Questions tagged [development]

For questions about software development and related tools on elementary OS

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How do I set up a Vala project with multiple namespaces in Meson?

I realize this is a bit beyond the scope of elementary OS, per se, but all y'all seem to be the main users of Vala, and I'm not sure where else to ask this. I am working on a project with a large ...
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Publishing GTK4 apps on AppCenter?

I've been working on a GTK4 app and was wondering if I could publish it on the AppCenter The official documentation doesn't seem to say anything about GTK4 specifically, only that it must be "...
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.Net support to deliver elementary apps

Now .NET release 6 allows multiplatform development, is there something planed to ease .Net development platform to deliver elementary apps ? Regards
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How can I draw basic 3d with Vala?

I'd like to make a visualizer in Vala for EOS. The first chunk I'd like to achieve is drawing a rotating red cube. I tried valadoc for "3d" and "gpu" but it only came up with non-...
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Why does compiling gala from source not work unless I change how HashMap is used?

When I grab gala source either from GitHub or from apt source gala I get version 3.3.2 and when I run ninja to build it I get this error: ../src/Background/BackgroundSource.vala:123.17-123.34: error: ...
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What is the currently recommended development setup?

I want to contribute to some elementaryOS apps, like Mail and Files. If I'm on 5.1, the versions of meson and valac are too old for those applications, as specified in their meson.build files. If I'm ...
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2 answers
217 views

Flatpak manifest for new apps?

Is Flatpak manifest file still needed for new apps? I read about it here: https://docs.elementary.io/develop/writing-apps/our-first-app/packaging but I also checked some Elementry OS apps sources on ...
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Create your root folder called "gtk-hello"

I am learning to code following the instructions on the elementary website. It said Create your root folder called "gtk-hello" My question is how do I Create this? Thanks for taking the time ...
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1 answer
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StackSIdebar is not visible

I used Gtk.StackSidebar to create a sidebar for an app that I am making. https://github.com/Suzie97/Project_X97, this is the link to my github repo. The sidebar is not correctly visible on the window. ...
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1 answer
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Window position and size not saved when app is closed

I made this simple application and made it so that the window position and size is saved on closing the app, so that the next time the user opens the app, he can resume his work directly. https://...
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gsettings schema isnt installed

I am learning to make apps for Elementary OS. I wrote my app it compiles well without any errors. But when I try to open the application, it displays a message stating gsettings schema isnt installed. ...
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2 answers
265 views

What happened to the Elementary OS Discord server?

I have looked online and found the Elementary OS discord server but all the links say they are invalid.
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How to add granite package

What package do I need to add to my project in order to use granite? All I get is "The name `Granite' does not exist in the context of..." I tried libgranite-dev but it isn't found. Also, ...
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Do I have to use Vala to build my app to get it on the App Store?

I notice they have Vala shown front and center, but I'd much rather use electron with React so I don't have to learn a whole new language. Would they accept a submission in React? Found this: Your ...
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How to compile and install changes to Elementary?

I just decided to switch over from Ubuntu 18.04 LTS to Elementary OS 5.1 (Hara) and like to tweak my desktop to hide the date/time in the top panel. I found an answer to hiding the date in the top ...
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Can't change value in struct property inside class

io = {}; io.wchar = 111111; debug((string)io.wchar); // (null) So the problem here is that io.wchar is still null. You can look at the whole class here: https://github.com/stsdc/monitor/blob/dev/src/...
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Developer Support?

Is there an official channel for developers. I tried to bring up the slack channel they had on the developer documentation but it seems to be offline. I'm stuck with an issue on the app that I'm ...
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2 votes
1 answer
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Flutter development environment in elementary OS

I am a beginner in using elementary OS. I really like the look and feel of the elementary OS and like to setup a development environment in my PC for flutter application development. I googled for ...
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How to develop wingpanel extension in plain C language?

I am trying to find a way to develop wingpanel extension in plain C code. Every time that I asked question about app development in elementary OS, They just said that you should learn Vala language. ...
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2 votes
1 answer
95 views

Debugging applications during development

I wanted to start working on issue https://github.com/elementary/calendar/issues/419 but I encountered a bug. So I wanted to debug the application code I added. I found this tutorial on debugging ...
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GTK# Apps in the Store

Looking through the documentation on Houston and other questions here, it is a hard requirement that all apps be a native GTK application for hosting on the store. Does that extend to GTK# due to the ...
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How to debug Gala and other system apps?

I see this other question on a debug workflow for app development. In it, the answer is to use printfs and viewing the printed data on a terminal, but I don't see how that's easy with things like Gala,...
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2 answers
122 views

Will we have an SDK for elementary OS?

Does the developer team have any plans to produce an SDk for the operating system? I imagine the great effort to produce a larger application.
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4 votes
1 answer
825 views

How to develop extensions for Code?

How can I develop an Extension for Code. I want to recreate atom's pigments package into Code.
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3 votes
1 answer
435 views

Setting up a development environment for elementaryOS apps?

what's the best tool chain for building elementary applications these days? I've been playing with an existing project that contains a lot of other magic (such as meson, ninja and the like), and while ...
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1 vote
0 answers
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Build fails appcenter bot test

I recently switched over to elementary os and a friend told me about how easy it is to develop apps for the os. I switch over and the first thing i instantly miss is whatsapp. I use it daily for work ...
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2 answers
154 views

Error with translations while following "Get Started" tutorial

I was following along with the "Getting Started" tutorial, and when I got to the step to add translations, my project started failing to compile. I can't make sense of the error. It would be really ...
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1 vote
2 answers
555 views

Is anyone a Node.js developer using elementary OS?

I am moving from Mac after 10 years and have chosen to go with Linux for both my desktop and laptop. I currently have Ubuntu 16.04 running and with a few visual tweaks I really like it. I have seen ...
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3 answers
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Why doesn't elementary OS include screensaver by default?

What made the developer's team to decide not to have a screensaver option on the elementary OS settings?
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2 votes
2 answers
160 views

App development with Ruby in elementary OS

Does any one have any prior experience with making gtk3 apps with Ruby, and the bindings to the apis for ruby (GObject etc)?
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-1 votes
1 answer
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Compiling with custom vapi leads to error

Added CUSTOM_VAPIS with vapi/libgtop-2.0.vapi to vala_precompile() in CmakeLists.txt and got this error: No rules for target '../src/vapi/libgtop-2.0.vapi' ... How to add vapi files properly?
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is vala dead? because it's a nice language [duplicate]

i've been following ubuntu since 9.04 installing it and trying it - then found gnome now that gnome is going to be standard desktop come next release - i thought i would like to be involved in ...
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1 vote
2 answers
178 views

Loki 0.4.1 and replacing Windows help

I have a new Alienware 13 r3 and it came pre-loaded with Windows 10. I read that Loki 0.4.1 supports everything on this Alienware model perfectly. Touch screen included. I'm looking to learn c# and ...
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cmake .. not found package

I'm try to build and install Photos, but cmake give me an error: No package 'geocode-glib-1.0' found Already try to install try to install libgeocode-glib0. Then install libgeocode-glib-dev and ...
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1 vote
2 answers
545 views

Unable to locate elementary-sdk

When a try: sudo apt install elementary-sdk it says Unable to locate package elementary-sdk It's a fresh install of loki. apt update give me a 404 error. Err:7 http://br.archive.ubuntu....
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1 vote
0 answers
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wxPython TaskBarIcon fails on elementaryOS

In eOS 0.4 (Loki) the wxPython (3.0.2 gtk2 classic) wx.TaskBarIcon.IsAvailable() method returns False and of course ignoring this just results in no icon being shown. Is there a workaround for this or ...
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Missing Library

I'm trying to get into developing for Elementary using Vala. I have been unsuccessfully trying to build Valama (an IDE for Vala) for ages but keep hitting hurdles. Currently when I try to make Valama ...
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1 answer
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WebKitGTK not installed / unknown version detected

Trying to build pantheon-mail I bump into this error when running cmake. CMake Error at src/CMakeLists.txt:493 (message): WebKitGTK not installed / unknown version detected Which version of ...
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4 votes
1 answer
135 views

Adding feature to elementary os

I am new in open source projects development and maintenance is there any guide to start adding features or editing ones in elementary os ?
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1 vote
1 answer
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How to write plugin for scratch text editor from elementary os?

I've been using scratch for quite some time and its features as an IDE are very limited. So I was wondering how to develop/install new third party plugins for it but I was unable to find any ...
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6 votes
5 answers
3k views

Concern about the future of vala

I'm prototyping an application using Vala, in hope of targeting elementary OS. It was actually the elementary website at Build for elementary OS that first steered me towards Vala. Now, Gnome is ...
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2 votes
1 answer
138 views

elementary OS application development databases?

Is there any resources/documentation on which database can be use to save application input data. I am trying to build an invoicing application for elementary OS Loki.
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Native/universal app format or easier to install apps for elementary os, plus a few other quick questions [closed]

Hello :) Just a few quick questions/suggestions, sorry about any grammatical mistakes, my english isn't too good but I'm learning I love the elementary os, i'm a huge fan! Thank you for creating it ...
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2 votes
1 answer
982 views

I've added the Daily PPA and Appstream causes an error when trying to upgrade

I've added the Daily PPA (don't worry, I have another partition with a stable elementary, this is just for learning) and when I try to apt upgrade -f (or the same without the -f) I get the following ...
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1 vote
1 answer
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StatusIcon not showing/working

Good morning dear community, i have a little trouble and i can't found any proper explanation for this issue, actually i'm developing an small application to hear radio streaming using Vala and ...
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1 vote
1 answer
78 views

Uninstalling hello-again App from elementary OS developer tutorial

I went through the Getting Started documentation this evening and successfully installed my hello-again App into my Applications menu. Now I'm trying to figure out how to uninstall it and having no ...
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0 votes
2 answers
98 views

Contributing to elementary OS team [duplicate]

I've been using elementary OS Freya for almost a year and recently switched to Loki, which is much better in every aspect. As a daily user of the OS, I see areas where I feel that some features can be ...
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0 votes
1 answer
41 views

Determine if Notebook or Desktop in Vala

I'm developing extension for wingpanel-indicator-power which allows you to change the screen brightness directory from the indicator. The the moment this is only possible by accessing the power ...
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In which thing OS is developed/written?

If it is another OS then how was the first OS made?
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How to publish on elementary os app center [duplicate]

I have made a game together with my friends and we thought I'd be great to have it on the elementary app store. How would you go about making that happen? Publish it to the official Ubuntu ...
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