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PoC part 2

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Qyriad 2026-02-03 22:31:32 +01:00
parent 0580ad02bd
commit 15ed56d8ad
3 changed files with 117 additions and 40 deletions
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79
modules/dynamicism/default.nix
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@ -13,19 +13,43 @@ let
cfg = config.dynamicism;
opts = options.dynamicism;
subOpts = lib.mapAttrs (_: metaAttr: metaAttr.configuration.options) options.dynamicism.for.valueMeta.attrs;
settingsFormat = pkgs.formats.yaml { };
concatFoldl = f: list: lib.foldl' (acc: value: acc ++ (f value)) [ ] list;
recUpdateFoldlAttrs = f: attrs: lib.foldlAttrs (acc: name: value: lib.recursiveUpdate acc (f name value)) { } attrs;
finalSettingsFor = { ... }@submod: lib.foldl (acc: optPath: let
next =
assert lib.isList optPath;
lib.setAttrByPath optPath (lib.getAttrFromPath optPath config);
in lib.recursiveUpdate acc next) { } submod.source-options;
ourAssertions = lib.concatAttrValues {
unitsExist = concatFoldl (submod: let
next = lib.map (unit: assert lib.isString unit; {
assertion = config.systemd.units.${unit}.enable or false;
message = ''
'${showOption submod.systemd-services-updated.loc}' specified non-existent unit '${unit}'
'';
}) submod.systemd-services-updated.value;
in lib.optionals submod.enable.value next) (lib.attrValues subOpts);
optsExist = concatFoldl (submod: lib.optionals submod.enable.value (lib.map (optPath: {
assertion = lib.hasAttrByPath optPath options;
message = "'${showOption submod.source-options.loc}' specified non-existent option '${showOption optPath}'";
}) submod.source-options.value)) (lib.attrValues subOpts);
};
in
{
#
# Interface.
#
options.dynamicism = {
for = mkOption {
type = t.attrsOf (t.submoduleWith {
modules = [ ./submodule.nix ];
shorthandOnlyDefinesConfig = false;
specialArgs = { inherit pkgs; };
});
default = { };
};
@ -40,39 +64,30 @@ in
};
};
config.assertions = let
unitsExist = lib.foldl' (acc: submod: let
next = lib.map (unit: assert lib.isString unit; {
assertion = config.systemd.units.${unit}.enable or false;
message = ''
'${showOption submod.systemd-services-updated.loc}' specified non-existent unit '${unit}'
'';
}) submod.systemd-services-updated.value;
in acc ++ lib.optionals submod.enable.value next) [ ] (lib.attrValues subOpts);
# Assertions.
config.assertions = ourAssertions;
optsExist = lib.foldl' (acc: submod: let
next = lib.map (optPath: {
assertion = lib.hasAttrByPath optPath options;
message = "'${showOption submod.source-options.loc}' specified non-existent option '${showOption optPath}'";
}) submod.source-options.value;
in acc ++ lib.optionals submod.enable.value next) [ ] (lib.attrValues subOpts);
in lib.concatLists [
unitsExist
optsExist
];
#
# Generic implementation.
#
config.dynamicism.finalSettings = lib.asserts.checkAssertWarn ourAssertions [ ] (
recUpdateFoldlAttrs (name: { ... }@submod: finalSettingsFor submod) config.dynamicism.for
);
config.dynamicism.for = {
gotosocial = {
source-options = [
"services.gotosocial.setting"
];
systemd-services-updated = [
"gotosocial.service"
];
};
# Implementations.
config.dynamicism.for.gotosocial = let
cfg = config.dynamicism.for.gotosocial;
in {
source-options = [
"services.gotosocial.settings"
];
configFile = settingsFormat.generate "gotosocial-override.yml" config.services.gotosocial.settings;
unitDropins."gotosocial.service" = pkgs.writeText "gotosocial-override.conf" ''
[Service]
ExecStart=
ExecStart=${lib.getExe' pkgs.gotosocial "gotosocial"} --config-path ${cfg.configFile} start
'';
};
config.dynamicism.finalSettings = lib.foldlAttrs (acc: name: { ... }@submod: let
next = finalSettingsFor submod;
in lib.recursiveUpdate acc next) { } config.dynamicism.for;
}