Fl4m3Ph03n1x

Fl4m3Ph03n1x

Background

I am trying to run the demo app desktop-example-app showed in Elixir Berlin meetup February 2021:

I have followed all the necessary setup steps from the installation guide for Ubuntu:

sudo apt install inotify-tools libtool automake libgmp-dev make libwxgtk-webview3.0-gtk3-dev libssl-dev libncurses5-dev curl git
sudo apt install libjpeg-dev libpng-dev libtiff-dev zlib1g-dev libncurses5-dev libssh-dev unixodbc-dev libgmp3-dev libwxbase3.0-dev libwxgtk3.0-gtk3-dev libwxgtk-webview3.0-gtk3-dev libsctp-dev lksctp-tools build-essential libgtk-3-dev libnotify-dev libsecret-1-dev catch

mkdir ~/projects && cd ~/projects
git clone https://github.com/wxWidgets/wxWidgets.git
cd wxWidgets; 
git checkout v3.1.5
./configure --prefix=/usr/local/wxWidgets --enable-clipboard --enable-controls \
      --enable-dataviewctrl --enable-display \
      --enable-dnd --enable-graphics_ctx \
      --enable-std_string --enable-svg \
      --enable-unicode --enable-webview \
      --with-expat --with-libjpeg \
      --with-libpng --with-libtiff \
      --with-opengl --with-zlib \
      --disable-precomp-headers --disable-monolithic

make -j4

And I have the rest of the dependencies installed via asdf in the project:

erlang 24.0
elixir 1.12.2-otp-24
sqlite 3.36.0
nodejs 12.16.1

Problem

The installation went without any issues as far as I can tell. However, when I execute the script ./run to launch the application, I get the following error:

error] Process #PID<0.383.0> terminating
** (exit) {:bad_return, {{TodoApp, :start, [:normal, []]}, {:EXIT, {{:badmatch, {:error, {{:EXIT, {{:badmatch, {:error, {{:undefined_function, {:wxWebView, :new, 0}}, [{:wxe_util, :rec, 1, [file: 'wxe_util.erl', line: 110]}, {Desktop.Fallback, :webview_new, 1, [file: 'lib/desktop/fallback.ex', line: 88]}, {Desktop.Window, :init, 1, [file: 'lib/desktop/window.ex', line: 175]}, {:wx_object, :init_it, 6, [file: 'wx_object.erl', line: 404]}, {:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 226]}]}}}, [{Desktop.Window, :start_link, 1, [file: 'lib/desktop/window.ex', line: 103]}, {:supervisor, :do_start_child_i, 3, [file: 'supervisor.erl', line: 414]}, {:supervisor, :do_start_child, 2, [file: 'supervisor.erl', line: 400]}, {:supervisor, :handle_start_child, 2, [file: 'supervisor.erl', line: 706]}, {:supervisor, :handle_call, 3, [file: 'supervisor.erl', line: 455]}, {:gen_server, :try_handle_call, 4, [file: 'gen_server.erl', line: 721]}, {:gen_server, :handle_msg, 6, [file: 'gen_server.erl', line: 750]}, {:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 226]}]}}, {:child, :undefined, TodoWindow, {Desktop.Window, :start_link, [[app: :todo_app, id: TodoWindow, title: "TodoApp", size: {600, 500}, icon: "icon.png", menubar: TodoApp.MenuBar, icon_menu: TodoApp.Menu, url: &TodoWeb.Endpoint.url/0, app: :todo_app, id: TodoWindow]]}, :permanent, false, 5000, :worker, [Desktop.Window]}}}}, [{TodoApp, :start, 2, [file: 'lib/todo_app.ex', line: 24]}, {:application_master, :start_it_old, 4, [file: 'application_master.erl', line: 293]}]}}}}
    (kernel 8.0) application_master.erl:142: :application_master.init/4
    (stdlib 3.15) proc_lib.erl:226: :proc_lib.init_p_do_apply/3
Initial Call: :application_master.init/4
Ancestors: [#PID<0.382.0>]
Message Queue Length: 1
Messages: [{:EXIT, #PID<0.384.0>, :normal}]
Links: [#PID<0.382.0>, #PID<0.44.0>]
Dictionary: []
Trapping Exits: true
Status: :running
Heap Size: 1598
Stack Size: 29
Reductions: 252
** (Mix) Could not start application todo_app: exited in: TodoApp.start(:normal, [])
    ** (EXIT) an exception was raised:
        ** (MatchError) no match of right hand side value: {:error, {{:EXIT, {{:badmatch, {:error, {{:undefined_function, {:wxWebView, :new, 0}}, [{:wxe_util, :rec, 1, [file: 'wxe_util.erl', line: 110]}, {Desktop.Fallback, :webview_new, 1, [file: 'lib/desktop/fallback.ex', line: 88]}, {Desktop.Window, :init, 1, [file: 'lib/desktop/window.ex', line: 175]}, {:wx_object, :init_it, 6, [file: 'wx_object.erl', line: 404]}, {:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 226]}]}}}, [{Desktop.Window, :start_link, 1, [file: 'lib/desktop/window.ex', line: 103]}, {:supervisor, :do_start_child_i, 3, [file: 'supervisor.erl', line: 414]}, {:supervisor, :do_start_child, 2, [file: 'supervisor.erl', line: 400]}, {:supervisor, :handle_start_child, 2, [file: 'supervisor.erl', line: 706]}, {:supervisor, :handle_call, 3, [file: 'supervisor.erl', line: 455]}, {:gen_server, :try_handle_call, 4, [file: 'gen_server.erl', line: 721]}, {:gen_server, :handle_msg, 6, [file: 'gen_server.erl', line: 750]}, {:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 226]}]}}, {:child, :undefined, TodoWindow, {Desktop.Window, :start_link, [[app: :todo_app, id: TodoWindow, title: "TodoApp", size: {600, 500}, icon: "icon.png", menubar: TodoApp.MenuBar, icon_menu: TodoApp.Menu, url: &TodoWeb.Endpoint.url/0, app: :todo_app, id: TodoWindow]]}, :permanent, false, 5000, :worker, [Desktop.Window]}}}
            (todo_app 0.0.1) lib/todo_app.ex:24: TodoApp.start/2
            (kernel 8.0) application_master.erl:293: :application_master.start_it_old/4

I have wxWidgets installed, but it looks like it can’t find it. This is my OS version:

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.3 LTS
Release:        20.04
Codename:       focal
(base) pedro:~/Workplace

How can I fix the issue?

Showing Posts 1 to 5

axelson

axelson

Scenic Core Team

Did you compile Erlang with the local version of wxWidgets? Instructions are on the page in the “Install Erlang OTP/24” section (although the header of that section should probably mention wxWidgets to make it more clear that you need to follow it even if you have Erlang/OTP 24 already installed.

Fl4m3Ph03n1x

Fl4m3Ph03n1x OP

I installed erlang with asdf like I normally do.

asdf install erlang 24.0

Perhaps this is not sufficient ?

axelson

axelson

Scenic Core Team

It is not. With that command the system version of wx will be used (which doesn’t support the web browser window, which results in the error you received). You might be able to get away with not including the LD_LIBRARY_PATH variable. I don’t remember if I set that when I was playing with the library. Also I’m fairly sure that the asdf-erlang plugin will read KERL_CONFIGURE_OPTIONS but you may need to double-check. Good luck! I’m pretty excited about this library as well :grin:

Fl4m3Ph03n1x

Fl4m3Ph03n1x OP

I installed everything according to the page. The result wasn’t any better. I also installed and compiled wxWidgets from source and yet nothing.

The one thing that ended up saving me was this discussion:
https://github.com/asdf-vm/asdf-erlang/issues/203

Where they suggest the following commands:

asdf plugin-update --all
asdf install erlang 24.0.1

Indeed, installing version 24.0.1 with asdf fixed the issue for me.

dominicletz

dominicletz

Creator of Elixir Desktop

Great you could solve this! Hopefully, this is going to get easier with forthcoming OTP releases. If you have any further issues/feedback feel free to @mention me directly in a post or send a message on the Elixir slack.

Cheers!

— All posts loaded —

Where Next? Top

Trending in Questions Top

katta
I having some trouble figuring out if I have set myself too strict of standards for my production server. Currently I can handle 75% of r...
New
achenet
Hello, I’m trying to build a basic Phoenix web-app, and I’d like to use Tailwind. However, when I launch mix phx.server, I get an error...
New
bradley
I really like the adapter patterns that ecto, nebulex, waffle, etc. use and would love find something similar for a key management servic...
New
unaware8150
Hello folks! So at work, we are seeing some situations where we have to define some “fixed” strings that are used across the codebase in...
New
Cxx-mlr
I’m working on a small exercise involving update_in/3, and I came up with this solution: data = %{ name: "Periodic Table", category:...
New
ChrisAmelia
I’ve got trouble wrapping my head around the order in which functions are called in this snippet (from Phoenix’s authentication): toke...
New
dillonoconnor
Is there any way to avoid the Hologram compiler running when using iex? It seems like the front-end code could potentially be disregarded...
New

Other Trending Topics Top

GenericJam
Edit: 2026 May 15 - This post is archived. Mob is alive!! Main docs: mob v0.7.11 — Documentation A bit of explanation for the slightly c...
New
garrison
Hobbes is a low-level distributed database for the Elixir programming language. Hobbes provides a simple, safe, and scalable storage lay...
New
budgie
A little off-topic, but I feel like people here have a good head on their shoulders. I used to be quite good at making software. Was luc...
New
KristerV
Hey. Is there anyone here who creates agents in their apps? Not talking about using agents, but creating them. I’m finding it pretty diff...
New
mudasobwa
I fully migrated to my own harness from Anthropic/Gemini and I think it’s time to share it. Welcome DSH, the DeepSeek Harness, fully writ...
New
mcass19
ExRatatui lets you cook up rich terminal UIs in Elixir, powered by Rust’s ratatui via Rustler NIFs. Build interactive terminal applicatio...
New

We're in Beta

About us Mission Statement

Options

Thread Display Mode




Thread Preview

Skip Thread Previews