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Report bad default values which would have cause a build failure if they

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were used to build a NixOS system.

svn path=/nixpkgs/trunk/; revision=17286
This commit is contained in:
Nicolas Pierron 2009-09-19 22:10:11 +00:00
parent 854293fc7b
commit 6041b78fa4
1 changed files with 8 additions and 2 deletions
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10
pkgs/lib/options.nix
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@ -235,6 +235,12 @@ rec {
# the set generated with filterOptionSets.
optionAttrSetToDocList = ignore: newOptionAttrSetToDocList;
newOptionAttrSetToDocList = attrs:
let tryEval = v:
let res = builtins.tryEval v; in
if builtins ? tryEval then
if res.success then res.value else "<error>"
else v;
in
let options = collect isOption attrs; in
fold (opt: rest:
let
@ -246,8 +252,8 @@ rec {
declarations = map (x: toString x.source) opt.declarations;
definitions = map (x: toString x.source) opt.definitions;
}
// (if opt ? example then {inherit(opt) example;} else {})
// (if opt ? default then {inherit(opt) default;} else {});
// optionalAttrs (opt ? example) { example = tryEval opt.example; }
// optionalAttrs (opt ? default) { default = tryEval opt.default; };
subOptions =
if opt ? options then