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122 lines
3 KiB
Nix
122 lines
3 KiB
Nix
{ config, pkgs, ... }:
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with pkgs.lib;
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let
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# think about where to put this chunk of code!
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# required by other pieces as well
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requiredTTYs = config.services.mingetty.ttys
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++ config.boot.extraTTYs
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++ [ config.services.syslogd.tty ];
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ttys = map (dev: "/dev/${dev}") requiredTTYs;
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defaultLocale = config.i18n.defaultLocale;
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consoleFont = config.i18n.consoleFont;
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consoleKeyMap = config.i18n.consoleKeyMap;
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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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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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# dummy option so that requiredTTYs can be passed
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requiredTTYs = mkOption {
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default = [];
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description = "
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FIXME: find another place for this option.
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FIXME: find a good description.
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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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inherit requiredTTYs; # pass it to ./modules/tasks/tty-backgrounds.nix
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environment.systemPackages = [pkgs.kbd];
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jobs.kbd =
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{ description = "Keyboard / console initialisation";
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startOn = "udev";
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preStart = ''
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export LANG=${defaultLocale}
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export LOCALE_ARCHIVE=/var/run/current-system/sw/lib/locale/locale-archive
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export PATH=${pkgs.gzip}/bin:$PATH # Needed by setfont
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set +e # continue in case of errors
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# Enable or disable UTF-8 mode. This is based on
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# unicode_{start,stop}.
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echo 'Enabling or disabling Unicode mode...'
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charMap=$(${pkgs.glibc}/bin/locale charmap)
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if test "$charMap" = UTF-8; then
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for tty in ${toString ttys}; do
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# Tell the console output driver that the bytes arriving are
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# UTF-8 encoded multibyte sequences.
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echo -n -e '\033%G' > $tty
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done
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# Set the keyboard driver in UTF-8 mode.
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${pkgs.kbd}/bin/kbd_mode -u
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else
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for tty in ${toString ttys}; do
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# Tell the console output driver that the bytes arriving are
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# UTF-8 encoded multibyte sequences.
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echo -n -e '\033%@' > $tty
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done
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# Set the keyboard driver in ASCII (or any 8-bit character
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# set) mode.
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${pkgs.kbd}/bin/kbd_mode -a
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fi
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# Set the console font.
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for tty in ${toString ttys}; do
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${pkgs.kbd}/bin/setfont -C $tty ${consoleFont}
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done
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# Set the keymap.
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${pkgs.kbd}/bin/loadkeys '${consoleKeyMap}'
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'';
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};
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};
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}
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