nix: 2.5.1 -> 2.6.0

pkgs/tools/package-management/nix/default.nix

@@ -229,7 +229,7 @@ in rec {
 
   nix = nixStable;
 
-  nixStable = nix_2_5;
+  nixStable = nix_2_6;
 
   nix_2_3 = callPackage common (rec {
     pname = "nix";
@@ -280,6 +280,22 @@ in rec {
     inherit storeDir stateDir confDir;
   });
 
+  nix_2_6 = callPackage common (rec {
+    pname = "nix";
+    version = "2.6.0";
+
+    src = fetchFromGitHub {
+      owner = "NixOS";
+      repo = "nix";
+      rev = version;
+      sha256 = "sha256-xEPeMcNJVOeZtoN+d+aRwolpW8mFSEQx76HTRdlhPhg=";
+    };
+
+    boehmgc = boehmgc_nix;
+
+    inherit storeDir stateDir confDir;
+  });
+
   nixUnstable = lib.lowPrio (callPackage common rec {
     pname = "nix";
     version = "2.6${suffix}";

pkgs/top-level/all-packages.nix

@@ -33091,6 +33091,7 @@ with pkgs;
     nix_2_3
     nix_2_4
     nix_2_5
+    nix_2_6
     nixUnstable;
 
   nixStatic = pkgsStatic.nix;