Arch Linux support

[AladW]

As you will see, I've handled things differently for Arch. The main script is much smaller as some duties are handed to pacman and systemd:

• Port/IP/cache: systemd - caveat: check failures manually
• Installation: pacman - caveat: users can break it with the --nodeps flag
• chattr/resolvconf: pacman post/pre install script

Some additional changes to the systemd configs:

• Port 2053 (soltysiak, opennic JP) didn't work, so I've switched to 53
• Added PartOf= to backup so that restarting the main service restarts both

Known issues:

• The backup service will complain if it finds no secondary IP (best solution is add the missing addresses).
• Daemon-reload loads at installation the new (user) services. Existing Dnscrypt instances still run, but may fail if restarted without the new matching configs. Hopefully "curl &&" is enough.

Conclusion: While Arch may be simple, systemd is absolutely not!

[AladW]

If you don't mind I can also upload this to https://aur.archlinux.org/

[strasharo]

That would be great. :)

[AladW]

https://aur.archlinux.org/packages/dnscrypt-autoinstall/

Let me know how it works for you. :)

[AladW]

Right after a few days of use I did get the config problem I predicted. So a default dnscrypt-config should be included.

[simonclausen]

I really appreciate the effort you are putting into this. Great job - I am sure a lot of people are very happy for the effort you have put into improving what started off as a simple script.

I must also apologize for the lack of help I am able to give at this moment. I have very little spare time at the moment.

[AladW]

No problem - thank you for providing a great dnscrypt service!