xen: nuke, move to by-name. (#345192)

.github/labeler.yml

@@ -385,9 +385,11 @@
     - changed-files:
       - any-glob-to-any-file:
         - nixos/modules/virtualisation/xen*
-        - pkgs/applications/virtualization/xen/**
+        - pkgs/by-name/xe/xen/*
+        - pkgs/by-name/qe/qemu_xen/*
         - pkgs/by-name/xe/xen-guest-agent/*
         - pkgs/by-name/xt/xtf/*
+        - pkgs/build-support/xen/*
         - pkgs/development/ocaml-modules/xen*/*
         - pkgs/development/ocaml-modules/vchan/*
 

nixos/doc/manual/release-notes/rl-2411.section.md

@@ -54,12 +54,11 @@
   was added through the `boot.initrd.systemd.dmVerity` option.
 
 - The [Xen Project Hypervisor](https://xenproject.org) is once again available as a virtualisation option under [`virtualisation.xen`](#opt-virtualisation.xen.enable).
-  - This release includes Xen [4.17.5](https://wiki.xenproject.org/wiki/Xen_Project_4.17_Release_Notes), [4.18.3](https://wiki.xenproject.org/wiki/Xen_Project_4.18_Release_Notes) and [4.19.0](https://wiki.xenproject.org/wiki/Xen_Project_4.19_Release_Notes), as well as support for booting the hypervisor on EFI systems.
+  - This release includes Xen [4.19.0](https://wiki.xenproject.org/wiki/Xen_Project_4.19_Release_Notes) and support for booting the hypervisor on EFI systems.
   ::: {.warning}
     Booting into the Xen Project Hypervisor through a legacy BIOS bootloader or with the legacy script-based Stage 1 initrd have been **deprecated**. Only EFI booting and the new systemd-based Stage 1 initrd are supported.
   :::
-  - There are two flavours of Xen available by default: `xen`, which includes all built-in components, and `xen-slim`, which replaces the built-in components with their Nixpkgs equivalents.
-    - The `qemu-xen-traditional` component has been deprecated by the upstream Xen Project, and is no longer available in any of the Xen Project Hypervisor packages.
+  - The `qemu-xen-traditional` component has been deprecated by the upstream Xen Project, and is no longer included in the Xen build.
   - The OCaml-based Xen Store can now be configured using  [`virtualisation.xen.store.settings`](#opt-virtualisation.xen.store.settings).
   - The `virtualisation.xen.bridge` options have been deprecated in this release cycle. Users who need network bridges are encouraged to set up their own networking configurations.