Hi all!

I want to use GLFW-b ( http://hackage.haskell.org/packages/archive/GLFW-b/0.1.0.2/doc/html/Graphics-UI-GLFW.html ) and I wrote this:
initWindow = do
True <- GLFW.initialize
print =<< GLFW.openGLProfile
    print =<< GLFW.getGlfwVersion
    print =<< GLFW.getGlVersion
    print "Trying to open the window"
    result <- GLFW.openWindow GLFW.defaultDisplayOptions
    print result

And got this:
DefaultProfile
Version {versionBranch = [2,7,2], versionTags = []}
Version {versionBranch = [-1867951663,39789305,39789305], versionTags = []}
"Trying to open the window"
False

Why do I always get random numbers as GLVersion?
How can I detect incompatibility preventing me from opening a window?

Thanks in advance