The Iosevka builder requires Node 8, which is not supported by node2nix yet; the
included package-lock.json is processed in Nix to install the required
dependencies offline.
* 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
1.11.4 contains numerous improvements including ligatures and fixes to
font weights.
I switched "default.nix" from using `fetchFromGitHub` to simply pulling
down the release as a zip via `fetchurl`. This seems like the best
approach given that the repositoriy no longer contains font files and
the alternative would be to build them from scratch.
