I am ok with porting this release-17.03 (as the old service might stop working). However we have the policy to first merge to master and then cherry pick the commits back to the release branch. This particular pull request looks simple enough, that I can do the rebasing and merging in the right order.

Thanks @Mic92 - I think I missed the last point of the "Making Patches" section (could've sworn I got all of them...). I'll do better next time.

Did you test the service before hand? It contained some evaluation errors. You can test services as described here: https://github.com/nixos-users/wiki/wiki/nix-command-cookbook#build-nixos-from-nixpkgs-repo

Nevertheless, I made it work on master. Can you confirm whether it also works on 17.03?

@Mic92 Have tested with nixos-rebuild test -I nixpkgs=/home/cynic/nixpkgs --fast, and seems to work fine on 17.03 with your changes. I can't seem to make it possible to enable/disable per-user, but that's probably my lack of systemd knowledge showing; and it doesn't seem to be a big issue. Thank you.

in other btsync package was an systemd user service, which was overridden in the nixos module. Since this is no longer the case with resilio-sync, I dropped it.