Gathering nix efforts in one repository.

• servo (https://github.com/servo/servo)
• gecko (https://github.com/mozilla/gecko-dev)
• firefox-dev-bin (Firefox Developer Edition <https://www.mozilla.org/en-US/firefox/developer/>)
• VidyoDesktop ()

NOTE: Nix overlays only works on up-to-date versions of NixOS/nixpkgs, starting from 17.03.

A nixpkgs overlay is provided to contains all of the latest rust releases.

To use the rust overlay run the ./rust-overlay-install.sh command. It will link the current ./rust-overlay.nix into you ~/.config/nixpkgs/overlays folders.

Once this is done, use nix-env -iA nixpkgs.rustChannels.nightly.rust for example. Replace the nixpkgs. prefix with nixos. on NixOS.

• setup hydra and have to have binary channels
• make sure pinned revisions get updated automatically (if build passes we should update revisions in default.nix)
• pin to specific (working) nixpkgs revision (as we do for other sources
• servo can currently only be used with nix-shell. its build system tries to dowload quite few things (it is doing pip install and cargo install). it should be possible to replace that with nix
• can we make this work on darwin as well?
• assign maintainers for our packages that will montior that it "always" builds
• hook it with vulnix report to monitor CVEs (once vulnix is ready, it must be ready soon :P)