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svn path=/nixpkgs/trunk/; revision=16412

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This commit is contained in:
Eelco Dolstra 2009-07-17 12:04:34 +00:00
parent 9075d2a2cd
commit 10c4ec0ed8
2 changed files with 4 additions and 2 deletions
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4
pkgs/lib/debug.nix
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@ -33,11 +33,11 @@ rec {
else "x is attr set { ${attrNamesToStr x} }"
else if isFunction x then "x is a function"
else if x == [] then "x is an empty list"
else if isList x then "x is a list, first item is : ${showVal (head x)}"
else if isList x then "x is a list, first element is: ${showVal (head x)}"
else if x == true then "x is boolean true"
else if x == false then "x is boolean false"
else if x == null then "x is null"
else "x is probably a string starting, starting characters: ${substring 0 50 x}..";
else "x is probably a string `${substring 0 50 x}...'";
# trace the arguments passed to function and its result
traceCall = n : f : a : let t = n2 : x : traceShowValMarked "${n} ${n2}:" x; in t "result" (f (t "arg 1" a));
traceCall2 = n : f : a : b : let t = n2 : x : traceShowValMarked "${n} ${n2}:" x; in t "result" (f (t "arg 1" a) (t "arg 2" b));

2
pkgs/lib/types.nix
View File

@ -110,6 +110,8 @@ rec {
fold = op: nul: v: if v == null then nul else elemType.fold op nul v;
};
# !!! this should be a type constructor that takes the options as
# an argument.
optionSet = mkOptionType {
name = "option set";
check = x: lib.traceValIfNot builtins.isAttrs x;