smem: Add package

This is a memory reporting tool that accounts for shared memory.

pkgs/os-specific/linux/smem/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchurl, python }:
+
+stdenv.mkDerivation rec {
+  name = "smem-1.4";
+
+  src = fetchurl {
+    url = "http://www.selenic.com/smem/download/${name}.tar.gz";
+    sha256 = "1v31vy23s7szl6vdrllq9zbg58bp36jf5xy3fikjfg6gyiwgia9f";
+  };
+
+  buildInputs = [ python ];
+
+  buildPhase =
+    ''
+      gcc -O2 smemcap.c -o smemcap
+    '';
+
+  installPhase =
+    ''
+      mkdir -p $out/bin
+      cp smem smemcap $out/bin/
+
+      mkdir -p $out/share/man/man8
+      cp smem.8 $out/share/man/man8/
+    '';
+
+  meta = {
+    homepage = http://www.selenic.com/smem/;
+    description = "A memory usage reporting tool that takes shared memory into account";
+    platforms = lib.platforms.linux;
+    maintainers = [ lib.maintainers.eelco ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -7918,6 +7918,8 @@ let
 
   shadow = callPackage ../os-specific/linux/shadow { };
 
+  smem = callPackage ../os-specific/linux/smem { };
+
   statifier = builderDefsPackage (import ../os-specific/linux/statifier) { };
 
   sysdig = callPackage ../os-specific/linux/sysdig {