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https://github.com/NixOS/nixpkgs.git
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66 lines
1.3 KiB
Nix
66 lines
1.3 KiB
Nix
# Produce a script to generate /etc.
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{ config, pkgs, ... }:
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with pkgs.lib;
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###### interface
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let
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option = {
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environment.etc = mkOption {
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default = [];
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example = [
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{ source = "/nix/store/.../etc/dir/file.conf.example";
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target = "dir/file.conf";
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mode = "0440";
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}
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];
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description = ''
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List of files that have to be linked in /etc.
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'';
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};
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};
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in
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###### implementation
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let
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copyScript = {source, target, mode ? "644", own ? "root.root"}:
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assert target != "nixos";
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''
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source="${source}"
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target="/etc/${target}"
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mkdir -p $(dirname "$target")
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test -e "$target" && rm -f "$target"
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cp "$source" "$target"
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chown ${own} "$target"
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chmod ${mode} "$target"
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'';
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etc = pkgs.stdenv.mkDerivation {
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name = "etc";
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builder = ./make-etc.sh;
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/* !!! Use toXML. */
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sources = map (x: x.source) config.environment.etc;
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targets = map (x: x.target) config.environment.etc;
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modes = map (x: if x ? mode then x.mode else "symlink") config.environment.etc;
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};
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in
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{
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require = [option];
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system.build.etc = etc;
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system.activationScripts.etc = stringAfter [ "stdio" ]
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''
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# Set up the statically computed bits of /etc.
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echo "setting up /etc..."
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${pkgs.perl}/bin/perl ${./setup-etc.pl} ${etc}/etc
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'';
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}
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