ad-hoc.md

Listing installed packages

nix-env -q

Listing available packages

nix-env -qaP

Installing packages

nix-env -iA nixpkgs.gitFull

Removing packages

nix-env -e git

(It's best you copy paste the name, which you got from nix-env -q)

Updating packages

First update your channel

nix-channel --update

See what's available

nix-env -qc

Update everything

nix-env -u --keep-going --leq

Show dependencies

nix-store --query --references\
  $(nix-instantiate '<nixpkgs>' -A emacs)