libxcb-keysyms: refactor, move to pkgs/by-name and rename from xorg.xcbutilkeysyms

relevant changes:
- remove m4 from nativeBuildInputs and gperf from buildInputs, as they
both don't seem to be required

pkgs/by-name/li/libxcb-keysyms/package.nix

···
+{
+  lib,
+  stdenv,
+  fetchurl,
+  pkg-config,
+  libxcb,
+  xorgproto,
+  writeScript,
+  testers,
+}:
+stdenv.mkDerivation (finalAttrs: {
+  pname = "libxcb-keysyms";
+  version = "0.4.1";
+
+  outputs = [
+    "out"
+    "dev"
+  ];
+
+  src = fetchurl {
+    url = "mirror://xorg/individual/xcb/xcb-util-keysyms-${finalAttrs.version}.tar.xz";
+    hash = "sha256-fCYKUpRBKu1CnfHaL4r9O9B7fLo/7HcvuhWmE6bVxjg=";
+  };
+
+  strictDeps = true;
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [
+    libxcb
+    xorgproto
+  ];
+
+  propagatedBuildInputs = [ libxcb ];
+
+  passthru = {
+    updateScript = writeScript "update-${finalAttrs.pname}" ''
+      #!/usr/bin/env nix-shell
+      #!nix-shell -i bash -p common-updater-scripts
+      version="$(list-directory-versions --pname xcb-util-keysyms \
+        --url https://xorg.freedesktop.org/releases/individual/lib/ \
+        | sort -V | tail -n1)"
+      update-source-version ${finalAttrs.pname} "$version"
+    '';
+    tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
+  };
+
+  meta = {
+    description = "Standard X key constants and conversion to/from keycodes";
+    homepage = "https://gitlab.freedesktop.org/xorg/lib/libxcb-keysyms";
+    license = lib.licenses.x11;
+    maintainers = [ ];
+    pkgConfigModules = [ "xcb-keysyms" ];
+    platforms = lib.platforms.unix;
+  };
+})

pkgs/servers/x11/xorg/default.nix

···
   libxcb,
   libxcb-errors,
   libxcb-image,
+  libxcb-keysyms,
   libxcb-util,
   libxcvt,
   libxcursor,
···
   xcbproto = xcb-proto;
   xcbutilerrors = libxcb-errors;
   xcbutilimage = libxcb-image;
+  xcbutilkeysyms = libxcb-keysyms;
   xcbutil = libxcb-util;
   xkeyboardconfig = xkeyboard-config;
   xorgcffiles = xorg-cf-files;
···
       passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
       meta = {
         pkgConfigModules = [ "xcb-cursor" ];
-        platforms = lib.platforms.unix;
-      };
-    })
-  ) { };
-
-  # THIS IS A GENERATED FILE.  DO NOT EDIT!
-  xcbutilkeysyms = callPackage (
-    {
-      stdenv,
-      pkg-config,
-      fetchurl,
-      gperf,
-      libxcb,
-      xorgproto,
-      m4,
-      testers,
-    }:
-    stdenv.mkDerivation (finalAttrs: {
-      pname = "xcb-util-keysyms";
-      version = "0.4.1";
-      builder = ./builder.sh;
-      src = fetchurl {
-        url = "mirror://xorg/individual/xcb/xcb-util-keysyms-0.4.1.tar.xz";
-        sha256 = "0f66snk179hmp8ppgv1zp9y7pl1vzn52znpikm1fsaj1ji90l9kw";
-      };
-      hardeningDisable = [
-        "bindnow"
-        "relro"
-      ];
-      strictDeps = true;
-      nativeBuildInputs = [
-        pkg-config
-        m4
-      ];
-      buildInputs = [
-        gperf
-        libxcb
-        xorgproto
-      ];
-      passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
-      meta = {
-        pkgConfigModules = [ "xcb-keysyms" ];
         platforms = lib.platforms.unix;
       };
     })

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

···
 $pcMap{"xcb-errors"} = "xcbutilerrors";
 $pcMap{"xcb-event"} = "xcbutil";
 $pcMap{"xcb-image"} = "xcbutilimage";
+$pcMap{"xcb-keysyms"} = "xcbutilkeysyms";
 $pcMap{"xcb-proto"} = "xcbproto";
 $pcMap{"xcb-util"} = "xcbutil";
 $pcMap{"xcursor"} = "libXcursor";
···
   libxcb,
   libxcb-errors,
   libxcb-image,
+  libxcb-keysyms,
   libxcb-util,
   libxcvt,
   libxcursor,
···
   xcbproto = xcb-proto;
   xcbutilerrors = libxcb-errors;
   xcbutilimage = libxcb-image;
+  xcbutilkeysyms = libxcb-keysyms;
   xcbutil = libxcb-util;
   xkeyboardconfig = xkeyboard-config;
   xorgcffiles = xorg-cf-files;

pkgs/servers/x11/xorg/overrides.nix

···
     };
   });
 
-  xcbutilkeysyms = super.xcbutilkeysyms.overrideAttrs (attrs: {
-    outputs = [
-      "out"
-      "dev"
-    ]; # mainly to get rid of propagating others
-  });
-
   xcbutilrenderutil = super.xcbutilrenderutil.overrideAttrs (attrs: {
     outputs = [
       "out"

pkgs/servers/x11/xorg/tarballs.list

···
-mirror://xorg/individual/xcb/xcb-util-keysyms-0.4.1.tar.xz
 mirror://xorg/individual/xcb/xcb-util-renderutil-0.3.10.tar.xz
 mirror://xorg/individual/xcb/xcb-util-wm-0.4.2.tar.xz
 mirror://xorg/individual/app/appres-1.0.7.tar.xz