trace
lib.sources.trace
Docs pulled from | This Revision | 16 minutes ago
Add logging to a source, for troubleshooting the filtering behavior.
Inputs
src
-
Source to debug. The returned source will behave like this source, but also log its filter invocations.
Type
sources.trace :: sourceLike -> Source
Noogle detected
Implementation
The following is the current implementation of this function.
trace =
# Source to debug. The returned source will behave like this source, but also log its filter invocations.
src:
let
attrs = toSourceAttributes src;
in
fromSourceAttributes (
attrs
// {
filter =
path: type:
let
r = attrs.filter path type;
in
builtins.trace "${attrs.name}.filter ${path} = ${boolToString r}" r;
}
)
// {
satisfiesSubpathInvariant = src ? satisfiesSubpathInvariant && src.satisfiesSubpathInvariant;
};