Bump nixpkgs pins, add 22.11 to CI

ci.nix

@@ -13,6 +13,7 @@
   inherit (pkgs.haskell-nix) sources;
   nixpkgsVersions = {
     "R2205" = "nixpkgs-2205";
+    "R2211" = "nixpkgs-2211";
     "unstable" = "nixpkgs-unstable";
   };
   haskellNix = compat { inherit checkMaterialization system; };
@@ -49,12 +50,17 @@
       nixpkgs.lib.optionalAttrs (nixpkgsName == "R2205") {
         ghc865 = false;
         ghc8107 = false;
+      } // nixpkgs.lib.optionalAttrs (nixpkgsName == "R2211") {
+        ghc865 = false;
+        ghc8107 = false;
+        ghc902 = false;
+        ghc925 = false;
+        ghc944 = false;
       } // nixpkgs.lib.optionalAttrs (nixpkgsName == "unstable") {
         ghc865 = false;
         ghc884 = false; # Native version is used to boot 9.0.1
         ghc8107 = true;
         ghc902 = false;
-        ghc924 = false;
         ghc925 = true;
         ghc944 = true;
       }));

default.nix

@@ -2,7 +2,7 @@
 
 let
   pins = (__fromJSON (__readFile ./flake.lock)).nodes;
-  nixpkgsPin = pins.nixpkgs-2205.locked;
+  nixpkgsPin = pins.nixpkgs-2211.locked;
   flakeCompatPin = pins.flake-compat.locked;
   nixpkgsSrc =
     builtins.fetchTarball {

flake.nix

@@ -177,10 +177,6 @@
               ) (names allJobs));
         in {
           latest = allJobs.unstable.ghc8107.native or {};
-          required = legacyPackages.releaseTools.aggregate {
-            name = "required for CI";
-            constituents = builtins.attrValues requiredJobs;
-          };
         } // requiredJobs;
 
       hydraJobs = ciJobs;