Fix AppVeyor integration

.appveyor.yml

@@ -40,15 +40,13 @@ build_script:
  Where-Object pullRequestId -eq $env:APPVEYOR_PULL_REQUEST_NUMBER)[0].buildNumber) { `
  throw "There are newer queued builds for this pull request, failing early." }
  - SET "PATH=%CYG_ROOT%\bin;%PATH%"
- # HACK: test to see whether this prevents segfaults on 32 bit builds.
- - bash -lc "python -m pip install --upgrade pip"
- # gcovr install done here so it uses cygwin python we installed
- - bash -lc "python -m pip install gcovr"
+ - python -m pip install gcovr # for coverage reporting later on
  - bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./etc/ci-prepare.sh"
 
 test_script:
  - bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./etc/ci.sh"
 
 on_success:
- - bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./etc/ci-gather-coverage.sh"
+ # make sure to use AppVeyor's Python (not Cygwin's) in the next step
+ - bash -lc "export PATH="/cygdrive/c/Python27:/cygdrive/c/Python27/Scripts:$PATH" ; cd $APPVEYOR_BUILD_FOLDER && ./etc/ci-gather-coverage.sh"
  - bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./etc/ci-run-codecov.sh"