Nix-Nada: Reproducible Environment with nix

Usage: Initial project setup

$ mkdir project
$ cd project
$ nix-init
$ direnv allow

# creates: .envrc, default.nix, shell.nix, nixpkgs/default.nix

Usage: Pinning remote repositories

# Update the pinned nix packages
$ nix-pinup nixpkgs/default.nix`

# Configure alternative remotes
$ nix-pinning nixos-unstable > nixpkgs/nixos.nix

One-time (system) Installation

1. Install 'nix'
2. Install & Configure 'direnv'
3. Install 'nix-pinning'

$ curl https://nixos.org/nix/install | sh

$ nix-env -iA direnv
$ echo 'eval "$(direnv hook zsh)"' > ~/.zshrc

$ nix-env -f ./default.nix -iA nix-pinning

Additional helpful nix commands

• nix repl ./default.nix (interactively exploring the packages)
• nix search "query" (find derivation mathing query)
• nix search -u -f ./default.nix jdk (query jdk in locally pinned repo)
• nix-shell --pure (shell env with only declared dependencies)
• nix-env -f ./default.nix -iA attributeName (global installation)