Hi there,
cider-linux-debian_x64.deb, after downloading this and while installing
sudo dpkg -i ~/Downloads/cider-linux-debian_x64.deb
dpkg: warning: downgrading cider from 2.4.1 to 1.0.0
(Reading database ... 287793 files and directories currently installed.)
Preparing to unpack .../cider-linux-debian_x64.deb ...
Unpacking cider (1.0.0) over (2.4.1) ...
Setting up cider (1.0.0) ...