Since the Python extensions to Epiphany have been removed from the repository I thought it was high time to start playing with what seems to be the replacement to Python extensions: Seed extensions. The first step is of course to get a version of Epiphany that supports Seed extensions. After a few emails on the mailing list I’ve come to a recipe (I’ve done this twice now on different machines to I’m fairly confident it works). I should probably preface this by saying that I run an up-to-date Arch system, if you run something else you might need to do a bit more, or less if you’re lucky :-)

1. Make sure the following packages are installed ((You might need a few more packages depending on what desktop environment you use. Those were the packages I needed to add to my machine where I run Gnome and do regular non-Gnome development)): libsoup, libwebkit, gnome-common, intltool, libffi
2. Clone the following Git repositories from git.gnome.org: epiphany-extensions, epiphany, seed, gobject-inspection, gnome-js-common, gir-repository

3. Decide on a $prefix, i.e. where you want it all installed (I use ~/opt/gnome-trunk). Then export the following environment variables:

    export PATH=$prefix/bin:$PATH
    export PKG_CONFIG_PATH=$prefix/lib/pkgconfig

4. Then configure, build and install everything. Use the autogen.sh script to create the configuration, and make sure to pass it prefix=$prefix each time. Some of the modules need extra arguments as well. This is the order and extra arguments I used:

   1. gnome-js-common (--disable-seed --disable-gjs)
   2. seed
   3. gnome-js-common (--disable-gjs)
   4. gobject-introspection
   5. gir-repository
   6. epiphany (--enable-introspection --enable-seed)
   7. epiphany-extensions

After that you can put your extensions in ~/.gnome2/epiphany/extensions/. I have two instances of Epiphany installed, a stable from my distro, and the dev version I built myself. I haven’t managed to run them both side by side, but beyond that there seems to be no bad interaction between them.