pyrox.dev
1# This module generates the nixos-checkout script, which performs a
2# checkout of the Nixpkgs Git repository.
3
4{ config, lib, pkgs, ... }:
5
6with lib;
7
8let
9
10 nixosCheckout = pkgs.substituteAll {
11 name = "nixos-checkout";
12 dir = "bin";
13 isExecutable = true;
14 src = pkgs.writeScript "nixos-checkout"
15 ''
16 #! ${pkgs.stdenv.shell} -e
17
18 if [ "$1" == "-h" ] || [ "$1" == "--help" ]; then
19 echo "Usage: `basename $0` [PREFIX]. See NixOS Manual for more info."
20 exit 0
21 fi
22
23 prefix="$1"
24 if [ -z "$prefix" ]; then prefix=/etc/nixos; fi
25 mkdir -p "$prefix"
26 cd "$prefix"
27
28 if [ -z "$(type -P git)" ]; then
29 echo "installing Git..."
30 nix-env -iA nixos.git
31 fi
32
33 # Move any old nixpkgs directories out of the way.
34 backupTimestamp=$(date "+%Y%m%d%H%M%S")
35
36 if [ -e nixpkgs -a ! -e nixpkgs/.git ]; then
37 mv nixpkgs nixpkgs-$backupTimestamp
38 fi
39
40 # Check out the Nixpkgs sources.
41 if ! [ -e nixpkgs/.git ]; then
42 echo "Creating repository in $prefix/nixpkgs..."
43 git init --quiet nixpkgs
44 else
45 echo "Updating repository in $prefix/nixpkgs..."
46 fi
47 cd nixpkgs
48 git remote add origin git://github.com/NixOS/nixpkgs.git || true
49 git remote add channels git://github.com/NixOS/nixpkgs-channels.git || true
50 git remote set-url origin --push git@github.com:NixOS/nixpkgs.git
51 git remote update
52 git checkout master
53 '';
54 };
55
56in
57
58{
59 environment.systemPackages = [ nixosCheckout ];
60}