46 lines
1.1 KiB
Nix
46 lines
1.1 KiB
Nix
# This module generates the nixos-checkout script, which replaces the
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# NixOS and Nixpkgs source trees in /etc/nixos/{nixos,nixpkgs} with
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# Subversion checkouts.
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{config, pkgs, ...}:
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with pkgs.lib;
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let
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nixosCheckout = pkgs.substituteAll {
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name = "nixos-checkout";
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dir = "bin";
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isExecutable = true;
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src = pkgs.writeScript "nixos-checkout"
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''
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cd /etc/nixos
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# Move any old nixos or nixpkgs directories out of the way.
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backupTimestamp=$(date "+%Y%m%d%H%M%S")
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if test -e nixos -a ! -e nixos/.svn; then
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mv nixos nixos-$backupTimestamp
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fi
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if test -e nixpkgs -a ! -e nixpkgs/.svn; then
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mv nixpkgs nixpkgs-$backupTimestamp
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fi
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# Check out the NixOS and Nixpkgs sources.
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${pkgs.subversion}/bin/svn co https://svn.nixos.org/repos/nix/nixos/trunk nixos
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${pkgs.subversion}/bin/svn co https://svn.nixos.org/repos/nix/nixpkgs/trunk nixpkgs
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'';
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};
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in
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{
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environment.systemPackages =
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[ nixosCheckout
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# Since the checkout script depends on Subversion, we may as
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# well put it in $PATH.
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pkgs.subversion
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];
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}
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