revert it.

the current PATH

PATH=C:\Users\wangrunqing\AppData\Local\.xmake\packages\p\python\3.11.8\c78c5a743ed7468ba683cd8a5ff50255\
bin;C:\Users\wangrunqing\AppData\Local\.xmake\packages\p\python\3.11.8\c78c5a743ed7468ba683cd8a5ff50
255\Scripts;C:\msys64\mingw64\bin;C:\msys64\usr\local\bin;C:\msys64\usr\bin;C:\Windows\System32;C:\W
indows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\msys64\usr\bin\site_p
erl;C:\msys64\usr\bin\vendor_perl;C:\msys64\usr\bin\core_perl

when I call os.exec("python --version"), it still return incorrect python.

Python 3.10.11

/mingw64/bin
    - python 3.10.11
    - xmake.exe

we should get python 3.11.8

C:\Users\wangrunqing\AppData\Local\.xmake\packages\p\python\3.11.8\c78c5a743ed7468ba683cd8a5ff50255\
bin