Insync 3.0 is a full rewrite with a different feature set than the
existing v1 derivation in nixpkgs. Some users need to stick with the
old version, particularly those on headless/non-GUI systems. There is
a headless version of v3, but that will need to be packaged separately.
###### Motivation for this change
Update to latest upstream version
###### Things done
* [ ] Tested using sandboxing ([nix.useSandbox](http://nixos.org/nixos/manual/options.html#opt-nix.useSandbox) on NixOS, or option `sandbox` in [`nix.conf`](http://nixos.org/nix/manual/#sec-conf-file) on non-NixOS linux)
* Built on platform(s)
* [x] NixOS
* [ ] macOS
* [ ] other Linux distributions
* [ ] Tested via one or more NixOS test(s) if existing and applicable for the change (look inside [nixos/tests](https://github.com/NixOS/nixpkgs/blob/master/nixos/tests))
* [ ] Tested compilation of all pkgs that depend on this change using `nix-shell -p nix-review --run "nix-review wip"`
* [x] Tested execution of all binary files (usually in `./result/bin/`)
* [ ] Determined the impact on package closure size (by running `nix path-info -S` before and after)
* [ ] Ensured that relevant documentation is up to date
* [x] Fits [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/.github/CONTRIBUTING.md).
###### Notify maintainers
cc @blitz @Ma27 @tfc @worldofpeace
I forgot that string comparison isn't enough because e.g.:
>>> "89.0.4389.9" < "89.0.4389.23"
False
distutils.version.LooseVersion is undocumented but it works and is
already available so why not use it:
>>> LooseVersion("89.0.4389.9") < LooseVersion("89.0.4389.23")
True
The expression should check if the actually used nginx package
needes write+execute rights, not the default pkgs.nginx (which
has no modules unless overridden in an overlay).
Having MemoryDenyWriteExecute always true causes e.g. the Lua
module to fail (because JIT compilation).
Define systemd-socket activation using the upstream configuration
files as a reference. The "rsyncd" systemd unit has been renamed
to "rsync" for consistency with upstream.
Kirill Elagin