Add a recipe for installing "watch" from procps (#2227)

pkgs/os-specific/linux/procps/watch.nix

@@ -0,0 +1,29 @@
+{ stdenv, fetchurl, ncurses }:
+
+stdenv.mkDerivation {
+  name = "watch-0.2.0";
+
+  src = fetchurl {
+    url = http://procps.sourceforge.net/procps-3.2.8.tar.gz;
+    sha256 = "0d8mki0q4yamnkk4533kx8mc0jd879573srxhg6r2fs3lkc6iv8i";
+  };
+
+  buildInputs = [ ncurses ];
+
+  makeFlags = "watch usrbin_execdir=$(out)/bin" +
+              (if stdenv.isDarwin then " PKG_LDFLAGS=" else "");
+
+  enableParallelBuilding = true;
+
+  crossAttrs = {
+    CC = stdenv.cross.config + "-gcc";
+  };
+
+  installPhase = "mkdir $out; mkdir -p $out/bin; cp -p watch $out/bin";
+
+  meta = {
+    homepage = http://sourceforge.net/projects/procps/;
+    description = "Utility for watch the output of a given command at intervals";
+    platforms = stdenv.lib.platforms.unix;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -7221,6 +7221,8 @@ let
 
   procps-ng = callPackage ../os-specific/linux/procps-ng { };
 
+  watch = callPackage ../os-specific/linux/procps/watch.nix { };
+
   qemu_kvm = lowPrio (qemu.override { x86Only = true; });
 
   firmwareLinuxNonfree = callPackage ../os-specific/linux/firmware/firmware-linux-nonfree { };