slock: Avoid chmod u+s (#26600)

sifmelcara · Mic92 · commit 6ed463b0585b · 2017-06-22T16:30:10.000+01:00
(cherry picked from commit 722d61c)
diff --git a/pkgs/misc/screensavers/slock/default.nix b/pkgs/misc/screensavers/slock/default.nix
@@ -7,6 +7,7 @@ stdenv.mkDerivation rec {
   };
   buildInputs = [ xproto libX11 libXext libXrandr ];
   installFlags = "DESTDIR=\${out} PREFIX=";
+  patchPhase = "sed -i '/chmod u+s/d' Makefile";
   meta = with stdenv.lib; {
     homepage = http://tools.suckless.org/slock;
     description = "Simple X display locker";
