libxcvt: refactor and move to pkgs/by-name from xorg namespace

pkgs/by-name/li/libxcvt/package.nix

···
+{
+  lib,
+  stdenv,
+  fetchurl,
+  pkg-config,
+  meson,
+  ninja,
+  writeScript,
+}:
+stdenv.mkDerivation (finalAttrs: {
+  pname = "libxcvt";
+  version = "0.1.3";
+
+  src = fetchurl {
+    url = "mirror://xorg/individual/lib/libxcvt-${finalAttrs.version}.tar.xz";
+    hash = "sha256-qSmZiodn3n36NtbaR1HNvu807WMHFPL0p2ezUfJELgE=";
+  };
+
+  strictDeps = true;
+
+  nativeBuildInputs = [
+    pkg-config
+    meson
+    ninja
+  ];
+
+  passthru = {
+    updateScript = writeScript "update-${finalAttrs.pname}" ''
+      #!/usr/bin/env nix-shell
+      #!nix-shell -i bash -p common-updater-scripts
+      version="$(list-directory-versions --pname ${finalAttrs.pname} \
+        --url https://xorg.freedesktop.org/releases/individual/lib/ \
+        | sort -V | tail -n1)"
+      update-source-version ${finalAttrs.pname} "$version"
+    '';
+  };
+
+  meta = {
+    description = "VESA CVT standard timing modeline generation library & utility";
+    homepage = "https://gitlab.freedesktop.org/xorg/lib/libxcvt";
+    license = with lib.licenses; [
+      mit
+      hpndSellVariant
+    ];
+    mainProgram = "cvt";
+    maintainers = [ ];
+    platforms = lib.platforms.unix;
+    badPlatforms = [ lib.systems.inspect.platformPatterns.isStatic ];
+  };
+})

pkgs/servers/x11/xorg/default.nix

···
   gccmakedep,
   libpciaccess,
   libpthread-stubs,
+  libxcvt,
   luit,
   pixman,
 }:
···
   inherit
     gccmakedep
     libpciaccess
+    libxcvt
     luit
     pixman
     ;
···
           "xcb-xv"
           "xcb-xvmc"
         ];
-        platforms = lib.platforms.unix;
-      };
-    })
-  ) { };
-
-  # THIS IS A GENERATED FILE.  DO NOT EDIT!
-  libxcvt = callPackage (
-    {
-      stdenv,
-      pkg-config,
-      fetchurl,
-      meson,
-      ninja,
-      testers,
-    }:
-    stdenv.mkDerivation (finalAttrs: {
-      pname = "libxcvt";
-      version = "0.1.3";
-      builder = ./builder.sh;
-      src = fetchurl {
-        url = "mirror://xorg/individual/lib/libxcvt-0.1.3.tar.xz";
-        sha256 = "009f8kr53cv7lzsg4507cgnk9vxyrm8lgnnn6vx7vpk7hy59jad9";
-      };
-      hardeningDisable = [
-        "bindnow"
-        "relro"
-      ];
-      strictDeps = true;
-      nativeBuildInputs = [
-        pkg-config
-        meson
-        ninja
-      ];
-      buildInputs = [ ];
-      passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
-      meta = {
-        pkgConfigModules = [ ];
         platforms = lib.platforms.unix;
       };
     })

pkgs/servers/x11/xorg/generate-expr-from-tarballs.pl

···
   gccmakedep,
   libpciaccess,
   libpthread-stubs,
+  libxcvt,
   luit,
   pixman,
 }:
···
   inherit
     gccmakedep
     libpciaccess
+    libxcvt
     luit
     pixman
     ;

pkgs/servers/x11/xorg/overrides.nix

···
     };
   });
 
-  libxcvt = super.libxcvt.overrideAttrs (
-    {
-      meta ? { },
-      ...
-    }:
-    {
-      meta = meta // {
-        homepage = "https://gitlab.freedesktop.org/xorg/lib/libxcvt";
-        mainProgram = "cvt";
-        badPlatforms = meta.badPlatforms or [ ] ++ [
-          lib.systems.inspect.platformPatterns.isStatic
-        ];
-      };
-    }
-  );
-
   libX11 = super.libX11.overrideAttrs (attrs: {
     outputs = [
       "out"

pkgs/servers/x11/xorg/tarballs.list

···
 mirror://xorg/individual/lib/libxcb-1.17.0.tar.xz
 mirror://xorg/individual/lib/libXcomposite-0.4.6.tar.xz
 mirror://xorg/individual/lib/libXcursor-1.2.3.tar.xz
-mirror://xorg/individual/lib/libxcvt-0.1.3.tar.xz
 mirror://xorg/individual/lib/libXdamage-1.1.6.tar.xz
 mirror://xorg/individual/lib/libXdmcp-1.1.5.tar.xz
 mirror://xorg/individual/lib/libXext-1.3.6.tar.xz