Notes on using the Nix Package Manager under OS X

gistfile1.sh

# Nuke Homebrew :)
sudo rm -rf /opt/homebrew-cask
brew list | xargs brew uninstall --force
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"
 
# Install Nix
curl https://nixos.org/nix/install | sh  # :dance:
 
# Add the following lines at the end of your ~/.bash_profile, ~/.zshrc...
if [ -e /Users/$USER/.nix-profile/etc/profile.d/nix.sh ];
  then . /Users/$USER/.nix-profile/etc/profile.d/nix.sh;
fi
export PATH="$PATH:/Users/$USER/.nix-profile/bin"
 
# Update Nix. Make sure to run this after installing...
nix-channel --update
 
# Now everything is ready!
# Some quick tips:
 
# Query for a package (git for example)
nix-env -qaP | grep git
 
# Install a package
nix-env -i git
 
# Go back to a previous generation
nix-env --list-generations
nix-env --switch-generation $NUMBER
 
# Quick rollback (revert to previous generation)
nix-env --rollback
 
# List installed packages
nix-env -q
 
# Update packages
nix-env -uA git curl emacs ...
nix-env -u  # updates all
 
# Uninstalling packages
nix-env -e git-2.5.3
 
# Remove unuxed packages, etc.
nix-collect-garbage -d