Add a check_compatibility method to PluginMixin

On 3.x

https://github.com/spyder-ide/spyder/blob/master/spyder/api/plugins.py

Create a new method for class SpyderPluginWidget(PluginWidget):

# For instance Qt4 can be checked here or other things...

    def check_compatibility(self):
        """
        This method can be implemented to check compatibility of plugin on a given os.

        `message` should give information in case of non compatibility:
        For example: 'This plugin does not work with Qt4'
        """
        message = ''
        valid = True
        return valid, message

On top of this we need to change the loading of plugins to load it only if compatible

@ccordoba12, @andfoy, @rlaverde comments, ideas?

[ccordoba12]

Sorry, check_compatibility has to be called in the __init__ method of SpyderPluginWidget:

https://github.com/spyder-ide/spyder/blob/3.x/spyder/plugins/__init__.py#L539

That way it will be run every time a plugin is created.

@dalthviz, please add the check_compatibility method to SpyderPluginWidget with @goanpeca suggestion, then call it in its __init__ method.

[ccordoba12]

Yes, that’s the idea, and use check_compatibility instead.

But @goanpeca, then check_compatibility should be the first thing to run in register_plugin, right? That way, if compatibility is not satisfied, the plugin would not continue the registering process, and will show a (non-modal) QMessageBox instead.