I have been using this solarized theme for many years now: https://github.com/sellout/emacs-color-theme-solarized. This theme used to be available in the MELPA repos, but it is no longer available there.
I always run emacs in my terminal with
emacs -nw and I am currently using
GNU Emacs 27.2.
My problem is that I am currently moving to a fresh linux install, and want to continue to use this theme. What is the "correct" way to install this package manually?