diff --git a/pkgs/servers/x11/xorg/default.nix b/pkgs/servers/x11/xorg/default.nix
index 085048ae68dc..932372d2b3dc 100644
--- a/pkgs/servers/x11/xorg/default.nix
+++ b/pkgs/servers/x11/xorg/default.nix
@@ -1344,6 +1344,21 @@ lib.makeScope newScope (self: with self; {
     meta.platforms = lib.platforms.unix;
   }) {};
 
+  # THIS IS A GENERATED FILE.  DO NOT EDIT!
+  libxcvt = callPackage ({ stdenv, pkg-config, fetchurl, meson, ninja }: stdenv.mkDerivation {
+    pname = "libxcvt";
+    version = "0.1.1";
+    builder = ./builder.sh;
+    src = fetchurl {
+      url = "mirror://xorg/individual/lib/libxcvt-0.1.1.tar.xz";
+      sha256 = "0acc7vrj5kfb19zvyl7f29rnsvx383dvwc19k70r8prm1lccxsr7";
+    };
+    hardeningDisable = [ "bindnow" "relro" ];
+    nativeBuildInputs = [ pkg-config meson ninja ];
+    buildInputs = [ ];
+    meta.platforms = lib.platforms.unix;
+  }) {};
+
   # THIS IS A GENERATED FILE.  DO NOT EDIT!
   libxkbfile = callPackage ({ stdenv, pkg-config, fetchurl, xorgproto, libX11 }: stdenv.mkDerivation {
     pname = "libxkbfile";
diff --git a/pkgs/servers/x11/xorg/generate-expr-from-tarballs.pl b/pkgs/servers/x11/xorg/generate-expr-from-tarballs.pl
index 62873ceda482..bd81f7fa513b 100755
--- a/pkgs/servers/x11/xorg/generate-expr-from-tarballs.pl
+++ b/pkgs/servers/x11/xorg/generate-expr-from-tarballs.pl
@@ -23,7 +23,7 @@ my %pcMap;
 my %extraAttrs;
 
 
-my @missingPCs = ("fontconfig", "libdrm", "libXaw", "zlib", "perl", "python3", "mkfontscale", "bdftopcf", "libxslt", "openssl", "gperf", "m4", "libinput", "libevdev", "mtdev", "xorgproto", "cairo", "gettext" );
+my @missingPCs = ("fontconfig", "libdrm", "libXaw", "zlib", "perl", "python3", "mkfontscale", "bdftopcf", "libxslt", "openssl", "gperf", "m4", "libinput", "libevdev", "mtdev", "xorgproto", "cairo", "gettext", "meson", "ninja" );
 $pcMap{$_} = $_ foreach @missingPCs;
 $pcMap{"freetype2"} = "freetype";
 $pcMap{"libpng12"} = "libpng";
@@ -229,6 +229,7 @@ while (<>) {
 
     push @nativeRequires, "gettext" if $file =~ /USE_GETTEXT/;
     push @requires, "libxslt" if $pkg =~ /libxcb/;
+    push @nativeRequires, "meson", "ninja" if $pkg =~ /libxcvt/;
     push @nativeRequires, "m4" if $pkg =~ /xcbutil/;
     push @requires, "gperf", "xorgproto" if $pkg =~ /xcbutil/;
 
diff --git a/pkgs/servers/x11/xorg/tarballs.list b/pkgs/servers/x11/xorg/tarballs.list
index 75503b3a7395..96a5ac712f46 100644
--- a/pkgs/servers/x11/xorg/tarballs.list
+++ b/pkgs/servers/x11/xorg/tarballs.list
@@ -181,6 +181,7 @@ mirror://xorg/individual/lib/libXaw3d-1.6.3.tar.bz2
 mirror://xorg/individual/lib/libxcb-1.14.tar.xz
 mirror://xorg/individual/lib/libXcomposite-0.4.5.tar.bz2
 mirror://xorg/individual/lib/libXcursor-1.2.0.tar.bz2
+mirror://xorg/individual/lib/libxcvt-0.1.1.tar.xz
 mirror://xorg/individual/lib/libXdamage-1.1.5.tar.bz2
 mirror://xorg/individual/lib/libXdmcp-1.1.3.tar.bz2
 mirror://xorg/individual/lib/libXext-1.3.4.tar.bz2