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William Carroll d100c1f49f feat(wpcarro/ava): Support earlyoom 
Strange start to my Monday where I spent ~2h debugging my hanging
NixOS. Strangely I'm not sure I made any changes to my configuration to trigger
this, and I was finding this hard to reproduce:
- graphical X sessions hung (once when opening Chrome)
- TTYs hung (during `nix-build` and `rebuild-system`)

Per kn's recommendations whenever a system is hanging, see if it's reachable
over the network (e.g. SSH). Since I didn't have my laptop, I downloaded Termius
on my iPhone, which I used to mosh into ava, which is a surprisingly nice UX.

I suspect my machine (with only 8GB of RAM) was OOMing, but I'm not
certain. Thanks to grfn I installed `earlyoom`. For more commentary, check-out
Profpatsch's blog post about this: https://profpatsch.de/notes/preventing-oom

What went well:
- Thankfully I installed a Matrix client on my iPhone last week, which allowed
  me to troubleshoot with the #tvl folks

AIs:
- I'd like some instrumentation like Prometheus, Loki (`journald`, `dmesg`), so
  that I can accumulate troubleshooting information that isn't destroyed when I
  reboot my machine (which I did 1/2-dozen times today).
- Consider adding `git` metadata to `system.nixos.label` to get more useful
  information in a GRUB/EFI context.

More unknowns:
- Why can't I switch back to EFI (from GRUB) for my bootloader?

Change-Id: Ie2a5a15f5c0ead346d50e331fa2937f8f3453960
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5625
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
2022-05-26 16:48:53 +00:00
.nixery feat(ops/modules): Add module for running Nixery 2021-08-12 14:55:59 +00:00
corp style: format entire depot with nixpkgs-fmt 2022-01-31 16:11:53 +00:00
docs docs(CONTRIBUTING): Mention new subtree commit type 2021-11-30 22:42:34 +00:00
fun chore(paroxysm): Bump dependencies within constraints 2022-05-19 14:46:28 +00:00
lisp feat(nix/buildLisp): add ecl 2021-08-24 22:00:15 +00:00
net chore(alcoholic_jwt): prepare release v4091 2022-05-16 18:53:30 +00:00
nix chore(nix/utils): Comment out tests for detection-ish of symlinks 2022-05-26 16:44:52 +00:00
ops refactor(ops/nixos): Prepare for restricted eval 2022-05-26 16:24:34 +00:00
third_party refactor(3p): Prepare for restricted-eval 2022-05-26 14:17:32 +00:00
tools chore(nixery): Bump Go dependencies 2022-05-26 10:05:55 +00:00
tvix style(rust): Format all Rust code with rustfmt 2022-02-08 12:06:39 +00:00
users feat(wpcarro/ava): Support earlyoom 2022-05-26 16:48:53 +00:00
views feat(tvl-kit): Expose lazy-deps 2022-05-02 23:34:55 +00:00
web chore(web/converse): Bump dependencies 2022-04-17 13:16:34 +00:00
.envrc fix(.envrc): Add /bin to the PATH of our lazy dispatch 2022-05-07 12:14:13 +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 chore(gitignore): Ignore garbage/ folder 2019-12-20 20:05:40 +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.yaml feat(buf.yaml): add protobuf linter config 2020-07-17 20:01:29 +00:00
default.nix style: format entire depot with nixpkgs-fmt 2022-01-31 16:11:53 +00:00
LICENSE docs(readTree): Add SPDX license header on readTree 2021-04-12 13:56:44 +00:00
OWNERS feat(depot): Add grfn and sterni to top-level owners 2021-12-10 18:11:16 +03:00
README.md chore(nixery): Housekeeping for depot compatibility 2022-04-20 15:31:16 +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 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/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.
  • //third_party/nix contains our fork of the Nix package manager.

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/tazjin/homepage && //users/tazjin/blog: A Nix-based static site generator which generates the web page and Atom feed for tazj.in
  • //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.