forked from mirrors/nixpkgs
29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
74 lines
2 KiB
Nix
74 lines
2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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vconsoleConf = pkgs.writeText "vconsole.conf"
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''
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KEYMAP=${config.i18n.consoleKeyMap}
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FONT=${config.i18n.consoleFont}
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'';
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in
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{
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###### interface
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options = {
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# most options are defined in i18n.nix
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# FIXME: still needed?
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boot.extraTTYs = mkOption {
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default = [];
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example = ["tty8" "tty9"];
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description = ''
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Tty (virtual console) devices, in addition to the consoles on
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which mingetty and syslogd run, that must be initialised.
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Only useful if you have some program that you want to run on
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some fixed console. For example, the NixOS installation CD
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opens the manual in a web browser on console 7, so it sets
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<option>boot.extraTTYs</option> to <literal>["tty7"]</literal>.
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'';
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};
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};
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###### implementation
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config = {
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environment.systemPackages = [ pkgs.kbd ];
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# Let systemd-vconsole-setup.service do the work of setting up the
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# virtual consoles. FIXME: trigger a restart of
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# systemd-vconsole-setup.service if /etc/vconsole.conf changes.
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environment.etc."vconsole.conf".source = vconsoleConf;
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# This is identical to the systemd-vconsole-setup.service unit
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# shipped with systemd, except that it uses /dev/tty1 instead of
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# /dev/tty0 to prevent putting the X server in non-raw mode, and
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# it has a restart trigger.
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systemd.services."systemd-vconsole-setup" =
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{ description = "Setup Virtual Console";
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wantedBy = [ "sysinit.target" "multi-user.target" ];
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before = [ "sysinit.target" "shutdown.target" ];
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conflicts = [ "shutdown.target" ];
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unitConfig =
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{ DefaultDependencies = "no";
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ConditionPathExists = "/dev/tty1";
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};
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serviceConfig =
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{ Type = "oneshot";
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RemainAfterExit = true;
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ExecStart = "${config.systemd.package}/lib/systemd/systemd-vconsole-setup /dev/tty1";
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};
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restartTriggers = [ vconsoleConf ];
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};
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};
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}
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