stockholm/krebs/3modules/apt-cacher-ng.nix

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{ config, pkgs, lib, ... }:
with lib;
let
acng-config = pkgs.writeTextFile {
name = "acng-configuration";
destination = "/acng.conf";
text = ''
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ForeGround: 1
CacheDir: ${cfg.cacheDir}
LogDir: ${cfg.logDir}
PidFile: /var/run/apt-cacher-ng.pid
ExTreshold: ${toString cfg.cacheExpiration}
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CAfile: ${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt
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Port: ${toString cfg.port}
BindAddress: ${cfg.bindAddress}
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# defaults:
Remap-debrep: file:deb_mirror*.gz /debian ; file:backends_debian
Remap-uburep: file:ubuntu_mirrors /ubuntu ; file:backends_ubuntu
Remap-debvol: file:debvol_mirror*.gz /debian-volatile ; file:backends_debvol
Remap-cygwin: file:cygwin_mirrors /cygwin
Remap-sfnet: file:sfnet_mirrors
Remap-alxrep: file:archlx_mirrors /archlinux
Remap-fedora: file:fedora_mirrors
Remap-epel: file:epel_mirrors
Remap-slrep: file:sl_mirrors # Scientific Linux
Remap-gentoo: file:gentoo_mirrors.gz /gentoo ; file:backends_gentoo
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ReportPage: acng-report.html
SupportDir: ${pkgs.apt-cacher-ng}/lib/apt-cacher-ng
LocalDirs: acng-doc ${pkgs.apt-cacher-ng}/share/doc/apt-cacher-ng
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# Nix cache
${optionalString cfg.enableNixCache ''
Remap-nix: http://cache.nixos.org /nixos ; https://cache.nixos.org
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PfilePatternEx: (^|.*?/).*\.nar(info)?(|\.gz|\.xz|\.bz2)$
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VfilePatternEx: (^|.*?/)nix-cache-info$
''}
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${cfg.extraConfig}
'';
};
acng-home = "/var/cache/acng";
cfg = config.krebs.apt-cacher-ng;
api = {
enable = mkEnableOption "apt-cacher-ng";
cacheDir = mkOption {
default = acng-home + "/cache";
type = types.str;
description = ''
Path to apt-cacher-ng cache directory.
Will be created and chowned to acng-user
'';
};
logDir = mkOption {
default = acng-home + "/log";
type = types.str;
description = ''
Path to apt-cacher-ng log directory.
Will be created and chowned to acng-user
'';
};
port = mkOption {
default = 3142;
type = types.int;
description = ''
port of apt-cacher-ng
'';
};
bindAddress = mkOption {
default = "";
type = types.str;
example = "localhost 192.168.7.254 publicNameOnMainInterface";
description = ''
listen address of apt-cacher-ng. Defaults to every interface.
'';
};
cacheExpiration = mkOption {
default = 4;
type = types.int;
description = ''
number of days before packages expire in the cache without being
requested.
'';
};
enableNixCache = mkOption {
default = true;
type = types.bool;
description = ''
enable cache.nixos.org caching via PfilePatternEx and VfilePatternEx.
to use the apt-cacher-ng in your nixos configuration:
nix.binary-cache = [ http://acng-host:port/nixos ];
These options cannot be used in extraConfig, use SVfilePattern and
SPfilePattern or disable this option.
'';
};
extraConfig = mkOption {
default = "";
type = types.lines;
description = ''
extra config appended to the generated acng.conf
'';
};
};
imp = {
users.extraUsers.acng = {
# uid = config.ids.uids.acng;
uid = 897955083; #genid Reaktor
description = "apt-cacher-ng";
home = acng-home;
createHome = false;
};
users.extraGroups.acng = {
gid = 897955083; #genid Reaktor
# gid = config.ids.gids.Reaktor;
};
systemd.services.apt-cacher-ng = {
description = "apt-cacher-ng";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
PermissionsStartOnly = true;
ExecStartPre = pkgs.writeScript "acng-init" ''
#!/bin/sh
mkdir -p ${shell.escape cfg.cacheDir} ${shell.escape cfg.logDir}
chown acng:acng ${shell.escape cfg.cacheDir} ${shell.escape cfg.logDir}
'';
ExecStart = "${pkgs.apt-cacher-ng}/bin/apt-cacher-ng -c ${acng-config}";
PrivateTmp = "true";
User = "acng";
Restart = "always";
RestartSec = "10";
};
};
};
in
{
options.krebs.apt-cacher-ng = api;
config = mkIf cfg.enable imp;
}