qtdeclarative VS ChakraCore

Current ideas to work around it require individual solutions per distribution/ISV, as this would mean they'd have to come up with domain specific criteria for cache invalidation (as the store path/derivation hash on NixOS) and to maintain a downstream patch for this solution and furthermore wouldn't work for local build processes (e.g. from within an IDE).

Lesson of the day: never use mtimes, they'll bite you in the ass sooner or later!

[1] https://github.com/NixOS/nixpkgs/issues/177720

[2] https://reproducible-builds.org/docs/timestamps/

[3] https://github.com/qt/qtdeclarative/commit/5106afcd76e377a6b...

[4] https://github.com/NixOS/nixpkgs/issues/177720#issuecomment-...

I found a qmlcompiler folder at https://github.com/qt/qtdeclarative/tree/dev/src/qmlcompiler, but I don't know if it's the compiler itself or bindings. I can't find qmlsc in GitHub qt or qtproject though.

Ok sweet I see now. They used JavaScriptCore until 2011 or so, switched to V8 until 2013, and have been using their own implementation, q4, since then. The source code seems to be here: https://github.com/qt/qtdeclarative/tree/dev/src/qml/jsrunti....

Thanks! Will add and be live shortly.

I thought it would be a fun weird project to make Servo work with MS' abandoned JavaScript engine:

https://github.com/chakra-core/ChakraCore

Of course it is written in C++ and you'd probably want a pure Rust browser. But it is sad seeing that fairly complete open source JIT JavaScript engine sit and rot.

The JS engine is open source: https://github.com/chakra-core/ChakraCore

ChakraCore

Not to forget the engine Charka: https://github.com/chakra-core/ChakraCore

The only bit of the old Edge that had its source emancipated. It was/is? quite performant.

As a Linux user, I very much think Microsoft should have continued Trident and Chakra. Apple also should have continued releasing Safari for Windows. Our web QA setup was entirely built around Macs back then, but it was great to be able to test sites with Safari on Windows, and to have another responsive browser on Win32.

Edge was initially using Chakra but has been rebuilt using Chromium and the V8 engine.

https://github.com/chakra-core/ChakraCore/wiki/Architecture-...

I've found the source code to be quite readable too - albeit from a bug-finding perspective, not a strictly pedagogical one.

Furthermore, the new architecture decouples the JavaScript interface from the engine, enabling the use of other JavaScript engines such as Hermes, V8, or Chakra.

ChakraCore

I am astonished at the omission of ChakraCore, open sourced by Microsoft but sadly abandoned by them after they switched Edge to Chromium: https://github.com/chakra-core/ChakraCore. But it looks like it’s still chugging along as a community effort rather than being completely abandoned.