systemtap-unwrapped: extract from linuxPackages

This doesn't depend on a kernel version, and it's depended on by other
tools that don't depend on a kernel version. They shouldn't have to
reach into linuxPackages for an arbitrary kernel version to get it.

pkgs/by-name/sy/systemtap-unwrapped/package.nix

···
+{
+  lib,
+  stdenv,
+  fetchgit,
+  pkg-config,
+  gettext,
+  cpio,
+  elfutils,
+  python3,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "systemtap";
+  version = "5.2";
+
+  src = fetchgit {
+    url = "git://sourceware.org/git/systemtap.git";
+    rev = "release-${finalAttrs.version}";
+    hash = "sha256-SUPNarZW8vdK9hQaI2kU+rfKWIPiXB4BvJvRNC1T9tU=";
+  };
+
+  nativeBuildInputs = [
+    pkg-config
+    cpio
+    python3
+    python3.pkgs.setuptools
+  ];
+  buildInputs = [
+    elfutils
+    gettext
+    python3
+  ];
+  enableParallelBuilding = true;
+
+  meta = {
+    homepage = "https://sourceware.org/systemtap/";
+    description = "Provides a scripting language for instrumentation on a live kernel plus user-space";
+    license = lib.licenses.gpl2;
+    platforms = lib.systems.inspect.patterns.isGnu;
+  };
+})

pkgs/development/tools/profiling/systemtap/default.nix

···
 {
   lib,
-  fetchgit,
-  pkg-config,
-  gettext,
   runCommand,
   makeWrapper,
-  cpio,
+  systemtap-unwrapped,
   elfutils,
   kernel,
   gnumake,
···
 }:
 
 let
-  ## fetchgit info
-  url = "git://sourceware.org/git/systemtap.git";
-  rev = "release-${version}";
-  hash = "sha256-SUPNarZW8vdK9hQaI2kU+rfKWIPiXB4BvJvRNC1T9tU=";
-  version = "5.2";
-
   inherit (kernel) stdenv;
 
-  ## stap binaries
-  stapBuild = stdenv.mkDerivation {
-    pname = "systemtap";
-    inherit version;
-    src = fetchgit { inherit url rev hash; };
-    nativeBuildInputs = [
-      pkg-config
-      cpio
-      python3
-      python3.pkgs.setuptools
-    ];
-    buildInputs = [
-      elfutils
-      gettext
-      python3
-    ];
-    enableParallelBuilding = true;
-  };
-
   ## symlink farm for --sysroot flag
   sysroot = runCommand "systemtap-sysroot-${kernel.version}" { } ''
     mkdir -p $out/boot $out/usr/lib/debug
···
   pypkgs = with python3.pkgs; makePythonPath [ pyparsing ];
 
 in
-runCommand "systemtap-${version}"
+runCommand "systemtap-${systemtap-unwrapped.version}"
   {
-    inherit stapBuild;
+    stapBuild = systemtap-unwrapped;
     nativeBuildInputs = [ makeWrapper ];
     passthru.tests = { inherit (nixosTests.systemtap) linux_default linux_latest; };
-    meta = {
-      homepage = "https://sourceware.org/systemtap/";
-      description = "Provides a scripting language for instrumentation on a live kernel plus user-space";
-      license = lib.licenses.gpl2;
-      platforms = lib.systems.inspect.patterns.isGnu;
-    };
+    inherit (systemtap-unwrapped) meta;
   }
   (
     ''

pkgs/os-specific/linux/kernel/perf/default.nix

···
   libpfm,
   libtraceevent,
   openssl,
-  systemtap,
+  systemtap-unwrapped,
   numactl,
   zlib,
   babeltrace,
···
         libopcodes_2_38
       ]
   )
-  ++ lib.optional (lib.meta.availableOn stdenv.hostPlatform systemtap) systemtap.stapBuild
+  ++ lib.optional (lib.meta.availableOn stdenv.hostPlatform systemtap-unwrapped) systemtap-unwrapped
   ++ lib.optional withGtk gtk2
   ++ lib.optional withZstd zstd
   ++ lib.optional withLibcap libcap