When installing something a little large from Android Studio SDK Manager, it stops in the middle of the installation process and shows "Not enough space on device" error. The available space on the partition Solus is working in is more than 100 GB, so its not the main space that is the problem.
Tried adding line:
tmpfs /tmp tmpfs nodev,nosuid,size=4G 0 0
to /etc/fstab and rebooted, still the same problem.