iptables{,-legacy}: migrate to by-name (#512129)

pkgs/by-name/ip/iptables-legacy/package.nix

@@ -0,0 +1,11 @@
+{
+  iptables,
+  ...
+}@args:
+
+(iptables.override (
+  {
+    nftablesCompat = false;
+  }
+  // removeAttrs args [ "iptables" ]
+))

pkgs/by-name/ip/iptables/package.nix

@@ -29,19 +29,15 @@
   iputils,
 }:
 
-let
-  version = "1.8.13";
-  pname = "iptables";
-in
-
 stdenv.mkDerivation (finalAttrs: {
-  inherit pname version;
+  pname = "iptables";
+  version = "1.8.13";
 
   __structuredAttrs = true;
 
   src = fetchurl {
-    url = "https://www.netfilter.org/projects/${pname}/files/${pname}-${version}.tar.xz";
-    sha256 = "GvzTPano+ROs5qISZ4gWLiB+JvXV4pxlc8Dlgf/Fi5k=";
+    url = "https://www.netfilter.org/projects/iptables/files/iptables-${finalAttrs.version}.tar.xz";
+    hash = "sha256-GvzTPano+ROs5qISZ4gWLiB+JvXV4pxlc8Dlgf/Fi5k=";
   };
 
   outputs = [

pkgs/top-level/all-packages.nix

@@ -8444,8 +8444,6 @@ with pkgs;
   iputils = hiPrio (callPackage ../os-specific/linux/iputils { });
   # hiPrio for collisions with inetutils (ping)
 
-  iptables = callPackage ../os-specific/linux/iptables { };
-  iptables-legacy = callPackage ../os-specific/linux/iptables { nftablesCompat = false; };
   iptables-nftables-compat = iptables;
 
   jool-cli = callPackage ../os-specific/linux/jool/cli.nix { };