Migrate to WebKit2 API

[k0ral]

The current constraint pkgconfig-depends: webkitgtk-3.0 >= 1.8 corresponds to a WebKit1 API, which has been removed from the WebKitGTK+ release since the 2.6.* series.
I realize this is probably a significant change, and I would be glad to help this transition, so please let me know if/how I can contribute.

[erikkaplun]

It would be very nice to have WebKit2 API support, that way we could build against Homebrew's webkitgtk-2.10.4 formula not the old webkitgtk-2.4.9 which is currently only in available MacPorts (but I'm working on a Homebrew webkitgtk24-2.4.9 formula as we speak).

[erikkaplun]

@k0ral by the way, I'm not 100% sure, but I think webkitgtk3 does not compile against anything newer than webkitgtk-2.4.9 regardless of WebKit API version — see my comments in #13: webkitgtk3 requires webkit/webkitversion.h but that doesn't seem to be available on anything newer than webkitgtk-2.4.9; but I'd love to be corrected.

[jorsn]

@eallik @k0ral webkit/webkitversion.h is part of the WebKit1 API and is only for this reason not available on webkitgtk versions newer than 2.4.9. So the problem is the API version.

[Mikolaj]

I wonder if https://hackage.haskell.org/package/gi-webkit helps us in any way here?

[k0ral]

Among the gi-* family of generated bindings, there are actually 2 packages for webkitgtk: gi-webkit and gi-webkit2, which I assume are bindings for Webkit1 and WebKit2 APIs, respectively.
I guess efforts are being diverted to those new bindings, so it might not be worth keeping this issue opened.

[hamishmack]

Using the gi-webkit2 package is the way to go for WebKit2 support.