cpufrequtils: perform minimal Makefile substitution & use makeFlags

Also, use multiple outputs

pkgs/by-name/cp/cpufrequtils/package.nix

@@ -15,18 +15,35 @@ stdenv.mkDerivation rec {
     hash = "sha256-AFOgcYPQaUg70GJhS8YcuAgMV32mHN9+ExsGThoa8Yg=";
   };
 
-  patchPhase = ''
-    sed -e "s@= /usr/bin/@= @g" \
-      -e "s@/usr/@$out/@" \
-      -i Makefile
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace-fail /usr/bin/install install
   '';
 
+  makeFlags = [
+    "bindir=$(out)/bin"
+    "sbindir=$(out)/sbin"
+    "mandir=$(man)/man"
+    "includedir=$(dev)/include"
+    "libdir=$(lib)/lib"
+    "localedir=$(out)/share/locale"
+    "docdir=$(man)/share/doc/packages/cpufrequtils"
+    "confdir=$(out)/etc/"
+  ];
+
   buildInputs = [
     stdenv.cc.libc.linuxHeaders
     libtool
     gettext
   ];
 
+  outputs = [
+    "out"
+    "lib"
+    "dev"
+    "man"
+  ];
+
   meta = {
     description = "Tools to display or change the CPU governor settings";
     homepage = "http://ftp.be.debian.org/pub/linux/utils/kernel/cpufreq/cpufrequtils.html";