49b34183e3
This commit rewrites Thunk::force() so that it is not (directly) self-recursive. It maintains a Vec of all the previously-encountered thunks which point to the one it is currently forcing, rather than recursively calling itself. Benefits: - Short term: This commit saves the cost of a round-trip through the generator machinery for the generators::request_force() which is removed by this commit. - Medium term: Once a similar transformation has been applied to nix_cmp(), nix_add(), nix_eq(), and coerce_to_string(), those four functions, along with Thunk::force(), will make non-tail calls only to each other. They can then be merged into a single tail-recursive function which does not use the generator machinery at all: enum Task { Cmp, Add, Eq, CoerceToString, Force}; fn Value::walk(task:Task, v1:Value, v2:Value) { // ... - Long term: The long-term goal here is to use generators **only for builtins** and [Marionette]-style remote control of the VM. In other words: use `async` for things that actually involve concurrency. Calls from the VM to builtins can then be blocking calls, because even cppnix will overflow the stack if you make a MAX_STACK_DEPTH-deep recursive call which passes through a builtin at every stack frame (e.g. `{ func = builtins.sort (a: b: ... func ...) ...}`). This way the inner "tight loop" of the interpreter doesn't pay the costs of `async` and generators. These costs manifest in terms of: performance, complex nonlocal control flow, and language impediments (async Rust is a restricted subset of real Rust, and is missing things like traits). [Marionette]: https://firefox-source-docs.mozilla.org/testing/marionette/Intro.html Change-Id: I6179b8abb2ea0492180fcb347f37595a14665777 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10039 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI |
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.gcroots | ||
.nixery | ||
corp | ||
docs | ||
fun | ||
lisp | ||
net | ||
nix | ||
ops | ||
third_party | ||
tools | ||
tvix | ||
users | ||
views | ||
web | ||
.envrc | ||
.git-blame-ignore-revs | ||
.gitignore | ||
.hgignore | ||
.mailmap | ||
.rgignore | ||
buf.gen.yaml | ||
buf.yaml | ||
default.nix | ||
LICENSE | ||
OWNERS | ||
README.md | ||
RULES | ||
rustfmt.toml |
depot
This repository is the monorepo for the community around The Virus Lounge, containing our personal tools and infrastructure. Everything in here is built using Nix.
A large portion of the software here is very self-referential, meaning that it exists to sustain the operation of the repository. This is the case because we partially see this as an experiment in tooling for monorepos.
Highlights
Services
-
Source code is available primarily through Sourcegraph on cs.tvl.fyi, where it is searchable and even semantically indexed. A lower-tech view of the repository is also available via cgit-pink on code.tvl.fyi.
The repository can be cloned using
git
fromhttps://cl.tvl.fyi/depot
. -
All code in the depot, with the exception of code that is checked in to individual
//users
folders, needs to be reviewed. We use Gerrit on cl.tvl.fyi for this. -
Issues are tracked via our own issue tracker on b.tvl.fyi. Its source code lives at
//web/panettone/
. -
Smaller todo-list entries which do not warrant a separate issue are listed at todo.tvl.fyi.
-
We use Buildkite for CI. Recent builds are listed on tvl.fyi/builds and pipelines are configured dynamically via
//ops/pipelines
. -
A search service that makes TVL services available via textual shortcuts is available: atward
All services that we host are deployed on NixOS machines that we manage. Their
configuration is tracked in //ops/{modules,machines}
.
Nix
//nix/readTree
contains the Nix code which automatically registers projects in our Nix attribute hierarchy based on their in-tree location//tools/nixery
contains the source code of Nixery, a container registry that can build images ad-hoc from Nix packages//nix/yants
contains Yet Another Nix Type System, which we use for a variety of things throughout the repository//nix/buildGo
implements a Nix library that can build Go software in the style of Bazel'srules_go
. Go programs in this repository are built using this library.//nix/buildLisp
implements a Nix library that can build Common Lisp software. Currently only SBCL is supported. Lisp programs in this repository are built using this library.//web/blog
and//web/atom-feed
: A Nix-based static site generator which generates the web page and Atom feed for tazj.in (//users/tazjin/homepage
) and tvl.fyi (//web/tvl
)//web/bubblegum
contains a CGI-based web framework written in Nix.//nix/nint
: A shebang-compatible interpreter wrapper for Nix.//tvix
contains initial work towards a modular architecture for Nix.
We have a variety of other tools and libraries in the //nix
folder which may
be of interest.
Packages / Libraries
//net/alcoholic_jwt
contains an easy-to-use JWT-validation library for Rust//net/crimp
contains a high-level HTTP client using cURL for Rust//tools/emacs-pkgs
contains various useful Emacs libraries, for example:dottime.el
provides dottime in the Emacs modelinenix-util.el
provides editing utilities for Nix filesterm-switcher.el
is an ivy-function for switching between vterm bufferstvl.el
provides helper functions for interacting with the TVL monorepo
//lisp/klatre
provides a grab-bag utility library for Common Lisp
User packages
Contributors to the repository have user directories under
//users
, which can be used for
personal or experimental code that does not require review.
Some examples:
//users/grfn/xanthous
: A (WIP) TUI RPG, written in Haskell.//users/tazjin/emacs
: tazjin's Emacs & EXWM configuration//users/tazjin/finito
: A persistent finite-state machine library for Rust.
Licensing
Unless otherwise stated in a subdirectory, all code is licensed under the MIT license. See LICENSE for details.
Contributing
If you'd like to contribute to any of the tools in here, please check out the contribution guidelines and our code of conduct.
IRC users can find us in #tvl
on hackint, which is also
reachable via XMPP at #tvl@irc.hackint.org
(sic!).
Hackint also provide a web chat.