Stable Release

INDI Library is available for Raspbian Buster. To install stable INDI Library, run the following commands:

wget -O - https://www.astroberry.io/repo/key | sudo apt-key add -
sudo su -c "echo 'deb https://www.astroberry.io/repo/ buster main' > /etc/apt/sources.list.d/astroberry.list"
sudo apt update

After update is complete, you can install INDI and optionally Ekos:

1. To Install INDI Library including all 3rd party drivers:

   sudo apt install indi-full gsc

2. To install latest Ekos:

   sudo apt install indi-full kstars-bleeding

3. To install only INDI Library with basic drivers:

   sudo apt install libindi1 indi-bin

Common Errors

If you receive an error about some package trying to overwrite another, try this:

sudo apt-get -o Dpkg::Options::="--force-overwrite" -f install

Latest INDI & KStars are available for Arch Linux & Derivatives like Manjero & Antegros.

1. Install INDI & KStars

sudo pacman -Syu
sudo pacman -S --needed kstars breeze-icons yaourt binutils patch cmake make libraw libindi gpsd gcc
yaourt -Sya --noconfirm libindi_3rdparty

2. Astrometry.net

yaourt -Sya sextractor-bin
yaourt -Sya astrometry.net

Determine what Index files you require and then download them. Or you can use KStars to download them for you.

wget broiler.astrometry.net/~dstn/4100/index-4107.fits
wget broiler.astrometry.net/~dstn/4100/index-4108.fits
wget broiler.astrometry.net/~dstn/4100/index-4109.fits
sudo mv index-410[789].fits /usr/share/astrometry/data

Small update. I have an official devel project now, so please do not put the above outdated info on the website :)
The new official repos are:

openSUSE Leap 15.3 (stable version):

sudo zypper ar -f https://download.opensuse.org/repositories/Application:/Astrophotography/15.3/ Astrophotography_Software

openSUSE Leap 15.4 (beta version):

sudo zypper ar -f https://download.opensuse.org/repositories/Application:/Astrophotography/15.4/ Astrophotography_Software

openSUSE Tumbleweed (rolling release):

sudo zypper ar -f https://download.opensuse.org/repositories/Application:/Astrophotography/openSUSE_Tumbleweed/ Astrophotography_Software