if ($env:PYPY -or $env:PYPY3) {

if($env:PYPY3){

$env:PYPY_EXE='pypy3.exe'

$env:PYPY=$env:PYPY3

} else {

$env:PYPY_EXE='pypy.exe'

}

$env:PYPY = $env:PYPY + '-win32'

$env:PYTHON = 'C:\' + $env:PYPY + '\' + $env:PYPY_EXE

$env:PATH += ';' + 'C:\' + $env:PYPY + '\'

$PYPY_DOWNLOAD = 'https://downloads.python.org/pypy/' + $env:PYPY + '.zip'

Invoke-WebRequest $PYPY_DOWNLOAD -OutFile C:\pypy.zip

& '7z' x C:\pypy.zip -oC:\

& $env:PYTHON -m ensurepip

}

if ($env:WEB_PYTHON) {

$PYTHON_INSTALLER = 'C:\python-webinstall.exe'

Start-FileDownload $env:WEB_PYTHON -FileName $PYTHON_INSTALLER

Start-Process $PYTHON_INSTALLER -Wait -ArgumentList "/quiet InstallAllUsers=1 TargetDir=C:\UserPython Include_doc=0 Include_launcher=0 Include_test=0 Shortcuts=0"

$env:PYTHON = 'C:\UserPython\python.exe'

}

& $env:PYTHON -m pip install --disable-pip-version-check --no-warn-script-location "virtualenv>=20"

& $env:PYTHON -m virtualenv venv

if($LastExitCode -ne 0) { $host.SetShouldExit($LastExitCode ) }