They also have a website with docs: https://nixmultiverse.com/docs/

The website can also be used to search for specific package versions in nixpkgs, to get the nixpkgs revision: https://nixmultiverse.com/

The above feature is similar to: https://lazamar.co.uk/nix-versions/ or https://www.nixhub.io/ , but using this project is a way easier alternative than searching for an pinning revisions.

 

According to the archwiki article on a swapfile on btrfs: https://wiki.archlinux.org/title/Btrfs#Swap_file

Tip: Consider creating the subvolume directly below the top-level subvolume, e.g. @swap. Then, make sure the subvolume is mounted to /swap (or any other accessible location).

But... why? I've been researching for a bit now, and I still don't understand the benefit of a subvolume directly below the top level subvolume, as opposed to a nested subvolume.

At first I thought this might be because nested subvolumes are included in snapshots, but that doesn't seem to be the case, according to a reddit post... but I can't find anything about this on the arch wiki, gentoo wiki, or the btrfs readthedocs page.

Any ideas? I feel like the tip wouldn't just be there just because.

I put my solution as a comment so people who sort by new comments see the update.

 

It was fairly easy. I used rustic to back up my entire home directory to a USB flash drive.

The trick is to ensure that all applications (except KDE) are closed. Firefox, for example, really hates if you try to actively sync or copy over it's profile directories while it is running.

And then I also nuked my podman user data. (podman system reset). Podman sometimes makes the ownership of it's files weird, but also the container images take up a lot of space that I don't really care about actually backing up. It's okay if those aren't on the new laptop.

Then I backed up to the usb flash drive:

rustic init -r /path/to/repo — this will prompt you for a password

rustic backup -r /path/to/repo /home/moonpie

One cool thing about the backups is that they are deduplicated and compressed. So I backed up 120 gb of data, but it was compressed to 80 gb.

restic snapshots -r /path/to/repo

The snapshots are deduplicated as well. Data that doesn't change between snapshot versions, doesn't take up any extra space.

rustic restore -r /path/to/repo snapshotid /

The / is needed because rustic restores to paths underneath the thing. It gave me a bunch of permission errors about not being able to read stuff not in my home directory, but eventually it restored all of my data.

And then yeah. All my data. Except Wifi passwords, which I had stored as unencrypted for all users, because I didn't like having to unlock the KDE wallet to get to Wifi passwords when connecting. I had (and have) LUKS encryption so I didn't worry about that too much. But it means that data not in my home directory was not copied over.

It was surprisingly smooth, and now I have all my data and firefox profiles and stuff on the new machine.

 

As usual, phoronix is full of trolls. I was surprised to see only 17 comments, but perhaps that's because I viewed this very early. A highlight from the first page:

Everyday we stray further from GNU, POSIX, C, X11 and now SysVinit. 80s are over. Party is over. Wake up. It's 2026. Adapt or perish in irrelevance. Future is bright and is inevitable. Long live systemd, Wayland, Rust, Gnome and atomic and immutable distros.

Given the way this covers Systemd, SysV, and AI agents, and the way that I see trolling on the first page, There is a very real chance this could be one of those legendary Phoronix threads that manages to hit the 500 comment limit.

EDIT: more relevant threads: https://www.phoronix.com/linux/systemd

 

cross-posted from: https://programming.dev/post/45725210

I noticed in a fairly recent version of KDE, my computer would pretend to be a bluetooth sink when connected to devices like my phone.

This is a really cool feature, and I really like it, because it lets me stream audio from my phone to my computer with no fuss.

However, there is an annoying glitch where the stream stops all of a sudden. The phone keeps playing the music, but I can't hear anything. I've noticed that this seems to have something to do with CPU usage, like when I switch windows rapidly or do something that requires CPU the bluetooth process is dropped. The only reliable way to fix it is to disconnect and reconnect, or wait a minute, and then it works again. Is there any way to fix this more persistently?

I am using CachyOS + KDE right now.

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