Adds scripts and README

README.md

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+# Nix + Home Manager based MacBook configuration
+
+This is the [Nix] and [Home Manager] configuration for managing my MacBook.
+
+## Usage
+
+First install [Nix]. To install `home-manager` and set up the MacBook as per the config, run:
+
+```bash
+bin/install
+```
+
+To update installed packages, run:
+
+```bash
+bin/update
+```
+
+To cleanup garbage, run:
+
+```bash
+bin/cleanup
+```
+
+[Nix]: https://nixos.org
+[Home Manager]: https://github.com/nix-community/home-manager

bin/cleanup

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+#!/bin/bash
+
+nix-collect-garbage -d --delete-old

bin/install

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+#!/bin/bash
+
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+ROOT_DIR=$( dirname "$SCRIPT_DIR" )
+mkdir -p "$HOME/.config/nixpkgs"
+ln -f -s "$ROOT_DIR/home.nix" "$HOME/.config/nixpkgs/home.nix"
+nix-channel --add https://github.com/nix-community/home-manager/archive/master.tar.gz home-manager
+nix-channel --update
+export NIX_PATH=$HOME/.nix-defexpr/channels:/nix/var/nix/profiles/per-user/root/channels${NIX_PATH:+:$NIX_PATH}
+nix-shell '<home-manager>' -A install

bin/update

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+#!/bin/bash
+
+nix-channel --update
+home-manager switch