move installing comtypes command

appveyor.yml

@@ -86,7 +86,9 @@ install:
   # compiled extensions and are not provided as pre-built wheel packages,
   # pip will build them from source using the MSVC compiler matching the
   # target Python version and architecture
+  - "%PYTHON%\\python.exe -m pip install --upgrade pip"
   - "%CMD_IN_ENV% pip install -r dev-requirements.txt"
+  - "%CMD_IN_ENV% python -c \"import os,subprocess; os.environ.get('UIA_SUPPORT')=='YES' and subprocess.check_output(['pip','install','comtypes'])\""
 
   # Enable desktop (for correct screenshots).
   #- ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-desktop.ps1'))

ci/install.ps1

@@ -84,12 +84,6 @@ function UpdateConda ($python_home) {
     Start-Process -FilePath "$conda_path" -ArgumentList $args -Wait -Passthru
 }
 
-function InstallComtypes ($python_home) {
-    $pip_path = $python_home + "\Scripts\pip.exe"
-    $args = "install comtypes"
-    Start-Process -FilePath "$pip_path" -ArgumentList $args -Wait -Passthru
-}
-
 function main () {
     try {
         $CurrentResolution = Get-DisplayResolution
@@ -104,9 +98,6 @@ function main () {
     Write-Host "PYTHON_ARCH=" $env:PYTHON_ARCH
     Write-Host "UIA_SUPPORT=" $env:UIA_SUPPORT
 
-    if ($env:UIA_SUPPORT -eq "YES") {
-        InstallComtypes $env:PYTHON
-    }
     #InstallMiniconda $env:PYTHON_VERSION $env:PYTHON_ARCH $env:PYTHON
     #UpdateConda $env:PYTHON
     #InstallCondaPackages $env:PYTHON "pywin32 Pillow coverage nose"