diff options
author | Profpatsch <mail@profpatsch.de> | 2021-01-24 11:33:41 +0100 |
---|---|---|
committer | Profpatsch <mail@profpatsch.de> | 2021-01-25 19:25:50 +0100 |
commit | 41e13149f72bf1a5ef6a0f9b1da7c1c31cbc108a (patch) | |
tree | 55f4c760156b3109260498eebe25a58fcbcff39e /lib/default.nix | |
parent | ec334a1b01c491faa3463c96717b71921dddef2c (diff) |
lib/debug: add traceFnSeqN
Immensely helpful when you want to see the changes a function makes to
its value as it passes through.
Example:
```
$ nix-instantiate --strict --eval -E '(with import ./lib; traceFnSeqN 2 "id" (x: x) { a.b.c = 3; })'
trace: {
fn = "id";
from = {
a = {
b = {…};
};
};
to = {
a = {
b = {…};
};
};
}
{ a = { b = { c = 3; }; }; }
```
Diffstat (limited to 'lib/default.nix')
-rw-r--r-- | lib/default.nix | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/default.nix b/lib/default.nix index f985266ed938..803f1f765647 100644 --- a/lib/default.nix +++ b/lib/default.nix @@ -130,7 +130,7 @@ let assertMsg assertOneOf; inherit (self.debug) addErrorContextToAttrs traceIf traceVal traceValFn traceXMLVal traceXMLValMarked traceSeq traceSeqN traceValSeq - traceValSeqFn traceValSeqN traceValSeqNFn traceShowVal + traceValSeqFn traceValSeqN traceValSeqNFn traceFnSeqN traceShowVal traceShowValMarked showVal traceCall traceCall2 traceCall3 traceValIfNot runTests testAllTrue traceCallXml attrNamesToStr; inherit (self.misc) maybeEnv defaultMergeArg defaultMerge foldArgs |