History

Vincent Ambo dd8f5f1dc8 feat(tvix/eval): implement nested '?' operator Implements the nested presence check operator for attribuet sets by traversing the chain of lookups through instructions that push/pop sequentially deeper attribute sets onto the stack. Note that this commit introduces a bug in case of nested attributes not being found, which is fixed in a later commit. Change-Id: Ic8b4c8648736f6cb048e3aa52592e4d075bf0544 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6163 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: grfn <grfn@gws.fyi>		2022-08-26 15:06:52 +00:00
..
benches	feat(tvix/eval): Add initial benchmarking infrastructure	2022-08-25 16:03:55 +00:00
docs	docs(tvix/eval): add design documentation for attrset opcodes	2022-08-13 15:31:50 +00:00
src	feat(tvix/eval): implement nested '?' operator	2022-08-26 15:06:52 +00:00
.gitignore	feat(tvix/eval): check in generated project skeleton	2022-08-12 12:34:29 +00:00
.skip-subtree	feat(tvix/tests): check in Nix' language test suite	2022-08-24 21:25:41 +00:00
Cargo.lock	feat(tvix/eval): Add initial benchmarking infrastructure	2022-08-25 16:03:55 +00:00
Cargo.toml	feat(tvix/eval): Add initial benchmarking infrastructure	2022-08-25 16:03:55 +00:00
default.nix	chore(tvix/eval): enable test runs in naersk	2022-08-24 23:18:07 +00:00
README.md	docs(tvix/eval): add README note on running the Nix test suite	2022-08-24 23:11:12 +00:00

README.md

Tvix Evaluator

This project implements an interpreter for the Nix programming language.

The interpreter aims to be compatible with nixpkgs, on the foundation of Nix 2.3.

Work on this project is extremely in-progress, and the state of the project in the public repository may not necessarily reflect the state of the private codebase, as we are slowly working on publishing it.

We expect this to have caught up in a handful of weeks (as of 2022-08-12).

Please contact TVL with any questions you might have.

Nix test suite

C++ Nix implements a language test suite in the form of Nix source code files, and their expected output. The coverage of this test suite is not complete, but we intend to be compatible with it.

We have ported the test suite to Tvix, but do not run it by default as we are not yet compatible with it.

You can run the test suite by enabling the nix_tests feature in Cargo.

rnix-parser

Tvix is written in memory of jD91mZM2, the author of rnix-parser who sadly passed away.

Tvix makes heavy use of rnix-parser in its bytecode compiler. The parser is now maintained by Nix community members.