Couple of things were updated to make this work.
1. webkitgtk24x-gtk3 that is marked unsafe has been replaced with
webkitgtk (2.20.*) as astroid has recently indicated that [>= 2.20
is
acceptable](48ce7e3010)
2. protobuf built input was added to satisfy requirements
3. astroid was not functional at all without proper icons so gnome3.defaultIconTheme
were added to buildInputs
4. By default, astroid will use `gvim` as a setting for the embedded
editor, however that didn't work well with nixpkgs. vim is now
bundled with astroid by default. This setting can be overridden
by the user in astroid's config file.
* pkgs: refactor needless quoting of homepage meta attribute
A lot of packages are needlessly quoting the homepage meta attribute
(about 1400, 22%), this commit refactors all of those instances.
* pkgs: Fixing some links that were wrongfully unquoted in the previous
commit
* Fixed some instances
Upgraded astroid to 0.8 and uses the upstream changes to properly
propagate environment without a patch. Note that this still uses an
unsupported version of webkitgtk and thus will fail to build, but if
allow webkitgtk to install, astroid will run.
Astroid was unable to run in a pure environment because it couldn't find
the necessary icons. This fixes that issue, and was tested with
`nix-shell --pure`
