If an enaml file imports pythonnet during startup, enaml file dialogs cause application to freeze

[jdw-creare]

Environment:

• Anaconda 3, python 3.7
• enaml 0.10.4, installed via conda
• pythonnet 2.4.0, installed via pip
• Windows 10

Steps to reproduce:

• Download clr_crash.enaml.txt
• Rename it to clr_crash.enaml (GitHub wouldn't let me upload with .enaml as the extension)
• Run enaml-run clr_crash.enaml
• Click "Open file dialog"
• Program will freeze

Interesting variant:

• Comment out import clr line at beginning of clr_crash.enaml
• Run enaml-run clr_crash.enaml
• Click "Import clr"
• Click "Open file dialog"
• Program will NOT freeze

I'm not sure if this is a pythonnet issue or an enaml issue, so I've reported the bug to both projects: pythonnet/pythonnet#1014
clr_crash.enaml.txt

conda_environment.txt

[sccolbert]

It's probably a weird interaction between pythonnet and Qt. I'm 99% sure it's nothing to do with enaml.