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Add heterogeneousAttrsOf option type

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It is parameterized by a function that takes a name and evaluates to the
option type for the attribute of that name. Together with
submoduleWithExtraArgs, this subsumes nixosSubmodule.
This commit is contained in:
Shea Levy 2014-02-11 14:59:24 -05:00
parent 8764758044
commit 3f70dabad3
2 changed files with 11 additions and 20 deletions
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30
lib/types.nix
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@ -124,6 +124,17 @@ rec {
getSubOptions = prefix: elemType.getSubOptions (prefix ++ ["<name>"]);
};
heterogeneousAttrsOf = elemTypeFn: mkOptionType {
name = "attribute set of values of many types, including ${(elemTypeFn "<name>").name}";
check = x: isAttrs x && all (name: (elemTypeFn name).check (getAttr name x)) (attrNames x);
merge = loc: defs:
zipAttrsWith (name: (elemTypeFn name).merge (loc ++ [name]))
# Push down position info.
(map (def: listToAttrs (mapAttrsToList (n: def':
{ name = n; value = { inherit (def) file; value = def'; }; }) def.value)) defs);
getSubOptions = prefix: (elemTypeFn "<name>").getSubOptions (prefix ++ ["<name>"]);
};
# List or attribute set of ...
loaOf = elemType:
let
@ -198,25 +209,6 @@ rec {
submodule = submoduleWithExtraArgs {};
nixosSubmodule = nixos: args: mkOptionType rec {
name = "submodule containing a NixOS config";
check = x: isAttrs x || isFunction x;
merge = loc: defs:
let
coerce = def: if isFunction def then def else { config = def; };
in (import (nixos + "/lib/eval-config.nix") (args // {
modules = (args.modules or []) ++
map (def: { _file = def.file; imports = [(coerce def.value)]; }) defs;
prefix = loc;
})).config;
getSubOptions = prefix: (import (nixos + "/lib/eval-config.nix") (args // {
modules = (args.modules or []);
inherit prefix;
})).options;
};
# Obsolete alternative to configOf. It takes its option
# declarations from the ‘options’ attribute of containing option
# declaration.

1
nixos/modules/virtualisation/containers.nix
View File

@ -15,7 +15,6 @@ with pkgs.lib;
};
systemd.containers = mkOption {
# !!! Should probably use nixosSubmodule here
type = types.attrsOf (types.submodule (
{ config, options, name, ... }:
{