debug.nix: deprecate strict

Replace the implementation by seq and add a deprecation warning.
The semantics seems a little bit off, but the function should only be
used for debugging.
This commit is contained in:
Profpatsch 2016-06-26 01:23:25 +02:00
parent 6889f53397
commit 93bbe13f98

View file

@ -73,27 +73,9 @@ rec {
# usage: { testX = allTrue [ true ]; }
testAllTrue = expr : { inherit expr; expected = map (x: true) expr; };
# evaluate everything once so that errors will occur earlier
# hacky: traverse attrs by adding a dummy
# ignores functions (should this behavior change?) See strictf
#
# Note: This should be a primop! Something like seq of haskell would be nice to
# have as well. It's used fore debugging only anyway
strict = x :
let
traverse = x :
if isString x then true
else if isAttrs x then
if x ? outPath then true
else all id (mapAttrsFlatten (n: traverse) x)
else if isList x then
all id (map traverse x)
else if isBool x then true
else if isFunction x then true
else if isInt x then true
else if x == null then true
else true; # a (store) path?
in if traverse x then x else throw "else never reached";
strict = v:
trace "Warning: strict is deprecated and will be removed in the next release"
(builtins.seq v v);
# example: (traceCallXml "myfun" id 3) will output something like
# calling myfun arg 1: 3 result: 3