Script para ativar python virtualenvs no windows. Tenta recursivamente até a raiz.

activate.bat

@echo off

set venvdir=%1
for /f "delims==" %%d in ('cd') do set currentDir=%%d


call :reset-el

if not "%venvdir%" == "" (
    call %venvdir%\Scripts\activate
) else (
    call :attempt
)

goto :eof


:attempt
    :loop
        call :try-activate .
        for /f "delims==" %%d in ('cd') do set envdir=%%d
        if "%envdir%" == "C:\" goto :finishNotFound
        if %errorlevel% equ 0 goto :finish
        cd ..
        goto :loop

    goto :eof



:try-activate
    call :reset-el
    if exist %1\venv (
        call %1\venv\Scripts\activate
        exit /b 0
    ) else if exist %1\Scripts\activate (
        call %1\Scripts\activate
        exit /b 0
    )
    exit /b 1


:reset-el
    exit /b 0


:finishNotFound
    cd %currentDir%
    echo activate: virtual env not found
    exit /b

:finish
    cd %currentDir%
    echo activate: virtual env found in %envdir%
    exit /b