I really like the simplicity of this workflow by StreakyCobra on HN (explained as a blog post here):

I use:

git init --bare $HOME/.myconf
alias config='/usr/bin/git --git-dir=$HOME/.myconf/ --work-tree=$HOME'
config config status.showUntrackedFiles no

where my ~/.myconf directory is a git bare repository. Then any file within the home folder can be versioned with normal commands like:

config status
config add .vimrc
config commit -m "Add vimrc"
config add .config/redshift.conf
config commit -m "Add redshift config"
config push
And so one…

No extra tooling, no symlinks, files are tracked on a version control system, you can use different branches for different computers, you can replicate you configuration easily on new installation.

Man that was some solid engagement!