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Nah, I'm not talking about bluetooth mirrors.
Mirrors are what powers all distros: they're a (de)centralized solution for downloading pre-compiled binaries and scripts for your operating system.
I like always having the most current version of packages, so I usually update my system several times a day. When, after a day, I tried updating and pacman reported my system being up to date, I was pretty weirded out.
Another day passed, and the system was still up to date. It was not a connection problem, I was connecting to my mirrors and they were reporting absolutely zero updates for my system.
At the third day of stagnation, I was sure something was up. I looked up the Mirror Status page on ArchLinux's website and saw that loads of mirrors were out of sync.
I had never touched my mirrorlist before, it was just generated by the archinstall script a few months ago; a lot of Arch-based distros by default ship tools to update your mirrorlist, but I honestly thought I'd never need that.
Pacman's mirrorlist is located in `/etc/pacman.d/mirrorlist`. You can filter out uncommented lines with this command:
grep -v "^#" /etc/pacman.d/mirrorlist
And check the actual status of your mirror(s) on the Mirror Status page.
This will overwrite your mirrorlist, so you're advised to make a backup before proceeding:
sudo cp /etc/pacman.d/mirrorlist /etc/pacman.d/mirrorlist.bak
I decided to use reflector to fix this problem.
I didn't want to have to deal with this again, so I enabled the provided systemd timer.
First, install it.
sudo pacman -S reflector
Then, edit `/etc/xdg/reflector/reflector.conf`. I only needed to edit the `--country` parameter and select countries next to the one where I reside; you can list available countries by running `reflector --list-countries`.
--save /etc/pacman.d/mirrorlist --protocol https --country Italy,Switzerland,France,Germany,Austria --latest 5 --sort age
Finally, start the service and check if it worked.
sudo systemctl start reflector.service cat /etc/pacman.d/mirrorlist
If everything went smoothly, enable reflector's timer so it runs weekly.
sudo systemctl enable reflector.timer
Done!
Now, by default pacman _does_ update its mirrorlist. It creates a file called `mirrorlist.pacnew` and it expects you to pick your favorite mirrors each time its generated. You can disable this (now unneeded) behavior by uncommenting and setting `NoExtract` in `/etc/pacman.conf`:
... NoExtract = /etc/pacman.d/mirrorlist # Misc options Color ILoveCandy ParallelDownloads = 3 ...