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Add support for require attribute with a filename as argument.

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svn path=/nixpkgs/trunk/; revision=15657
This commit is contained in:
Nicolas Pierron 2009-05-19 23:06:56 +00:00
parent 5fff65dce9
commit 36dcabd7be
1 changed files with 18 additions and 3 deletions
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21
pkgs/lib/options.nix
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@ -136,6 +136,16 @@ rec {
notHandle = opts: {};
};
# Unfortunately this can also be a string.
isPath = x: !(
builtins.isFunction x
|| builtins.isAttrs x
|| builtins.isInt x
|| builtins.isBool x
|| builtins.isList x
);
# Evaluate a list of option sets that would be merged with the
# function "merge" which expects two arguments. The attribute named
# "require" is used to imports option declarations and bindings.
@ -157,6 +167,10 @@ rec {
else
cfgSet1;
filenameHandler = cfg:
if isPath cfg then import cfg
else cfg;
# call configuration "files" with one of the existing convention.
argumentHandler = cfg:
let
@ -173,9 +187,10 @@ rec {
else cfg0;
preprocess = cfg0:
let cfg1 = argumentHandler cfg0;
cfg2 = noImportConditions cfg1;
in cfg2;
let cfg1 = filenameHandler cfg0;
cfg2 = argumentHandler cfg1;
cfg3 = noImportConditions cfg2;
in cfg3;
getRequire = x:
toList (getAttr ["require"] [] (preprocess x));