Revert "* Revert the last two commits ..." (rev 17738) & Fix.

svn path=/nixpkgs/trunk/; revision=17740
This commit is contained in:
Nicolas Pierron 2009-10-09 23:03:24 +00:00
parent 037a777b7d
commit 926f20a1ee
3 changed files with 31 additions and 8 deletions

View file

@ -113,9 +113,17 @@ rec {
value
) module;
delayModule = module:
moduleApply { config = delayProperties; } module;
evalDefinitions = opt: values:
if opt ? type && opt.type.delayProperties then
map (delayPropertiesWithIter opt.type.iter opt.name) values
else
evalProperties values;
selectModule = name: m:
{ inherit (m) key;
} // (
@ -243,7 +251,7 @@ rec {
opt.extraConfigs;
in if hasOpt && isOption opt then
let defs = evalProperties values; in
let defs = evalDefinitions opt values; in
lib.addErrorContext "${eol
}while evaluating the option '${addName name}'.${eol
}${errorSource (modulesOf name)}${eol

View file

@ -69,18 +69,21 @@ rec {
# Move properties from the current attribute set to the attribute
# contained in this attribute set. This trigger property handlers called
# `onDelay' and `onGlobalDelay'.
delayProperties = attrs:
delayPropertiesWithIter = iter: path: attrs:
let cleanAttrs = rmProperties attrs; in
if isProperty attrs then
lib.mapAttrs (a: v:
iter (a: v:
lib.addErrorContext "while moving properties on the attribute `${a}'." (
triggerPropertiesGlobalDelay a (
triggerPropertiesDelay a (
copyProperties attrs v
)))) cleanAttrs
)))) path cleanAttrs
else
attrs;
delayProperties = # implicit attrs argument.
delayPropertiesWithIter (f: p: v: lib.mapAttrs f v) "";
# Call onDelay functions.
triggerPropertiesDelay = name: attrs:
let
@ -285,7 +288,7 @@ rec {
# priorities are kept. The template argument must reproduce the same
# attribute set hierarchy to override leaves of the hierarchy.
isOverride = attrs: (typeOf attrs) == "override";
mkOverride = priority: template: content: mkProperty {
mkOverrideTemplate = priority: template: content: mkProperty {
property = {
_type = "override";
onDelay = onOverrideDelay;
@ -295,6 +298,10 @@ rec {
inherit content;
};
# Currently an alias, but sooner or later the template argument should be
# removed.
mkOverride = mkOverrideTemplate;
# Sugar to override the default value of the option by making a new
# default value based on the configuration.
mkDefaultValue = content: mkOverride 1000 {} content;

View file

@ -19,7 +19,8 @@ rec {
# iter (iterate on all elements contained in this type)
# fold (fold all elements contained in this type)
# hasOptions (boolean: whatever this option contains an option set)
# path (path contatenated to the option name contained contained in the option set)
# delayProperties (boolean: should properties go through the evaluation of this option)
# docPath (path concatenated to the option name contained in the option set)
isOptionType = attrs: typeOf attrs == "option-type";
mkOptionType =
{ name
@ -31,10 +32,11 @@ rec {
, docPath ? lib.id
# If the type can contains option sets.
, hasOptions ? false
, delayProperties ? false
}:
{ _type = "option-type";
inherit name check merge iter fold docPath hasOptions;
inherit name check merge iter fold docPath hasOptions delayProperties;
};
@ -73,6 +75,7 @@ rec {
check = lib.traceValIfNot isDerivation;
};
listOf = types.list;
list = elemType: mkOptionType {
name = "list of ${elemType.name}s";
check = value: lib.traceValIfNot isList value && all elemType.check value;
@ -81,6 +84,10 @@ rec {
fold = op: nul: list: lib.fold (e: l: elemType.fold op l e) nul list;
docPath = path: elemType.docPath (path + ".*");
inherit (elemType) hasOptions;
# You cannot define multiple configurations of one entity, therefore
# no reason justify to delay properties inside list elements.
delayProperties = false;
};
attrsOf = elemType: mkOptionType {
@ -91,7 +98,7 @@ rec {
iter = f: path: set: lib.mapAttrs (name: elemType.iter f (path + "." + name)) set;
fold = op: nul: set: fold (e: l: elemType.fold op l e) nul (lib.attrValues set);
docPath = path: elemType.docPath (path + ".<name>");
inherit (elemType) hasOptions;
inherit (elemType) hasOptions delayProperties;
};
uniq = elemType: mkOptionType {
@ -118,6 +125,7 @@ rec {
merge = lib.id;
check = x: lib.traceValIfNot builtins.isAttrs x;
hasOptions = true;
delayProperties = true;
};
};