lisp-modules: use lib.makeSearchPath in shell.nix

pkgs/development/lisp-modules/shell.nix

@@ -10,7 +10,28 @@ self = rec {
     freetds
     lispPackages.quicklisp-to-nix lispPackages.quicklisp-to-nix-system-info
   ];
-  CPATH = "${libfixposix}/include";
-  LD_LIBRARY_PATH = "${openssl.out}/lib:${fuse}/lib:${libuv}/lib:${libev}/lib:${libmysqlclient}/lib:${libmysqlclient}/lib/mysql:${postgresql.lib}/lib:${sqlite.out}/lib:${libfixposix}/lib:${freetds}/lib:${openssl_lib_marked}/lib:${glib.out}/lib:${gdk-pixbuf}/lib:${cairo}/lib:${pango.out}/lib:${gtk3}/lib:${webkitgtk}/lib:${gobject-introspection}/lib";
+  CPATH = lib.makeSearchPath "include"
+    [ libfixposix
+    ];
+  LD_LIBRARY_PATH = lib.makeLibraryPath
+    [ cairo
+      freetds
+      fuse
+      gdk-pixbuf
+      glib
+      gobject-introspection
+      gtk3
+      libev
+      libfixposix
+      libmysqlclient
+      libuv
+      openssl
+      openssl_lib_marked
+      pango
+      postgresql
+      sqlite
+      webkitgtk
+    ]
+    + ":${libmysqlclient}/lib/mysql";
 };
 in stdenv.mkDerivation self