Pkg output doesn't show in PlutoUI with_terminal() in Julia 1.6.1

Tooling Pluto
1

With julia 1.6.0 everything works as expected, however the output doesn’t show in 1.6.1:
1.6.0:

image
image1202×741 45.6 KB

1.6.1:
image
image1207×670 35.2 KB

What’s going on here, is this a bug in julia and/or PlutoUI?

Code to reproduce below

begin
	using Pkg;
	Pkg.add("PlutoUI")
	using PlutoUI
end

with_terminal() do
	println(VERSION)
	Pkg.activate(".")
end

with_terminal() do
	Pkg.status()
end
2

Confirmed:
julia-1.6.1:

Screenshot_20210509_174656
Screenshot_20210509_1746561058×608 26.9 KB

julia-1.6.0:

Screenshot_20210509_174922
Screenshot_20210509_1749221068×725 37.7 KB

Pluto v0.14.5

Seems worth reporting to Issues · JuliaPluto/PlutoUI.jl · GitHub

1 Like
3

I think that’s a Julia issue, fixed in https://github.com/JuliaLang/Pkg.jl/pull/2543

1 Like
4

Thanks, yes I was reluctant to filing an issue at PlutoUI if it was indeed a Julia issue.

I looks like import Pkg; Pkg.DEFAULT_IO[] = stdout should be a workaround, but it seems to make no difference for me in 1.6.1, unfortunately.

5

Since the redirection here happens in with_terminal you need to use this inside that, or simply pass stdout explicitly, e.g.

with_terminal() do
    Pkg.status(; io = stdout)
end
6

That doesn’t work, unfortunately, maybe something else is going on here as well?

image
image1191×795 49.6 KB

1 Like
7

Looks like a Pluto bug then, since this also fails (prints to the wrong stdout):

with_terminal() do
    println(stdout, "hello, world")
end
8

Thanks, that’s the same behavior in 1.6.0, though.

I gave it a shot in the latest nightly, where it works fine again, so it looks like it might be fixed with PR mentioned above:

image
image1227×393 25.7 KB

9

Yea, since it is a bug in Pluto I am guessing it applies to all Julia versions.

10

Right. It has to do with PlutoUI’s with_terminal using the Suppressor.jl macro @capture_out to capture the stdout, I think, but I couldn’t figure out exactly what the problem was.

In case anyone wants to have a closer look, that is.

11

Hi, still no solution to this issue? Does that mean that with_terminal can’t be used in new versions of Pluto?

12

Newer Pluto version actually capture output to the terminal directly and display it in the notebook without any user intervention:

image

13

Then I don’t understand what I do wrong. In my case:
Pkg.status() (in notebook)

[7f904dfe] PlutoUI v0.7.37 (in terminal, nothing shows up in notebooks)
From worker 2: [b77e0a4c] InteractiveUtils
From worker 2: [d6f4376e] Markdown
From worker 2: [44cfe95a] Pkg
From worker 2: [de0858da] Printf

14

Which Pluto version are you using?

15

Version 0.18.