mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-25 03:17:13 +00:00
dd0a951279
Add support for custom device-tree files, and applying overlays to them. This is useful for supporting non-discoverable hardware, such as sensors attached to GPIO pins on a Raspberry Pi.
279 lines
8.7 KiB
Nix
279 lines
8.7 KiB
Nix
{ config, lib, pkgs, modules, baseModules, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
|
|
|
|
# This attribute is responsible for creating boot entries for
|
|
# child configuration. They are only (directly) accessible
|
|
# when the parent configuration is boot default. For example,
|
|
# you can provide an easy way to boot the same configuration
|
|
# as you use, but with another kernel
|
|
# !!! fix this
|
|
cloner = inheritParent: list:
|
|
map (childConfig:
|
|
(import ../../../lib/eval-config.nix {
|
|
inherit baseModules;
|
|
modules =
|
|
(optionals inheritParent modules)
|
|
++ [ ./no-clone.nix ]
|
|
++ [ childConfig ];
|
|
}).config.system.build.toplevel
|
|
) list;
|
|
|
|
children =
|
|
cloner false config.nesting.children
|
|
++ cloner true config.nesting.clone;
|
|
|
|
systemBuilder =
|
|
let
|
|
kernelPath = "${config.boot.kernelPackages.kernel}/" +
|
|
"${config.system.boot.loader.kernelFile}";
|
|
initrdPath = "${config.system.build.initialRamdisk}/" +
|
|
"${config.system.boot.loader.initrdFile}";
|
|
in ''
|
|
mkdir $out
|
|
|
|
# Containers don't have their own kernel or initrd. They boot
|
|
# directly into stage 2.
|
|
${optionalString (!config.boot.isContainer) ''
|
|
if [ ! -f ${kernelPath} ]; then
|
|
echo "The bootloader cannot find the proper kernel image."
|
|
echo "(Expecting ${kernelPath})"
|
|
false
|
|
fi
|
|
|
|
ln -s ${kernelPath} $out/kernel
|
|
ln -s ${config.system.modulesTree} $out/kernel-modules
|
|
${optionalString (config.hardware.deviceTree.package != null) ''
|
|
ln -s ${config.hardware.deviceTree.package} $out/dtbs
|
|
''}
|
|
|
|
echo -n "$kernelParams" > $out/kernel-params
|
|
|
|
ln -s ${initrdPath} $out/initrd
|
|
|
|
ln -s ${config.system.build.initialRamdiskSecretAppender}/bin/append-initrd-secrets $out
|
|
|
|
ln -s ${config.hardware.firmware}/lib/firmware $out/firmware
|
|
''}
|
|
|
|
echo "$activationScript" > $out/activate
|
|
substituteInPlace $out/activate --subst-var out
|
|
chmod u+x $out/activate
|
|
unset activationScript
|
|
|
|
cp ${config.system.build.bootStage2} $out/init
|
|
substituteInPlace $out/init --subst-var-by systemConfig $out
|
|
|
|
ln -s ${config.system.build.etc}/etc $out/etc
|
|
ln -s ${config.system.path} $out/sw
|
|
ln -s "$systemd" $out/systemd
|
|
|
|
echo -n "$configurationName" > $out/configuration-name
|
|
echo -n "systemd ${toString config.systemd.package.interfaceVersion}" > $out/init-interface-version
|
|
echo -n "$nixosLabel" > $out/nixos-version
|
|
echo -n "${pkgs.stdenv.hostPlatform.system}" > $out/system
|
|
|
|
mkdir $out/fine-tune
|
|
childCount=0
|
|
for i in $children; do
|
|
childCount=$(( childCount + 1 ))
|
|
ln -s $i $out/fine-tune/child-$childCount
|
|
done
|
|
|
|
mkdir $out/bin
|
|
export localeArchive="${config.i18n.glibcLocales}/lib/locale/locale-archive"
|
|
substituteAll ${./switch-to-configuration.pl} $out/bin/switch-to-configuration
|
|
chmod +x $out/bin/switch-to-configuration
|
|
|
|
echo -n "${toString config.system.extraDependencies}" > $out/extra-dependencies
|
|
|
|
${config.system.extraSystemBuilderCmds}
|
|
'';
|
|
|
|
# Putting it all together. This builds a store path containing
|
|
# symlinks to the various parts of the built configuration (the
|
|
# kernel, systemd units, init scripts, etc.) as well as a script
|
|
# `switch-to-configuration' that activates the configuration and
|
|
# makes it bootable.
|
|
baseSystem = pkgs.stdenvNoCC.mkDerivation {
|
|
name = let hn = config.networking.hostName;
|
|
nn = if (hn != "") then hn else "unnamed";
|
|
in "nixos-system-${nn}-${config.system.nixos.label}";
|
|
preferLocalBuild = true;
|
|
allowSubstitutes = false;
|
|
buildCommand = systemBuilder;
|
|
|
|
inherit (pkgs) utillinux coreutils;
|
|
systemd = config.systemd.package;
|
|
shell = "${pkgs.bash}/bin/sh";
|
|
su = "${pkgs.shadow.su}/bin/su";
|
|
|
|
inherit children;
|
|
kernelParams = config.boot.kernelParams;
|
|
installBootLoader =
|
|
config.system.build.installBootLoader
|
|
or "echo 'Warning: do not know how to make this configuration bootable; please enable a boot loader.' 1>&2; true";
|
|
activationScript = config.system.activationScripts.script;
|
|
nixosLabel = config.system.nixos.label;
|
|
|
|
configurationName = config.boot.loader.grub.configurationName;
|
|
|
|
# Needed by switch-to-configuration.
|
|
|
|
perl = "${pkgs.perl}/bin/perl " + (concatMapStringsSep " " (lib: "-I${lib}/${pkgs.perl.libPrefix}") (with pkgs.perlPackages; [ FileSlurp NetDBus XMLParser XMLTwig ]));
|
|
};
|
|
|
|
# Handle assertions and warnings
|
|
|
|
failedAssertions = map (x: x.message) (filter (x: !x.assertion) config.assertions);
|
|
|
|
baseSystemAssertWarn = if failedAssertions != []
|
|
then throw "\nFailed assertions:\n${concatStringsSep "\n" (map (x: "- ${x}") failedAssertions)}"
|
|
else showWarnings config.warnings baseSystem;
|
|
|
|
# Replace runtime dependencies
|
|
system = fold ({ oldDependency, newDependency }: drv:
|
|
pkgs.replaceDependency { inherit oldDependency newDependency drv; }
|
|
) baseSystemAssertWarn config.system.replaceRuntimeDependencies;
|
|
|
|
in
|
|
|
|
{
|
|
options = {
|
|
|
|
system.build = mkOption {
|
|
internal = true;
|
|
default = {};
|
|
type = types.attrs;
|
|
description = ''
|
|
Attribute set of derivations used to setup the system.
|
|
'';
|
|
};
|
|
|
|
nesting.children = mkOption {
|
|
default = [];
|
|
description = ''
|
|
Additional configurations to build.
|
|
'';
|
|
};
|
|
|
|
nesting.clone = mkOption {
|
|
default = [];
|
|
description = ''
|
|
Additional configurations to build based on the current
|
|
configuration which then has a lower priority.
|
|
|
|
To switch to a cloned configuration (e.g. <literal>child-1</literal>)
|
|
at runtime, run
|
|
|
|
<programlisting>
|
|
# sudo /run/current-system/fine-tune/child-1/bin/switch-to-configuration test
|
|
</programlisting>
|
|
'';
|
|
};
|
|
|
|
system.boot.loader.id = mkOption {
|
|
internal = true;
|
|
default = "";
|
|
description = ''
|
|
Id string of the used bootloader.
|
|
'';
|
|
};
|
|
|
|
system.boot.loader.kernelFile = mkOption {
|
|
internal = true;
|
|
default = pkgs.stdenv.hostPlatform.platform.kernelTarget;
|
|
type = types.str;
|
|
description = ''
|
|
Name of the kernel file to be passed to the bootloader.
|
|
'';
|
|
};
|
|
|
|
system.boot.loader.initrdFile = mkOption {
|
|
internal = true;
|
|
default = "initrd";
|
|
type = types.str;
|
|
description = ''
|
|
Name of the initrd file to be passed to the bootloader.
|
|
'';
|
|
};
|
|
|
|
system.copySystemConfiguration = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = ''
|
|
If enabled, copies the NixOS configuration file
|
|
(usually <filename>/etc/nixos/configuration.nix</filename>)
|
|
and links it from the resulting system
|
|
(getting to <filename>/run/current-system/configuration.nix</filename>).
|
|
Note that only this single file is copied, even if it imports others.
|
|
'';
|
|
};
|
|
|
|
system.extraSystemBuilderCmds = mkOption {
|
|
type = types.lines;
|
|
internal = true;
|
|
default = "";
|
|
description = ''
|
|
This code will be added to the builder creating the system store path.
|
|
'';
|
|
};
|
|
|
|
system.extraDependencies = mkOption {
|
|
type = types.listOf types.package;
|
|
default = [];
|
|
description = ''
|
|
A list of packages that should be included in the system
|
|
closure but not otherwise made available to users. This is
|
|
primarily used by the installation tests.
|
|
'';
|
|
};
|
|
|
|
system.replaceRuntimeDependencies = mkOption {
|
|
default = [];
|
|
example = lib.literalExample "[ ({ original = pkgs.openssl; replacement = pkgs.callPackage /path/to/openssl { }; }) ]";
|
|
type = types.listOf (types.submodule (
|
|
{ ... }: {
|
|
options.original = mkOption {
|
|
type = types.package;
|
|
description = "The original package to override.";
|
|
};
|
|
|
|
options.replacement = mkOption {
|
|
type = types.package;
|
|
description = "The replacement package.";
|
|
};
|
|
})
|
|
);
|
|
apply = map ({ original, replacement, ... }: {
|
|
oldDependency = original;
|
|
newDependency = replacement;
|
|
});
|
|
description = ''
|
|
List of packages to override without doing a full rebuild.
|
|
The original derivation and replacement derivation must have the same
|
|
name length, and ideally should have close-to-identical directory layout.
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
|
|
config = {
|
|
|
|
system.extraSystemBuilderCmds =
|
|
optionalString
|
|
config.system.copySystemConfiguration
|
|
''ln -s '${import ../../../lib/from-env.nix "NIXOS_CONFIG" <nixos-config>}' \
|
|
"$out/configuration.nix"
|
|
'';
|
|
|
|
system.build.toplevel = system;
|
|
|
|
};
|
|
|
|
}
|