Hassle-free installation of scala-REPL on Ubuntu 18.04 LTS. This hasn't been tested on other versions. #scala #deb #freeze #hold

install_scala_REPL.md

Remove existing version, if any

sudo apt-get remove scala-library scala

Change version, if necessary: e.g. 2.11.12

sudo wget www.scala-lang.org/files/archive/scala-2.11.8.deb

Install the .deb file

sudo dpkg -i scala-2.11.8.deb

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Hold installed package from system-update

# sudo apt-mark hold <package-name>
sudo apt-mark hold scala

Show all packages on hold

sudo apt-mark showhold

Remove the hold

# sudo apt-mark unhold <package-name>
sudo apt-mark unhold scala