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sterni b379e44dfb refactor(3p/lisp/mime4cl): use flexi-streams and binary input 
This refactor is driven by the following (ultimate) aims:

- Get rid of as much of the custom stream code in mime4cl which makes
  less code to maintain in the future.

- Lay the groundwork for correct handling of 8bit transfer encoding:
  The mime4cl we inherited assumes that any MIME message can be decoded
  completely by the CL implementation (in SBCL's case using latin1)
  into CHARACTERs. This is not necessarily the case. flexi-streams
  allows changing how the stream is decoded on the fly and also has
  support for reading the underlying bytes which is perfect for the
  requirements decoding MIME has.

- Since flexi-streams uses trivial-gray-streams, it supports
  READ-SEQUENCE. Taking advantage of this may improve decoding
  performance significantly in the future.

This incurs the following changes:

- Naturally we now open given files as binary files in MIME-MESSAGE.
  Given strings are encoded using STRING-TO-OCTETS and then passed on
  to a new octet vector method. Instead of MY-STRING-INPUT-STREAM this
  now uses flexi-streams' WITH-INPUT-FROM-SEQUENCE.

- OPEN-FILE-PORTION and OPEN-DECODED-FILE-PORTION need to be merged,
  since the transfer encoding not only implies an extra decoder stream
  that needs to be attached after file portion stream, but also imply a
  certain encoding of the stream itself (mostly binary vs. ASCII).
  As flexi-streams can change their encoding on the fly this could be
  untangled again, but it is not strictly necessary.

  As before, we use the DATA slot of the file portion to create a fresh
  stream if possible. Instead of strings we now use an vector of octets
  to match MIME-MESSAGE.

  The actual portioned stream relies on POSITIONED-FLEXI-INPUT-STREAM, a
  subclass of the stock FLEXI-INPUT-STREAM class, described below.

- POSITIONED-FLEXI-INPUT-STREAM replaces DELIMITED-INPUT-STREAM. It is
  created using MAKE-POSITIONED-FLEXI-INPUT-STREAM which accepts the
  same arguments as MAKE-FLEXI-STREAMS and, additionally, :IGNORE-CLOSE.
  A POSITIONED-FLEXI-INPUT-STREAM works the same as an
  FLEXI-INPUT-STREAM, but upon creation, the underlying stream is
  rewinded or forwarded to the argument given by :POSITION using
  FILE-POSITION.

  If :IGNORE-CLOSE is T, a call to CLOSE is not forwarded to the
  underlying stream.

Change-Id: I2d48c769bb110ca0b7cf52441bd63c1e1c2ccd04
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8559
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
2023-05-18 16:14:37 +00:00
.gcroots feat(.envrc): gcroot third_party.sources 2022-09-15 11:27:53 +00:00
.nixery feat(ops/modules): Add module for running Nixery 2021-08-12 14:55:59 +00:00
corp chore(tvix/*): bump to smol_str 0.2.0 2023-05-11 18:19:20 +00:00
docs docs(REVIEWS): update scp command 2023-02-10 15:15:36 +00:00
fun chore(3p/sources): Bump channels & overlays 2022-12-24 12:42:41 +00:00
lisp chore(gerrit): migrate OWNERS files to code-owners style 2022-09-19 11:13:28 +00:00
net chore(3p/sources): Bump channels & overlays 2022-09-28 08:02:31 +00:00
nix feat(nix/lazy-deps): add override pattern for deps 2023-04-24 10:56:40 +00:00
ops feat(ops/terraform/deploy-nixos): make target_user_ssh_key optional 2023-05-16 09:55:23 +00:00
third_party refactor(3p/lisp/mime4cl): use flexi-streams and binary input 2023-05-18 16:14:37 +00:00
tools fix(nixery): allow references to packages starting with numbers 2023-04-29 11:49:02 +00:00
tvix feat(tvix/store/directorysvc): add traverse_to 2023-05-18 06:26:55 +00:00
users feat(grfn/system): Install dropbox on all systems 2023-05-15 14:12:23 +00:00
views fix(views/kit): communicate :unsign in the tvl-kit URL directly 2023-03-31 08:46:01 +00:00
web feat(web/inbox): add landing page for inbox.tvl.su 2022-12-28 08:17:45 +00:00
.envrc feat(.envrc): gcroot third_party.sources 2022-09-15 11:27:53 +00:00
.git-blame-ignore-revs fix: add cl/4397 (treewide nixpkgs-fmt) to git-blame-ignore-revs 2022-02-07 18:15:09 +00:00
.gitignore feat(.envrc): gcroot third_party.sources 2022-09-15 11:27:53 +00:00
.hgignore chore(hgignore): ignore .git for hg 2020-06-14 18:23:13 +00:00
.mailmap chore(mailmap): add my name to mailmap 2020-07-18 18:15:05 +00:00
.rgignore chore: Only exclude //third_party/git from ripgrep 2020-05-17 23:58:22 +01:00
buf.gen.yaml feat(nix/bufCheck): ensure .pb.go is up to date 2022-12-27 13:27:40 +00:00
buf.yaml chore(buf): Use nixpkgs-provided buf 2022-10-21 18:39:03 +00:00
default.nix fix: make depot-gcroot derivation a plain list of out paths 2023-03-08 16:59:08 +00:00
LICENSE chore: another year of licensing 2023-04-09 13:34:18 +00:00
OWNERS chore(gerrit): migrate OWNERS files to code-owners style 2022-09-19 11:13:28 +00:00
README.md docs(README.md): reflect recent upheaval in depot 2022-05-27 23:24:28 +00:00
RULES feat(whitby): Let sterni bear the wheel 2021-05-23 19:06:15 +00:00
rustfmt.toml feat(depotfmt): Check & format Rust code with rustfmt 2022-02-08 12:06:39 +00:00

README.md

depot

Build status

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 from https://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's rules_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 modeline
    • nix-util.el provides editing utilities for Nix files
    • term-switcher.el is an ivy-function for switching between vterm buffers
    • tvl.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.