# Nix Package Manager

## Managing packages

```bash
nix-env -iA nixpkgs.<packagename>
```

# NixOS

## Updating a Flake based system

```bash
sudo nix update --flake /etc/nixos
sudo nixos-rebuild switch
```

## Updating a non-Flake based system

```bash
sudo nixos-rebuild switch
```

You can use `boot` instead of `switch` for the system to boot into the new generation on reboot instead.

# Contributing to nixpkgs

## Updating packages that you maintain

```bash
git checkout -b bump-mypkg
nix-shell -p nix-update --run 'nix-update <pkg> --commit'
nix-build -A <pkg> # ensure it builds
git push <fork> bump-mypkg
```