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.
101 lines
2.3 KiB
Nix
101 lines
2.3 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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kernel = config.boot.kernelPackages.kernel;
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activateConfiguration = config.system.activationScripts.script;
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readonlyMountpoint = pkgs.runCommand "readonly-mountpoint" {} ''
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mkdir -p $out/bin
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cc -O3 ${./readonly-mountpoint.c} -o $out/bin/readonly-mountpoint
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strip -s $out/bin/readonly-mountpoint
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'';
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bootStage2 = pkgs.substituteAll {
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src = ./stage-2-init.sh;
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shellDebug = "${pkgs.bashInteractive}/bin/bash";
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isExecutable = true;
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inherit (config.boot) devShmSize runSize cleanTmpDir;
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inherit (config.nix) readOnlyStore;
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ttyGid = config.ids.gids.tty;
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path =
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[ pkgs.coreutils
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pkgs.utillinux
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pkgs.sysvtools
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] ++ (optional config.boot.cleanTmpDir pkgs.findutils)
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++ optional config.nix.readOnlyStore readonlyMountpoint;
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postBootCommands = pkgs.writeText "local-cmds"
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''
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${config.boot.postBootCommands}
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${config.powerManagement.powerUpCommands}
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'';
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};
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in
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{
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options = {
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boot = {
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postBootCommands = mkOption {
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default = "";
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example = "rm -f /var/log/messages";
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type = types.lines;
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description = ''
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Shell commands to be executed just before systemd is started.
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'';
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};
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devSize = mkOption {
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default = "5%";
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example = "32m";
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type = types.str;
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description = ''
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Size limit for the /dev tmpfs. Look at mount(8), tmpfs size option,
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for the accepted syntax.
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'';
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};
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devShmSize = mkOption {
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default = "50%";
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example = "256m";
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type = types.str;
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description = ''
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Size limit for the /dev/shm tmpfs. Look at mount(8), tmpfs size option,
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for the accepted syntax.
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'';
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};
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runSize = mkOption {
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default = "25%";
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example = "256m";
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type = types.str;
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description = ''
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Size limit for the /run tmpfs. Look at mount(8), tmpfs size option,
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for the accepted syntax.
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'';
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};
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cleanTmpDir = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to delete all files in <filename>/tmp</filename> during boot.
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'';
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};
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};
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};
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config = {
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system.build.bootStage2 = bootStage2;
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};
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}
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