gdb: Add source-highlight dependency.

pkgs/development/tools/misc/gdb/default.nix

@@ -4,7 +4,7 @@
 , fetchurl, pkg-config, perl, texinfo, setupDebugInfoDirs, buildPackages
 
 # Run time
-, ncurses, readline, gmp, mpfr, expat, libipt, zlib, dejagnu
+, ncurses, readline, gmp, mpfr, expat, libipt, zlib, dejagnu, sourceHighlight
 
 , pythonSupport ? stdenv.hostPlatform == stdenv.buildPlatform && !stdenv.hostPlatform.isCygwin, python3 ? null
 , guile ? null
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config texinfo perl setupDebugInfoDirs ];
 
-  buildInputs = [ ncurses readline gmp mpfr expat libipt zlib guile ]
+  buildInputs = [ ncurses readline gmp mpfr expat libipt zlib guile sourceHighlight ]
     ++ lib.optional pythonSupport python3
     ++ lib.optional doCheck dejagnu;