pkgsUnfree: init

doc/release-notes/rl-2511.section.md

@@ -100,6 +100,8 @@
 
 - New hardening flags, `strictflexarrays1` and `strictflexarrays3` were made available, corresponding to the gcc/clang options `-fstrict-flex-arrays=1` and `-fstrict-flex-arrays=3` respectively.
 
+- New package set variant `pkgsUnfree` has the same effect as using `config.allowUnfree = true;`, allowing for pure evaluation of unfree packages, for example: `pkgsUnfree.hello-unfree`.
+
 - `gramps` has been updated to 6.0.0
   Upstream recommends [backing up your Family Trees](https://gramps-project.org/wiki/index.php/Gramps_6.0_Wiki_Manual_-_Manage_Family_Trees#Backing_up_a_Family_Tree) before upgrading.
 

doc/using/configuration.chapter.md

@@ -128,6 +128,12 @@ There are several ways to tweak how Nix handles a package which has been marked
 
 A complete list of licenses can be found in the file `lib/licenses.nix` of the nixpkgs tree.
 
+-   Use the `pkgsUnfree` variant:
+
+    ```ShellSession
+    $ nix-build -A pkgsUnfree.hello-unfree
+    ```
+
 ## Installing insecure packages {#sec-allow-insecure}
 
 There are several ways to tweak how Nix handles a package which has been marked as insecure.

pkgs/top-level/variants.nix

@@ -23,6 +23,14 @@ let
     );
 in
 self: super: {
+
+  # Full package set with unfree packages enabled.
+  pkgsUnfree = nixpkgsFun {
+    config = super.config // {
+      allowUnfree = true;
+    };
+  };
+
   pkgsLLVM = nixpkgsFun {
     overlays = [
       (self': super': {