85 lines
2.2 KiB
Nix
85 lines
2.2 KiB
Nix
{ config, pkgs, ... }:
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with pkgs.lib;
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{
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###### interface
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options = {
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services.mingetty = {
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greetingLine = mkOption {
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type = types.str;
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default = ''<<< Welcome to NixOS ${config.system.nixosVersion} (\m) - \l >>>'';
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description = ''
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Welcome line printed by mingetty.
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'';
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};
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helpLine = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Help line printed by mingetty below the welcome line.
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Used by the installation CD to give some hints on
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how to proceed.
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'';
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};
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serialSpeed = mkOption {
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type = types.listOf types.int;
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default = [ 115200 57600 38400 9600 ];
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example = [ 38400 9600 ];
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description = ''
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Bitrates to allow for agetty's listening on serial ports. Listing more
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bitrates gives more interoperability but at the cost of long delays
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for getting a sync on the line.
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'';
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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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systemd.services."getty@" =
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{ baseUnit = pkgs.runCommand "getty.service" {}
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''
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sed '/ExecStart/ d' < ${config.systemd.package}/example/systemd/system/getty@.service > $out
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'';
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serviceConfig.ExecStart = "@${pkgs.utillinux}/sbin/agetty agetty --noclear --login-program ${pkgs.shadow}/bin/login %I 38400";
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restartIfChanged = false;
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};
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systemd.services."serial-getty@" =
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{ baseUnit = pkgs.runCommand "serial-getty.service" {}
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''
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sed '/ExecStart/ d' < ${config.systemd.package}/example/systemd/system/serial-getty@.service > $out
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'';
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serviceConfig.ExecStart =
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let speeds = concatStringsSep "," (map toString config.services.mingetty.serialSpeed);
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in "@${pkgs.utillinux}/sbin/agetty agetty --login-program ${pkgs.shadow}/bin/login %I ${speeds}";
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restartIfChanged = false;
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};
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environment.etc = singleton
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{ # Friendly greeting on the virtual consoles.
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source = pkgs.writeText "issue" ''
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[1;32m${config.services.mingetty.greetingLine}[0m
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${config.services.mingetty.helpLine}
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'';
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target = "issue";
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};
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};
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}
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