gh-107814: Avoid output from Nuget installation in find_python.bat (GH-107815)

Author: maxbachmann

Misc/NEWS.d/next/Build/2023-08-09-17-05-33.gh-issue-107814.c0Oapq.rst

@@ -0,0 +1 @@
+When calling ``find_python.bat`` with ``-q`` it did not properly silence the output of nuget. That is now fixed.

PCbuild/find_python.bat

@@ -52,7 +52,7 @@
 @if "%_Py_NUGET%"=="" (set _Py_NUGET=%_Py_EXTERNALS_DIR%\nuget.exe)
 @if "%_Py_NUGET_URL%"=="" (set _Py_NUGET_URL=https://aka.ms/nugetclidl)
 @if NOT exist "%_Py_NUGET%" (
-    @echo Downloading nuget...
+    @if not "%_Py_Quiet%"=="1" @echo Downloading nuget...
     @rem NB: Must use single quotes around NUGET here, NOT double!
     @rem Otherwise, a space in the path would break things
     @rem If it fails, retry with any available copy of Python
@@ -63,7 +63,11 @@
 )
 
 @if not "%_Py_Quiet%"=="1" @echo Installing Python via nuget...
-@"%_Py_NUGET%" install pythonx86 -ExcludeVersion -OutputDirectory "%_Py_EXTERNALS_DIR%"
+@if not "%_Py_Quiet%"=="1" (
+    @"%_Py_NUGET%" install pythonx86 -ExcludeVersion -OutputDirectory "%_Py_EXTERNALS_DIR%"
+) else (
+    @"%_Py_NUGET%" install pythonx86 -Verbosity quiet -ExcludeVersion -OutputDirectory "%_Py_EXTERNALS_DIR%"
+)
 @rem Quote it here; it's not quoted later because "py -x.y" wouldn't work
 @if not errorlevel 1 (set PYTHON="%_Py_EXTERNALS_DIR%\pythonx86\tools\python.exe") & (set _Py_Python_Source=found on nuget.org) & goto :found