Questions tagged [development]

For questions about software development and related tools on elementary OS

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14 views

How to update between early access nightlies?

I’m getting started with elementary OS on Raspberry Pi. I installed a nightly build a few days ago and would like to stay current by regularly updating to the latest nightly build. I couldn’t find ...
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10 views

HashMap not removing keys

I'm developing a simple chess game in vala (source code here) and i'm have some issues with removing keys from an HashMap. For the checkboard i'm using an HashMap with pair of Coordinate Object and ...
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9 views

Is it possible to make cross-platform apps that feel natural in elementary os?

I'd like to create an app for EOS but I don't want to target it alone. The best solution I've found is to use QT, but it appears that produces odd looking apps in EOS. Is there a way to have an app ...
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1answer
24 views

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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6 views

How to use Granite.SettingsSidebar?

I want to use the Granite.SettingsSidebar widget in my app. Can anyone teach me how to do it? I looked for tutorials and tips on the internet. I couldn't find any complete Vala tutorials so now I'm ...
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1answer
33 views

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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20 views

How can I make the HeaderBar invisible in an app?

I am learning to make apps for Elementary OS. I have a question, how do I make the HeaderBar invisible? I mean how I can I make an app like Planner by Alainm. As you can see in the picture, the ...
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1answer
51 views

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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1answer
74 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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7 views

Developer Portal: Internal error while running

I am trying to get my application into review but the bot fails to run my app and all it does is tell me "Internal error while running". This is extremely frustrating because I have no idea ...
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1answer
19 views

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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34 views

How to use Math in Vala

I can't seem to get Math.floor to work in my code. I have glib-2.0 installed and tried linking it in the build statement. This is what happens when I build my app: /usr/bin/ld: /tmp/cc4KsgDT.o: ...
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1answer
48 views

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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1answer
67 views

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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2answers
24 views

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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1answer
40 views

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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1answer
324 views

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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1answer
56 views

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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1answer
57 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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1answer
101 views

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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0answers
20 views

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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2answers
97 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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1answer
663 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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1answer
316 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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0answers
15 views

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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2answers
117 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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2answers
487 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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3answers
859 views

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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2answers
157 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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1answer
43 views

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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1answer
974 views

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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2answers
175 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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1answer
189 views

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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2answers
493 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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0answers
41 views

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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2answers
114 views

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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1answer
159 views

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 ...
4
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1answer
131 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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1answer
394 views

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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5answers
2k 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 ...
2
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1answer
133 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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1answer
137 views

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 ...
2
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1answer
973 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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1answer
199 views

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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1answer
74 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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2answers
95 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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1answer
40 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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1answer
58 views

In which thing OS is developed/written?

If it is another OS then how was the first OS made?
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1answer
263 views

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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2answers
59 views

Workflow for testing bug fixes

After reading through all of the documentation with regard to getting started in developing for elementary OS, I am still a little unclear on how one actually tests their code for bug fixes. As an ...