hyprland-wiki/pages/Contributing and Debugging/_index.md
2024-03-17 18:40:41 +02:00

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---
weight: 12
title: Contributing and Debugging
---
# Contributing guidelines
PR, code styling and code FAQs are [here](./PR-Guidelines)
For issues, please see
[the guidelines](https://github.com/hyprwm/Hyprland/blob/main/docs/ISSUE_GUIDELINES.md)
## Build in debug mode
### Required packages
`xcb` stuff, check with your local package provider.
`wayland` - of course.
_Arch_:
`yay -S gdb ninja gcc cmake libxcb xcb-proto xcb-util xcb-util-keysyms libxfixes libx11 libxcomposite xorg-xinput libxrender pixman wayland-protocols cairo pango seatd tomlplusplus`
(If any are missing hmu)
### Recommended, CMake
Install the VSCode C/C++ and CMake Tools extensions and use that.
I've attached a
[example/launch.json](https://github.com/hyprwm/Hyprland/blob/main/example/launch.json)
that you can copy to your .vscode/ folder in the repo root.
With that, you can build in debug, go to the debugging tab and hit
`(gdb) Launch`.
### Custom, CLI
`make debug`
attach and profile in your preferred way.
### Meson
```console
meson setup build -Dbuildtype=debug
ninja -C build
```
### Nix
To build the package in debug mode, you have to override it like this:
```nix
hyprland.override {
debug = true;
};
```
This code can go in the `package` attribute of the NixOS/Home Manager modules.
## Running
when running Hyprland in Debug mode, the config is
`~/.config/hypr/hyprlandd.conf` and the logs can be found at
`/tmp/hypr/[INSTANCE SIGNATURE]/hyprlandd.log`.
## Logs, dumps, etc
You can use the logs and the GDB debugger, but running Hyprland in debug compile
as a driver and using it for a while might give more insight to the more random
bugs.
When Hyprland crashes, use `coredumpctl` and then `coredumpctl info PID` to see
the dump. See the instructions below for more info about `coredumpctl`.
You can also use the amazing command
```sh
watch -n 0.1 "grep -v \"arranged\" /tmp/hypr/$HYPRLAND_INSTANCE_SIGNATURE/hyprland.log | tail -n 40"
```
for live logs. (replace `hyprland` with `hyprlandd` for debug builds)
### How do I get a coredump?
See
[`ISSUE_GUIDELINES.md`](https://github.com/hyprwm/Hyprland/blob/main/docs/ISSUE_GUIDELINES.md).
## Nesting Hyprland
Hyprland can run nested in a window. For that, make sure you did the following:
- built in debug
- removed ALL `exec=` and `exec-once=` keywords from your debug config
(`hyprlandd.conf`)
- set a resolution for `WL-1` and are not using `preferred`
- made sure no keybinds overlap (use a different mod for your keybinds
altogether)
Once you launch, the display might be cropped. This can be fixed by setting the
resolution for `WL-1` to the exact dimensions of the window as reported by
`hyprctl clients`.