title: pkg-config version of sdl2 is too low
body: <p>I'm currently trying to get SDL2 for Haskell to work on Ubuntu but while trying to install SDL2 with cabal I get the following error</p>
  
  <pre><code>cabal: The pkg-config package sdl2 version &gt;=2.0.3 is required but the version
  installed on the system is version 2.0.2
  Failed to install sdl2-1.2.0
  cabal: Error: some packages failed to install:
  sdl2-1.2.0 failed during the configure step. The exception was:
  ExitFailure 1
  </code></pre>
  
  <p>So it seems I do have pkg-config and I do have sdl2 but I seem to have downloaded the wrong version of libsdl-dev? I have the latest version, so is there a way for me to upgrade the pkg-config file?</p>