nlohmann::TryResolveTest::BuildTrace Struct Reference

Public Member Functions
bool	operator== (const BuildTrace &) const=default

Public Attributes
std::map< SingleDerivedPath::Built, StorePath >	dict

Detailed Description

A simple in-memory derived build trace. (e.g. we have SingleDerivedPath::Built not StorePath keys, because that is how the tryResolved callback works.)

For a real-world build trace, derived build traces are much more work to get correct, and should be at most a caching layer atop an underlying source-of-truth build trace. (This is as described in the manual.)

However, this is just for some simple in-memory unit tests, with tiny amounts of data we can hand-review, so it's fine. The point is unit testing tryResolve, not unit testing "deep queries" from a non-derived build trace (what is done in outputs-query.cc) anyways — that would be a separate unit test.

---

The documentation for this struct was generated from the following file:

• /builddir/build/BUILD/nix-2.35.2-build/nix-2.35.2/src/libstore-tests/derivations.cc