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Name argument of option's merge functions are now obsolete.

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svn path=/nixpkgs/trunk/; revision=13842
This commit is contained in:
Nicolas Pierron 2009-01-25 00:31:43 +00:00
parent daa6f9c7ef
commit c1b9946c28
1 changed files with 15 additions and 4 deletions
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19
pkgs/lib/default.nix
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@ -477,7 +477,7 @@ rec {
}
) (builtins.attrNames defs));
mergeDefaultOption = name: list:
mergeDefaultOption = list:
if list != [] && tail list == [] then head list
else if all __isFunction list then x: mergeDefaultOption (map (f: f x) list)
else if all __isList list then concatLists list
@ -486,7 +486,7 @@ rec {
else if all (x: x == toString x) list then concatStrings list
else throw "Cannot merge values.";
mergeTypedOption = typeName: predicate: merge: name: list:
mergeTypedOption = typeName: predicate: merge: list:
if all predicate list then merge list
else throw "Expect a ${typeName}.";
@ -500,7 +500,7 @@ rec {
(x: if builtins ? isString then builtins.isString x else x + "")
concatStrings;
mergeOneOption = name: list:
mergeOneOption = list:
if list == [] then abort "This case should never happens."
else if tail list != [] then throw "Multiple definitions. Only one is allowed for this option."
else head list;
@ -556,13 +556,24 @@ rec {
# function of each option to get the result.
mergeOptionSets = noOption: newMergeOptionSets; # ignore argument
newMergeOptionSets =
let
# handle merge functions with & without name argument.
mergeWrapper = merge: name: values:
let
newMerge = merge values;
oldMerge = builtins.trace
"obsolete: Merge function of ${name} option has name argument."
(merge name values);
in
if __isFunction newMerge then oldMerge else newMerge;
in
handleOptionSets {
export = opt: values:
opt.apply (
if values == [] then
if opt ? default then opt.default
else throw "Not defined."
else opt.merge (opt.name) values
else mergeWrapper opt.merge opt.name values
);
notHandle = throw "Used without option declaration.";
};