$VCVars64 = "`"C:/Program Files (x86)/Microsoft Visual Studio/2019/BuildTools/VC/Auxiliary/Build/vcvars64.bat`""

cmd /c "$VCVars64 > nul 2>&1 && set" | . { process {
    if ($_ -match '^([^=]+)=(.*)') {
        [System.Environment]::SetEnvironmentVariable($matches[1], $matches[2])
    }
}}