OMG sooo mannyyyyyyy hardcoded FHS paths https://github.com/ubuntu-mate/mate-tweak/blob/927b2ede5ec2042238f6da229e60a14ee7c124cf/mate-tweak, I have no idea to figure out if things will work properly. It for sure won't ever be hermetic outside having the mate desktop enabled in NixOS.

I tested it on a VM, and most of the settings work, except the panel layout.
Also, when it asks for the user's password, it asks it 5 to 10 times.
There are optional dependencies, but as I'm still not great at packaging, I decided to not bother with them.

I tested it on a VM, and most of the settings work, except the panel layout.
Also, when it asks for the user's password, it asks it 5 to 10 times.
There are optional dependencies, but as I'm still not great at packaging, I decided to not bother with them.

When it asks for user password, is it trying to get elevated privileges to modify the system?
That as much should be prevented on NixOS.

Yes, it does.

There is no longer usr in any of the output files.

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@worldofpeace Can we get this in?

@mkg20001 I can check in on #85955 (comment)

Still crashes with

(mate-tweak:29513): GLib-GIO-ERROR **: 17:41:44.100: Settings schema 'org.mate.session.required-components' is not installed

in a pure environment. Can we add mate-session to buildInputs?

@worldofpeace I can't reproduce this behaviour. I added mate-session-manager hoping it will solve this problem.

@luc65r if you're testing on mate than usually the required files are provided via env variables inherited from the session, if you're testing on non-mate that's no longer the case so they're missing

@mkg20001 I tried on mate in a VM, and on i3wm where I believe I have nothing installed that is related to mate.
Anyway, I don't see why someone who is not using mate would use mate-tweak.

@luc65r Ok, then it's a mystery.

nixOS ppl aren't fans of implicit dependencies, everything has to be explicit. that's mostly why.

@mkg20001 I tried on mate in a VM, and on i3wm where I believe I have nothing installed that is related to mate.
Anyway, I don't see why someone who is not using mate would use mate-tweak.

It's not to cater to people not using mate, it is simply improper packaging as @mkg20001 mentioned. In nixos we don't have FHS /usr so gsettings-schemas are not installed globally. If you don't add the packages that have them in buildInputs for wrapGAppsHook everything will be broken.

I've actually just investigated why this happens, https://github.com/ubuntu-mate/mate-tweak/blob/f001d41fca81d80a5b9ca27a113696634a16c290/mate-tweak#L992, I'm using plank so I trigger this code. Several other places need this key so we need to add it to buildInputs. I would check if other code is needing a schema that isn't in buildInputs by checking self.get_string( in the code.