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lib/types: prioritise coercedType in coercedTo

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This more intuitively matches `types.either` and allows paths to be
coerced to submodules again, which was inhibited by #76861
This commit is contained in:
arcnmx 2020-01-14 09:06:59 -08:00
parent f4c645a3a4
commit 92b464d57d
1 changed files with 4 additions and 4 deletions
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8
lib/types.nix
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@ -590,7 +590,7 @@ rec {
tail' = tail ts;
in foldl' either head' tail';
# Either value of type `finalType` or `coercedType`, the latter is
# Either value of type `coercedType` or `finalType`, the former is
# converted to `finalType` using `coerceFunc`.
coercedTo = coercedType: coerceFunc: finalType:
assert lib.assertMsg (coercedType.getSubModules == null)
@ -599,12 +599,12 @@ rec {
mkOptionType rec {
name = "coercedTo";
description = "${finalType.description} or ${coercedType.description} convertible to it";
check = x: finalType.check x || (coercedType.check x && finalType.check (coerceFunc x));
check = x: (coercedType.check x && finalType.check (coerceFunc x)) || finalType.check x;
merge = loc: defs:
let
coerceVal = val:
if finalType.check val then val
else coerceFunc val;
if coercedType.check val then coerceFunc val
else val;
in finalType.merge loc (map (def: def // { value = coerceVal def.value; }) defs);
emptyValue = finalType.emptyValue;
getSubOptions = finalType.getSubOptions;