how to install widgest/addon by hand,where is the dir for it?

[Franklyn1987]

Bug reports that do not sufficiently describe a bug are not helpful and will most likely be ignored.

• [ ] A clear and concise description. "I'm getting an error when I open a tree viewer" is far from enough (what kind of error? what kind of data you give it?). "I'm getting an error" is even worse.

• [ ] How to reproduce the problem. Upload a zip with a workflow and data, or describe the steps (open this widget, click there, then add this ...)

• [ ] Which version of Orange are you using? How did you install it?

• [ ] What is your operating system?

[ajdapretnar]

Bug reports that do not sufficiently describe a bug are not helpful and will most likely be ignored.

[markotoplak]

@ajdapretnar, you might have missed the title; in this case it may be clear enough. @Franklyn1987, thank you for pointing it out missing documentation.

There is no magic folder, though. Python's entry point mechanism is used to register widgets from a directory.

You can try various approaches depending on what are you trying to do:

• To install existing add-ons without the UI, you can do pip install add-on-name-or-file, just be careful that you use the pip command that is linked to the same python installation as Orange.
• If you want to quickly develop a new widget and try it out, just put that widget into a directory already containing existing widgets.
• To develop add-ons and see how entry points are registered, study https://github.com/biolab/orange3-example-addon (note Orange.widgets entry point definition in setup.py).