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lib/types: Introduce mkOptionType occurringTypes argument

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This will be used to issue deprecation warnings recursively in the next
commit

In addition, this allows easily getting nested types of other options, which
is useful when you want to create an option that aliases a part of
another one.
This commit is contained in:
Silvan Mosberger 2020-09-30 01:02:46 +02:00
parent f7906ec8b2
commit 68955fe612
1 changed files with 18 additions and 1 deletions
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19
lib/types.nix
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@ -147,9 +147,13 @@ rec {
, # The deprecation message to display when this type is used by an option
# If null, the type isn't deprecated
deprecationMessage ? null
, # The types that occur in the definition of this type. This is used to
# issue deprecation warnings recursively. Can also be used to reuse
# nested types
nestedTypes ? {}
}:
{ _type = "option-type";
inherit name check merge emptyValue getSubOptions getSubModules substSubModules typeMerge functor deprecationMessage;
inherit name check merge emptyValue getSubOptions getSubModules substSubModules typeMerge functor deprecationMessage nestedTypes;
description = if description == null then name else description;
};
@ -365,6 +369,7 @@ rec {
getSubModules = elemType.getSubModules;
substSubModules = m: listOf (elemType.substSubModules m);
functor = (defaultFunctor name) // { wrapped = elemType; };
nestedTypes.elemType = elemType;
};
nonEmptyListOf = elemType:
@ -389,6 +394,7 @@ rec {
getSubModules = elemType.getSubModules;
substSubModules = m: attrsOf (elemType.substSubModules m);
functor = (defaultFunctor name) // { wrapped = elemType; };
nestedTypes.elemType = elemType;
};
# A version of attrsOf that's lazy in its values at the expense of
@ -413,6 +419,7 @@ rec {
getSubModules = elemType.getSubModules;
substSubModules = m: lazyAttrsOf (elemType.substSubModules m);
functor = (defaultFunctor name) // { wrapped = elemType; };
nestedTypes.elemType = elemType;
};
# TODO: drop this in the future:
@ -421,6 +428,7 @@ rec {
deprecationMessage = "Mixing lists with attribute values is no longer"
+ " possible; please use `types.attrsOf` instead. See"
+ " https://github.com/NixOS/nixpkgs/issues/1800 for the motivation.";
nestedTypes.elemType = elemType;
};
# Value of given type but with no merging (i.e. `uniq list`s are not concatenated).
@ -433,6 +441,7 @@ rec {
getSubModules = elemType.getSubModules;
substSubModules = m: uniq (elemType.substSubModules m);
functor = (defaultFunctor name) // { wrapped = elemType; };
nestedTypes.elemType = elemType;
};
# Null or value of ...
@ -451,6 +460,7 @@ rec {
getSubModules = elemType.getSubModules;
substSubModules = m: nullOr (elemType.substSubModules m);
functor = (defaultFunctor name) // { wrapped = elemType; };
nestedTypes.elemType = elemType;
};
functionTo = elemType: mkOptionType {
@ -535,6 +545,9 @@ rec {
substSubModules = m: submoduleWith (attrs // {
modules = m;
});
nestedTypes = lib.optionalAttrs (freeformType != null) {
freeformType = freeformType;
};
functor = defaultFunctor name // {
type = types.submoduleWith;
payload = {
@ -596,6 +609,8 @@ rec {
then functor.type mt1 mt2
else null;
functor = (defaultFunctor name) // { wrapped = [ t1 t2 ]; };
nestedTypes.left = t1;
nestedTypes.right = t2;
};
# Any of the types in the given list
@ -627,6 +642,8 @@ rec {
substSubModules = m: coercedTo coercedType coerceFunc (finalType.substSubModules m);
typeMerge = t1: t2: null;
functor = (defaultFunctor name) // { wrapped = finalType; };
nestedTypes.coercedType = coercedType;
nestedTypes.finalType = finalType;
};
# Obsolete alternative to configOf. It takes its option