Siril is currently available as binaries only for the released packages like 0.9.4.
Debian
The binary package is available on Debian testing and unstable. It should be installed via repositories, in root privileges:
apt-get install siril
Ubuntu & Linux Mint
Official repositories
sudo apt-get install siril
PPA repositories
On Ubuntu 16.04 and Linux Mint 18.X, for a newer version that the one provided on official repositories, there is a PPA:
sudo add-apt-repository ppa:lock042/siril sudo apt-get update sudo apt-get install siril
For other operating systems, please use the source method below. Windows is completely unsupported. If you can, consider making an installation process or a package for your operating system.