libxkbcommon_7: drop

Not used anymore in nixpkgs and affected by a bunch of security issues:
CVE-2018-15853, CVE-2018-15857, CVE-2018-15858, CVE-2018-15859, CVE-2018-15861,
CVE-2018-15862 and CVE-2018-15863.

pkgs/development/libraries/libxkbcommon/libxkbcommon_7.nix

···
-{ lib, stdenv, fetchurl, pkg-config, bison, flex, xkeyboard_config, libxcb, libX11 }:
-
-stdenv.mkDerivation rec {
-  pname = "libxkbcommon";
-  version = "0.7.2";
-
-  src = fetchurl {
-    url = "http://xkbcommon.org/download/libxkbcommon-${version}.tar.xz";
-    sha256 = "1n5rv5n210kjnkyrvbh04gfwaa7zrmzy1393p8nyqfw66lkxr918";
-  };
-
-  outputs = [ "out" "dev" ];
-
-  nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ bison flex xkeyboard_config libxcb ];
-
-  configureFlags = [
-    "--with-xkb-config-root=${xkeyboard_config}/etc/X11/xkb"
-    "--with-x-locale-root=${libX11.out}/share/X11/locale"
-  ];
-
-  env.NIX_CFLAGS_COMPILE = toString [
-    # Needed with GCC 12
-    "-Wno-error=array-bounds"
-  ];
-
-  preBuild = lib.optionalString stdenv.isDarwin ''
-    sed -i 's/,--version-script=.*$//' Makefile
-  '';
-
-  meta = with lib; {
-    description = "A library to handle keyboard descriptions";
-    homepage = "https://xkbcommon.org";
-    license = licenses.mit;
-    maintainers = with maintainers; [ ttuegel ];
-    mainProgram = "xkbcli";
-    platforms = with platforms; unix;
-  };
-}

pkgs/top-level/aliases.nix

···
   libwnck3 = libwnck;
   libyamlcpp = yaml-cpp; # Added 2023-01-29
   libyamlcpp_0_3 = yaml-cpp_0_3; # Added 2023-01-29
+  libxkbcommon_7 = throw "libxkbcommon_7 has been removed because it is impacted by security issues and not used in nixpkgs, move to 'libxkbcommon'"; # Added 2023-01-03
   lightdm_gtk_greeter = lightdm-gtk-greeter; # Added 2022-08-01
   llama = walk; # Added 2023-01-23
 

pkgs/top-level/all-packages.nix

···
 
   libxkbcommon = libxkbcommon_8;
   libxkbcommon_8 = callPackage ../development/libraries/libxkbcommon { };
-  libxkbcommon_7 = callPackage ../development/libraries/libxkbcommon/libxkbcommon_7.nix { };
 
   libxklavier = callPackage ../development/libraries/libxklavier { };