History

Vincent Ambo 39b01c3029 fix(tvix/eval): correctly escape `${` in strings Without this escape, it is possible for Nix to produce escaped representations which are not literal Nix values again. This was fixed in upstream Nix in https://github.com/NixOS/nix/pull/4012 (though only for eval, not in the REPL) and the updated test is picked from upstream after that commit. Because we run the C++ Nix tests against our test suite as well, this also bumps our custom Nix 2.3 to a commit that includes the cherry-picked fix from the PR above. Change-Id: I478547ade65f655c606ec46f7143932064192283 Reviewed-on: https://cl.tvl.fyi/c/depot/+/6271 Reviewed-by: grfn <grfn@gws.fyi> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI		2022-09-03 00:47:58 +00:00
..
benches	fix(tvix/eval): Fix build of benchmarks	2022-09-02 19:10:34 +00:00
docs	docs(tvix/eval): add an overview of all builtins in Nix	2022-09-02 12:59:23 +00:00
src	fix(tvix/eval): correctly escape `${` in strings	2022-09-03 00:47:58 +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	chore(tvix/eval): bump rnix-parser to latest master	2022-09-01 17:41:22 +00:00
Cargo.toml	chore(tvix/eval): bump rnix-parser to latest master	2022-09-01 17:41:22 +00:00
default.nix	chore(tvix/eval): Build with --all-targets	2022-09-02 19:10:45 +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.