Some test cases try to run ipy with -I and fail in release mode

[slozier]

This is basically like trying to import a module when running from the bin/Release folder without having set IRONPYTHONPATH. Because our standard libary is not in the normal location it fails to import.

For example.

bin/Release/net46/ipy.exe -I -c "import runpy"

will always fail because the standard library is not found on the path.

In 3.6, some tests, in test_gzip and test_macpath for example, use the test.support.script_helper.assert_python_ok method which runs ipy in isolated mode by default. This is causing failures.

A workaround was added to #1427 and should be reverted once this is resolved.

---

Edit for searchability: The -I command line options is used to isolate Python from the user's environment (implies -E and -s)

[BCSharp]

I know that this was done on purpose, but why the full Lib is not copied or linked into bin/Release/*/?

[slozier]

I know that this was done on purpose, but why the full Lib is not copied or linked into bin/Release/*/?

Not sure exactly what the reasoning was (if it was my call then I forgot all about it). We can certainly reconsider - I seem to recall a few cases of people having issues getting the release build to run because of this (e.g. #821).

[BCSharp]

I always assumed that it was to make the staging build simpler, but since my recent dive into the IronPython MSBuild scripts I don't think it makes much difference. Maybe worth trying and seeing what happens (beside having this issue go away).