commit 6f1338e307f917638869b56fa1c2536d6ec2843b · pyrox.dev/nixpkgs

nixos/doc/manual/release-notes/rl-2505.section.md

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         - Overriding Wayland compositor is possible using `enableWaylandSession` option, but you might need to take care [`xfce4-session`](https://gitlab.xfce.org/xfce/xfce4-session/-/merge_requests/49), [`dbus-update-activation-environment`](https://github.com/labwc/labwc/blob/eaf11face68ee1f1bcc7ce1498304ca8c108c8ba/src/config/session.c#L234) and [`systemctl --user import-environment`](https://github.com/labwc/labwc/blob/eaf11face68ee1f1bcc7ce1498304ca8c108c8ba/src/config/session.c#L239) on startup.

     

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         - For new Xfce installations, default panel layout has [changed](https://gitlab.xfce.org/xfce/xfce4-panel/-/merge_requests/158/diffs) to not include external panel plugins by default. You can still add them yourself using the "Panel Preferences" dialog.

     

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       - [`system.stateVersion`](#opt-system.stateVersion) is now validated and must be in the `"YY.MM"` format, ideally corresponding to a prior NixOS release.

     

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       - GOverlay has been updated to 1.2, please check the [upstream changelog](https://github.com/benjamimgois/goverlay/releases) for more details.

     

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       - [`services.mongodb`](#opt-services.mongodb.enable) is now compatible with the `mongodb-ce` binary package. To make use of it, set [`services.mongodb.package`](#opt-services.mongodb.package) to `pkgs.mongodb-ce`.

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nixos/modules/misc/version.nix

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           toLower

     

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           optionalString

     

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           literalExpression

     

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           match

     

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           mkRenamedOptionModule

     

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           mkDefault

     

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           mkOption

     
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         };

     

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         config = {

     

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           assertions = [

     

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             {

     

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               assertion = match "[0-9]{2}\\.[0-9]{2}" config.system.stateVersion != null;

     

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               message = ''

     

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                 ${config.system.stateVersion} is an invalid value for 'system.stateVersion'; it must be in the format "YY.MM",

     

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                 which corresponds to a prior release of NixOS.

     

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                 If you want to switch releases or switch to unstable, you should change your channel and/or flake input URLs only.

     

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                 *DO NOT* touch the 'system.stateVersion' option, as it will not help you upgrade.

     

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                 Leave it exactly on the previous value, which is likely the value you had for it when you installed your system.

     

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                 If you're unsure which value to set it to, use "${

     

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                   if match "[0-9]{2}\\.[0-9]{2}" options.system.stateVersion.default != null then

     

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                     options.system.stateVersion.default

     

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                   else

     

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                     options.system.nixos.release.default

     

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                 }" as a default.

     

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               '';

     

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             }

     

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           ];

     

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           system.nixos = {

     

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             # These defaults are set here rather than up there so that