Test if Pluto initialized and running

[cormullion]

In reference to JuliaGraphics/Luxor.jl#90 (adding support for Pluto), is there a way to check whether Pluto is running? At the moment I run this for Jupyter:

(isdefined(Main, :IJulia) && Main.IJulia.inited) ? jupyter = true : jupyter = false

so want something similar for Pluto. Perhaps

(isdefined(Main, :PlutoRunner) 

might be sufficient - wonder if there's anything better?

[fonsp]

Hey!
Fun to hear from you! I actually wrote a workaround once to make Luxor work with Pluto - I will talk more about it in the issue that you mentioned.

About detecting whether you are in Pluto - this would work, but we don't really want this to be something that other packages rely upon, for two reasons.

First, we think that it should not be necessary. The only code that would need to specialize on the programming environment is display code and interaction code. Interaction code is a bit trickier (feel free to open an issue about it), but for display code: Julia has this very cool multimedia display system built in, and we want to use it!

Pluto's display system is a lot simpler than that of Juno and Jupyter - calling show or print from (package) just prints to the terminal (like in the REPL), and there are no internal systems to hook into. The only way to display something in Pluto is by having a cell return it. Rich output can be created by defining show methods for your types, for different MIME types.

The second reason is that Pluto is still in heavy development, including the runtime system, and we want to be free to make breaking changes in this area. (Breaking from the perspective of code for running in Pluto.) We want to find the right architecture before breaking it open for customization and specialized code.

Let's think together about the right solution for Luxor, I really want to make it work - it would be a very cool sample notebook!

[cormullion]

Great, thanks!

[cormullion]

Fixed by JuliaGraphics/Luxor.jl#91. Thanks!