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* Add "_args" to all sub-module configurations result. This attribute

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enable argument introspection outside of the scope of each sub-module.

svn path=/nixpkgs/trunk/; revision=18240
This commit is contained in:
Nicolas Pierron 2009-11-07 01:59:45 +00:00
parent 10d74af2f6
commit 233d72e4fb
1 changed files with 20 additions and 11 deletions
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31
pkgs/lib/options.nix
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@ -83,26 +83,35 @@ rec {
if opt ? type && opt.type.hasOptions then
let
optionConfig = vals: path: config:
let name = lib.removePrefix (opt.name + ".") path; in
map (f: lib.applyIfFunction f ({inherit name;} // config))
optionConfig = vals: args:
map (f: lib.applyIfFunction f args)
(opt.options ++ toList vals);
# Evaluate sub-modules.
subModuleMerge = path: vals:
lib.fix (args:
let result = recurseInto path (optionConfig vals args); in {
inherit (result) config options;
name = lib.removePrefix (opt.name + ".") path;
}
);
# Add _options in sub-modules to make it viewable from other
# modules.
subModuleMergeConfig = path: vals:
let result = subModuleMerge path vals; in
{ _args = result; } // result.config;
in
opt // {
merge = list:
opt.type.iter
(path: vals:
(lib.fix
(fixableMergeFun (recurseInto path) (optionConfig vals path))
).config
)
subModuleMergeConfig
opt.name
(opt.merge list);
options =
let path = opt.type.docPath opt.name; in
(lib.fix
(fixableMergeFun (recurseInto path) (optionConfig [] path))
).options;
(subModuleMerge path []).options;
}
else
opt;