···

       
17
       
17
       
 
       


     

       
18
       
18
       
 
       
- `nixos-option` has been rewritten to a Nix expression called by a simple bash script. This lowers our maintenance threshold, makes eval errors less verbose, adds support for flake-based configurations, descending into `attrsOf` and `listOf` submodule options, and `--show-trace`.

     

       
19
       
19
       
 
       


     

       
20
       
20
       
+
       
- The packaging of Mesa graphics drivers has been significantly reworked, in particular:

     

       
21
       
21
       
+
       
  - applications linked against different Mesa versions than installed on the system should now work correctly going forward (however, applications  against older Mesa, e.g. from Nixpkgs releases before 25.05, remain broken)

     

       
22
       
22
       
+
       
  - the global Mesa version can now be managed without a mass rebuild by setting `hardware.graphics.package`

     

       
23
       
23
       
+
       
  - packages that used to depend on Mesa for libgbm or libdri should use `libgbm` or `dri-pkgconfig-stub` as inputs, respectively

     

       
24
       
24
       
+
       


     

       
20
       
25
       
 
       
- The `intel` video driver for X.org (from the xf86-video-intel package) which was previously removed because it was non-functional has been fixed and the driver has been re-introduced.

     

       
21
       
26
       
 
       


     

       
22
       
27
       
 
       
- The Mattermost module ({option}`services.mattermost`) and packages (`mattermost` and `mmctl`) have been substantially updated: