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|
{
config,
hjem-lib,
lib,
options,
pkgs,
utils,
...
}: let
inherit
(builtins)
attrNames
attrValues
concatLists
concatMap
concatStringsSep
filter
listToAttrs
toJSON
typeOf
;
inherit (hjem-lib) fileToJson;
inherit (lib.attrsets) filterAttrs nameValuePair optionalAttrs;
inherit (lib.meta) getExe;
inherit
(lib.modules)
importApply
mkDefault
mkMerge
;
inherit (lib.strings) concatMapStringsSep;
inherit (lib.trivial) flip pipe;
inherit (lib.types) submoduleWith;
osConfig = config;
cfg = config.hjem;
_class = "nixos";
enabledUsers = filterAttrs (_: u: u.enable) cfg.users;
disabledUsers = filterAttrs (_: u: !u.enable) cfg.users;
userFiles = user: [
user.files
user.xdg.cache.files
user.xdg.config.files
user.xdg.data.files
user.xdg.state.files
];
hjemCli = getExe cfg.cli.package;
hjemPkg = cfg.cli.package;
actualLinker =
if cfg.linker == null
then hjemPkg
else cfg.linker;
useExternalLinker = actualLinker != hjemPkg;
linkerExe = getExe actualLinker;
prefix =
if (typeOf cfg.linkerOptions == "set") && cfg.linkerOptions ? prefix
then cfg.linkerOptions.prefix
else ".backup-";
linkerArgFlags =
if !useExternalLinker
then ""
else if typeOf cfg.linkerOptions == "set"
then let
optsFile = pkgs.writeText "hjem-linker-options.json" (toJSON cfg.linkerOptions);
in ''--linker-arg --linker-opts --linker-arg ${optsFile}''
else concatMapStringsSep " " (arg: ''--linker-arg "${arg}"'') cfg.linkerOptions;
externalLinkerFlags =
if useExternalLinker
then ''--external-linker "${linkerExe}" ${linkerArgFlags}''
else "";
newManifests = let
writeManifest = user: let
name = "manifest-${user.user}.json";
in
pkgs.writeTextFile {
inherit name;
destination = "/${name}";
text = toJSON {
version = 3;
files = concatMap (flip pipe [
attrValues
(filter (x: x.enable))
(map fileToJson)
]) (userFiles user);
};
checkPhase = ''
set -e
CUE_CACHE_DIR=$(pwd)/.cache
CUE_CONFIG_DIR=$(pwd)/.config
${getExe pkgs.cue} vet -c ${../../manifest/v3.cue} $target
'';
};
in
pkgs.symlinkJoin {
name = "hjem-manifests";
paths = map writeManifest (attrValues enabledUsers);
};
hjemSubmodule = submoduleWith {
description = "Hjem submodule for Finix";
class = "hjem";
specialArgs =
cfg.specialArgs
// {
inherit
hjem-lib
osConfig
pkgs
utils
;
osOptions = options;
};
modules = concatLists [
[
../common/user.nix
(
{
config,
name,
...
}: let
user = osConfig.users.users.${name};
in {
assertions = [
{
assertion = config.enable -> user.enable;
message = "Enabled Hjem user '${name}' must also be configured and enabled in NixOS.";
}
];
user = mkDefault user.name;
directory = mkDefault user.home;
clobberFiles = mkDefault cfg.clobberByDefault;
}
)
]
# Evaluate additional modules under 'hjem.users.<username>' so that
# module systems built on Hjem are more ergonomic.
cfg.extraModules
];
};
in {
inherit _class;
imports = [
(importApply ../common/top-level.nix {inherit hjemSubmodule _class;})
];
config = mkMerge [
(optionalAttrs (options ? system.extraDependencies) {
system.extraDependencies = concatMap (u: u.extraDependencies) (attrValues enabledUsers);
})
{
finit.tasks = let
oldManifests = "/var/lib/hjem";
in
{
hjem-prepare = {
description = "Prepare Hjem manifests directory";
command = pkgs.writeShellScript "hjem-prepare" ''
mkdir -p ${oldManifests}
'';
};
hjem-cleanup = {
description = "Cleanup disabled users' manifests";
conditions = map (user: "task/hjem-copy-${user.user}/success") (attrValues enabledUsers);
command = pkgs.writeShellScript "hjem-cleanup" (
if disabledUsers != {}
then "rm -f ${
concatStringsSep " " (map (user: "${oldManifests}/manifest-${user.user}.json") (attrValues disabledUsers))
}"
else "true"
);
};
}
// optionalAttrs (enabledUsers != {}) (
listToAttrs (
concatMap (
user: let
username = user.user;
activateName = "hjem-activate-${username}";
copyName = "hjem-copy-${username}";
in [
(nameValuePair activateName {
description = "Link files for ${username} from their manifest";
user = username;
conditions = ["task/hjem-prepare/success"];
command = pkgs.writeShellScript activateName ''
new_manifest="${newManifests}/manifest-${username}.json"
old_manifest="${oldManifests}/manifest-${username}.json"
${hjemCli} internal activate \
--manifest "$new_manifest" \
--state "$old_manifest" \
--skip-state-update \
--prefix "${prefix}" \
${externalLinkerFlags} \
--json
'';
})
(nameValuePair copyName {
description = "Update Hjem state manifest for ${username}";
conditions = ["task/${activateName}/success"];
command = pkgs.writeShellScript copyName ''
${hjemCli} internal update-state \
--manifest "${newManifests}/manifest-${username}.json" \
--state "${oldManifests}/manifest-${username}.json"
'';
})
]
) (attrValues enabledUsers)
)
);
}
];
}
|
