YAML 1.2 Schema support for PyYAML
an invention by tinita
Updated almost 5 years ago. 3 hacker ♥️. 1 follower.

Project Description

PyYAML is a YAML processor in python, and it was one of the first libraries written for YAML. It is used by tools like Ansible or Saltstack.

It was written when YAML 1.1 came out, but was never updated for the new Schema introduced by YAML 1.2.

Look here for an overview of Schemas/Types in YAML 1.1 and 1.2

As you can see there, in YAML 1.1 many strings are recognized as booleans. One promiment one is NO, the country code for Norway, which is read as a boolean False, when unquoted.

This was improved in YAML 1.2 by reducing the number of boolean strings, but so far not implemented by many libraries.

I have been working on a lot of YAML related stuff in the past years, and YAML 1.2 support for PyYAML is something which is requested regularly.

Goal for this Hackweek

I want to add support for the YAML 1.2 Core and JSON Schemas.

Luckily the corresponding test data is already there.

At the end of hackweek, it should be possible to create a PyYAML loader class that loads a YAML 1.2 document.

The branch I'm working on: yaml12

Help

If you are a PyYAML user and know a bit about custom loaders, you can help by discussing the API for the new methods.

You can reach me in our internal chat or in freenode#pyyaml

Resources

Progress

Some weeks ago I already added the test data for the existing YAML 1.1 types, so that adding the tests for the 1.2 Schemas wasn't much work.

I made already progress on Tuesday and Wednesday, so tests are already running successfully, but the challenge now is to create a good API, that is flexible and easy.

On Thursday and Friday I fixed minor issues and updated the related PRs:

Then I created a draft PR:

This will probably take a while until it gets merged (or rejected). Happy for feedback!

Looking for hackers with the skills:

python yaml

This project is part of:

Hack Week 20

Activity

  • almost 5 years ago: enavarro_suse liked this project.
  • almost 5 years ago: cdywan liked this project.
  • almost 5 years ago: okurz liked this project.
  • almost 5 years ago: tinita added keyword "python" to this project.
  • almost 5 years ago: tinita added keyword "yaml" to this project.
  • almost 5 years ago: tinita started this project.
  • almost 5 years ago: tinita originated this project.


    • Comments

    Be the first to comment!

    Similar Projects

    Bring to Cockpit + System Roles capabilities from YAST by miguelpc

    Bring to Cockpit + System Roles features from YAST

    Cockpit and System Roles have been added to SLES 16 There are several capabilities in YAST that are not yet present in Cockpit and System Roles We will follow the principle of "automate first, UI later" being System Roles the automation component and Cockpit the UI one.

    Goals

    The idea is to implement service configuration in System Roles and then add an UI to manage these in Cockpit. For some capabilities it will be required to have an specific Cockpit Module as they will interact with a reasource already configured.

    Resources

    A plan on capabilities missing and suggested implementation is available here: https://docs.google.com/spreadsheets/d/1ZhX-Ip9MKJNeKSYV3bSZG4Qc5giuY7XSV0U61Ecu9lo/edit

    Linux System Roles:

    First meeting Hackweek catchup

    Help Create A Chat Control Resistant Turnkey Chatmail/Deltachat Relay Stack - Rootless Podman Compose, OpenSUSE BCI, Hardened, & SELinux by 3nd5h1771fy

    Description

    The Mission: Decentralized & Sovereign Messaging

    FYI: If you have never heard of "Chatmail", you can visit their site here, but simply put it can be thought of as the underlying protocol/platform decentralized messengers like DeltaChat use for their communications. Do not confuse it with the honeypot looking non-opensource paid for prodect with better seo that directs you to chatmailsecure(dot)com

    In an era of increasing centralized surveillance by unaccountable bad actors (aka BigTech), "Chat Control," and the erosion of digital privacy, the need for sovereign communication infrastructure is critical. Chatmail is a pioneering initiative that bridges the gap between classic email and modern instant messaging, offering metadata-minimized, end-to-end encrypted (E2EE) communication that is interoperable and open.

    However, unless you are a seasoned sysadmin, the current recommended deployment method of a Chatmail relay is rigid, fragile, difficult to properly secure, and effectively takes over the entire host the "relay" is deployed on.

    Why This Matters

    A simple, host agnostic, reproducible deployment lowers the entry cost for anyone wanting to run a privacy‑preserving, decentralized messaging relay. In an era of perpetually resurrected chat‑control legislation threats, EU digital‑sovereignty drives, and many dangers of using big‑tech messaging platforms (Apple iMessage, WhatsApp, FB Messenger, Instagram, SMS, Google Messages, etc...) for any type of communication, providing an easy‑to‑use alternative empowers:

    • Censorship resistance - No single entity controls the relay; operators can spin up new nodes quickly.
    • Surveillance mitigation - End‑to‑end OpenPGP encryption ensures relay operators never see plaintext.
    • Digital sovereignty - Communities can host their own infrastructure under local jurisdiction, aligning with national data‑policy goals.

    By turning the Chatmail relay into a plug‑and‑play container stack, we enable broader adoption, foster a resilient messaging fabric, and give developers, activists, and hobbyists a concrete tool to defend privacy online.

    Goals

    As I indicated earlier, this project aims to drastically simplify the deployment of Chatmail relay. By converting this architecture into a portable, containerized stack using Podman and OpenSUSE base container images, we can allow anyone to deploy their own censorship-resistant, privacy-preserving communications node in minutes.

    Our goal for Hack Week: package every component into containers built on openSUSE/MicroOS base images, initially orchestrated with a single container-compose.yml (podman-compose compatible). The stack will:

    • Run on any host that supports Podman (including optimizations and enhancements for SELinux‑enabled systems).
    • Allow network decoupling by refactoring configurations to move from file-system constrained Unix sockets to internal TCP networking, allowing containers achieve stricter isolation.
    • Utilize Enhanced Security with SELinux by using purpose built utilities such as udica we can quickly generate custom SELinux policies for the container stack, ensuring strict confinement superior to standard/typical Docker deployments.
    • Allow the use of bind or remote mounted volumes for shared data (/var/vmail, DKIM keys, TLS certs, etc.).
    • Replace the local DNS server requirement with a remote DNS‑provider API for DKIM/TXT record publishing.

    By delivering a turnkey, host agnostic, reproducible deployment, we lower the barrier for individuals and small communities to launch their own chatmail relays, fostering a decentralized, censorship‑resistant messaging ecosystem that can serve DeltaChat users and/or future services adopting this protocol

    Resources

    Enhance git-sha-verify: A tool to checkout validated git hashes by gpathak

    Description

    git-sha-verify is a simple shell utility to verify and checkout trusted git commits signed using GPG key. This tool helps ensure that only authorized or validated commit hashes are checked out from a git repository, supporting better code integrity and security within the workflow.

    Supports:

    • Verifying commit authenticity signed using gpg key
    • Checking out trusted commits

    Ideal for teams and projects where the integrity of git history is crucial.

    Goals

    A minimal python code of the shell script exists as a pull request.

    The goal of this hackweek is to:

    • DONE: Add more unit tests
      • New and more tests can be added later
    • Partially DONE: Make the python code modular
    • DONE: Add code coverage if possible

    Resources

    Liz - Prompt autocomplete by ftorchia

    Description

    Liz is the Rancher AI assistant for cluster operations.

    Goals

    We want to help users when sending new messages to Liz, by adding an autocomplete feature to complete their requests based on the context.

    Example:

    • User prompt: "Can you show me the list of p"
    • Autocomplete suggestion: "Can you show me the list of p...od in local cluster?"

    Example:

    • User prompt: "Show me the logs of #rancher-"
    • Chat console: It shows a drop-down widget, next to the # character, with the list of available pod names starting with "rancher-".

    Technical Overview

    1. The AI agent should expose a new ws/autocomplete endpoint to proxy autocomplete messages to the LLM.
    2. The UI extension should be able to display prompt suggestions and allow users to apply the autocomplete to the Prompt via keyboard shortcuts.

    Resources

    GitHub repository

    Improve/rework household chore tracker `chorazon` by gniebler

    Description

    I wrote a household chore tracker named chorazon, which is meant to be deployed as a web application in the household's local network.

    It features the ability to set up different (so far only weekly) schedules per task and per person, where tasks may span several days.

    There are "tokens", which can be collected by users. Tasks can (and usually will) have rewards configured where they yield a certain amount of tokens. The idea is that they can later be redeemed for (surprise) gifts, but this is not implemented yet. (So right now one needs to edit the DB manually to subtract tokens when they're redeemed.)

    Days are not rolled over automatically, to allow for task completion control.

    We used it in my household for several months, with mixed success. There are many limitations in the system that would warrant a revisit.

    It's written using the Pyramid Python framework with URL traversal, ZODB as the data store and Web Components for the frontend.

    Goals

    • Add admin screens for users, tasks and schedules
    • Add models, pages etc. to allow redeeming tokens for gifts/surprises
    • …?

    Resources

    tbd (Gitlab repo)