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base repository: NixOS/nixpkgs
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head repository: NixOS/nixpkgs
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compare: 9ba1f2298285
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  • 2 commits
  • 2 files changed
  • 2 contributors

Commits on Jan 25, 2021

  1. 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; }; }; }
```
    @Profpatsch
    Profpatsch committed Jan 25, 2021
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    41e1314 View commit details

  2. Merge pull request #110672 from Profpatsch/lib-add-traceFnSeqN 

    lib/debug: add traceFnSeqN
    @infinisil
    infinisil authored Jan 25, 2021

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