Add Mark Lord's symlinks utility

pkgs/tools/system/symlinks/default.nix

@@ -0,0 +1,27 @@
+{ fetchurl, stdenv }:
+
+stdenv.mkDerivation rec {
+  name = "symlinks-${version}";
+  version = "1.4";
+
+  src = fetchurl {
+    url = "http://www.ibiblio.org/pub/Linux/utils/file/${name}.tar.gz";
+    sha256 = "1683psyi8jwq6anhnkwwyaf7pfksf19v04fignd6vi52s2fnifxh";
+  };
+
+  installPhase = ''
+    mkdir -p $out/bin
+    mkdir -p $out/share/man
+    cp symlinks $out/bin/
+    cp symlinks.8 $out/share/man/
+  '';
+
+  # No license is mentioned in the code but
+  # http://www.ibiblio.org/pub/Linux/utils/file/symlinks.lsm
+  # and other package managers list it as
+  # "(c) Mark Lord, freely distributable"
+  meta = with stdenv.lib; {
+    description = "A symbolic link maintenance utility";
+    maintainers = [ maintainers.goibhniu ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -9652,6 +9652,8 @@ let
     gpgSupport = true;
   };
 
+  symlinks = callPackage ../tools/system/symlinks { };
+
   syncthing = callPackage ../applications/networking/syncthing { };
 
   # linux only by now