86 lines
3.2 KiB
Nix
86 lines
3.2 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
let
|
|
|
|
perlWrapped = pkgs.perl.withPackages (p: with p; [ ConfigIniFiles FileSlurp ]);
|
|
|
|
in
|
|
|
|
{
|
|
|
|
options.system.switch = {
|
|
enable = lib.mkOption {
|
|
type = lib.types.bool;
|
|
default = true;
|
|
description = ''
|
|
Whether to include the capability to switch configurations.
|
|
|
|
Disabling this makes the system unable to be reconfigured via `nixos-rebuild`.
|
|
|
|
This is good for image based appliances where updates are handled
|
|
outside the image. Reducing features makes the image lighter and
|
|
slightly more secure.
|
|
'';
|
|
};
|
|
|
|
enableNg = lib.mkOption {
|
|
type = lib.types.bool;
|
|
default = config.system.switch.enable;
|
|
defaultText = lib.literalExpression "config.system.switch.enable";
|
|
description = ''
|
|
Whether to use `switch-to-configuration-ng`, the Rust-based
|
|
re-implementation of the original Perl `switch-to-configuration`.
|
|
'';
|
|
};
|
|
};
|
|
|
|
config = lib.mkMerge [
|
|
(lib.mkIf (config.system.switch.enable && !config.system.switch.enableNg) {
|
|
system.activatableSystemBuilderCommands = ''
|
|
mkdir $out/bin
|
|
substitute ${./switch-to-configuration.pl} $out/bin/switch-to-configuration \
|
|
--subst-var out \
|
|
--subst-var-by toplevel ''${!toplevelVar} \
|
|
--subst-var-by coreutils "${pkgs.coreutils}" \
|
|
--subst-var-by distroId ${lib.escapeShellArg config.system.nixos.distroId} \
|
|
--subst-var-by installBootLoader ${lib.escapeShellArg config.system.build.installBootLoader} \
|
|
--subst-var-by localeArchive "${config.i18n.glibcLocales}/lib/locale/locale-archive" \
|
|
--subst-var-by perl "${perlWrapped}" \
|
|
--subst-var-by shell "${pkgs.bash}/bin/sh" \
|
|
--subst-var-by su "${pkgs.shadow.su}/bin/su" \
|
|
--subst-var-by systemd "${config.systemd.package}" \
|
|
--subst-var-by utillinux "${pkgs.util-linux}" \
|
|
;
|
|
|
|
chmod +x $out/bin/switch-to-configuration
|
|
${lib.optionalString (pkgs.stdenv.hostPlatform == pkgs.stdenv.buildPlatform) ''
|
|
if ! output=$(${perlWrapped}/bin/perl -c $out/bin/switch-to-configuration 2>&1); then
|
|
echo "switch-to-configuration syntax is not valid:"
|
|
echo "$output"
|
|
exit 1
|
|
fi
|
|
''}
|
|
'';
|
|
})
|
|
(lib.mkIf config.system.switch.enableNg {
|
|
# Use a subshell so we can source makeWrapper's setup hook without
|
|
# affecting the rest of activatableSystemBuilderCommands.
|
|
system.activatableSystemBuilderCommands = ''
|
|
(
|
|
source ${pkgs.buildPackages.makeWrapper}/nix-support/setup-hook
|
|
|
|
mkdir $out/bin
|
|
ln -sf ${lib.getExe pkgs.switch-to-configuration-ng} $out/bin/switch-to-configuration
|
|
wrapProgram $out/bin/switch-to-configuration \
|
|
--set OUT $out \
|
|
--set TOPLEVEL ''${!toplevelVar} \
|
|
--set DISTRO_ID ${lib.escapeShellArg config.system.nixos.distroId} \
|
|
--set INSTALL_BOOTLOADER ${lib.escapeShellArg config.system.build.installBootLoader} \
|
|
--set LOCALE_ARCHIVE ${config.i18n.glibcLocales}/lib/locale/locale-archive \
|
|
--set SYSTEMD ${config.systemd.package}
|
|
)
|
|
'';
|
|
})
|
|
];
|
|
|
|
}
|