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95 lines
3 KiB
Markdown
95 lines
3 KiB
Markdown
---
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weight: 12
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title: Systemd startup
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---
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## UWSM
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- [Universal Wayland Session Manager](https://github.com/Vladimir-csp/uwsm) is a recommended way to start Hyprland session on systemd distros. uwsm wraps standalone Wayland compositors into a set of Systemd units and provides robust session management including environment, XDG autostart support, bi-directional binding with login session, and clean shutdown.
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## Installation
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{{% details title="Arch" closed="true" %}}
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uwsm is available in AUR. You can install it either with an AUR helper, or build PKGBUILD manually. Here's an example for yay.
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```sh
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yay -S uwsm
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```
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{{% /details %}}
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{{% details title="Nix/NixOS" closed="true" %}}
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```nix
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programs.hyprland.withUWSM = true;
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```
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The above option generates a new desktop entry, `hyprland-uwsm.desktop`, which will be available in display managers.
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For more info, read the [option](https://search.nixos.org/options?channel=unstable&show=programs.uwsm.enable&from=0&size=50&sort=relevance&type=packages&query=uwsm).
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{{< callout >}}
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If you use the [Home Manager module](../../Nix/Hyprland-on-Home-Manager), make sure to disable the systemd integration, as it conflicts with uwsm.
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```nix
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wayland.windowManager.hyprland.systemd.enable = false;
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```
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{{< /callout >}}
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{{% /details %}}
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{{< callout type=info >}}
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For instructions for other distros and manual building, see [building and installing](https://github.com/Vladimir-csp/uwsm?tab=readme-ov-file#installation) section on the project's page.
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{{< /callout >}}
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## Launching Hyprland with uwsm
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{{< callout type=info >}}
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Pay attention to the warnings in [Environment variables](../../Configuring/Environment-variables), [Multi-GPU](../../Configuring/Multi-GPU) and [Dispatchers](../../Configuring/Dispatchers) sections.
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{{< /callout >}}
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### In tty
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To launch Hyprland with uwsm, add this code in your shell profile.
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```
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if uwsm check may-start && uwsm select; then
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exec systemd-cat -t uwsm_start uwsm start default
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fi
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```
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This will bring uwsm compositor selection menu after you log in tty1. Choose `Hyprland` entry and you're good to go.
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If you want to bypass compositor selection menu and launch Hyprland directly, use this code in your shell profile, instead.
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```
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if uwsm check may-start; then
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exec uwsm start hyprland.desktop
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fi
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```
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### Using a display manager
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If you use a display manager, choose `hyprland (uwsm-managed)` entry in a display manager selection menu.
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## Launching applications inside session
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The concept of a session managed by Systemd implies also running applications as units. Uwsm [provides](https://github.com/Vladimir-csp/uwsm#3-applications-and-slices) a helper to do it.
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Prefix application startup commands with `uwsm app --`. It also supports launching Desktop Entries by IDs or paths. See `man uwsm` or `uwsm app --help`.
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Examples for autostart and bind entries:
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```
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exec-once = uwsm app -- mycommand --arg1 --arg2
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bind = SUPER, E, exec, uwsm app -- pcmanfm-qt.desktop
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```
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Running applications as child processes inside compositor's unit is discouraged.
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