starlark
ytt
starlark | ytt | |
---|---|---|
22 | 14 | |
2,238 | 1,589 | |
1.9% | 1.2% | |
4.1 | 7.0 | |
3 days ago | 14 days ago | |
Starlark | Go | |
Apache License 2.0 | Apache License 2.0 |
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starlark
- (The) Starlark Language
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Apple releases Pkl – onfiguration as code language
The implementations and users page mentioned above:
https://github.com/bazelbuild/starlark/blob/master/users.md
- Language design of Starlark (compared to Python)
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10 Ways for Kubernetes Declarative Configuration Management
Starlark: Starlark is a language for describing build transformations, inspired by Python, but with features that make it suitable for embedding in software like Bazel. It can be used for configuration generation due to its capability for deterministic evaluation and expressing complex build transformations.
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How Big Should a Programming Language Be?
In the design of Starlark (https://github.com/bazelbuild/starlark), I often had to push back against new feature requests to keep the language simple. I explicitly listed simplicity as a design goal.i
Of course, the scope of the language is not the same as general purpose languages, but there's always pressure from the users to add more things. I also think many people underestimate the cost of adding new features: it's not just about adding the code in every compiler/interpreter, specifying every edge-case in a spec, updating all the tooling for the language and writing tutorials; it's also a cost on everyone who will have to read any of the code.
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Launch HN: Moonrepo (YC W23) – Open-source build system
one of the benefits of starlark (unlike python): "Starlark is suitable for use in highly parallel applications. An application may invoke the Starlark interpreter concurrently from many threads, without the possibility of a data race, because shared data structures become immutable due to freezing." from https://github.com/bazelbuild/starlark/blob/master/spec.md - it's not python, you can't do recursion (!) and it's more limited (you can't read a file in bazel, and parse it, you have to make this operation into the graph somehow)
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When to use Bazel?
You can do the same in Bazel which uses Starlark for its BUILD files. Starlark is a dialect of Python so it makes it super easy to work with.
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[P] Docker alternative for AI/ML
Make sense. We do not use Python actually, the build language is starlark, which is the config lang used by bazel. https://github.com/bazelbuild/starlark
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The Dhall Configuration Language
Have you seen Starlark? It's not too far from that, but safer in a number of ways: https://github.com/bazelbuild/starlark
- What change should Python 4 bring, in your opinion?
ytt
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10 Ways for Kubernetes Declarative Configuration Management
YTT - YTT is a templating tool that understands YAML structure. It helps you easily configure complex software via reusable templates and user provided values using the Starlark language.
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Alternatives to Helm/Kustomize for complex Kubernetes Deployments
Adding https://carvel.dev/ytt/ to the list. I was happy using this tool as IMO it mixes good things from Helm and Kustomize, however the syntax is ugly and repelling my colleagues to have a closer look.
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The YAML Document from Hell
> Templating yaml is a terrible, terrible idea
I've had a good time using ytt: https://carvel.dev/ytt/. It implements language-aware templating, which is IMO the only reasonable way to do it.
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Creating Kubernetes Templates
`ytt` is part of the Carvel toolchain. https://carvel.dev/ytt/
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Dealing with YAML overload
I agree with you on `you will want to see just plain texts instead of a bunch of templating token with hidden logic.` Which is why I think https://carvel.dev/ytt/ would be great. We could generate these templates in pipelines, or we could just make it easier to maintain what we have.
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How to handle the lifecycle of multiple COTS
For more advanced configuration management you might be interested in ytt ( https://carvel.dev/ytt/ ) which is a "yaml-aware" templating tool. it lets you do "patches" via an overlay mechanism to add or remove specific yaml blocks, and it also lets you use a simplified python dialect for more complicated logic. With ytt you would put your DNS IP into a "data values" file and then run ytt to render it into the configs before handing them off to the deployment tool. e.g. `ytt -f | kubectl apply`
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The Dhall Configuration Language
I said this above as well: ytt (https://carvel.dev/ytt/) lets you embed starlark into valid yaml, among other cute tricks for managing biz-logic in configs.
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ArgoCD Instance per kubernetes cluster? (staging and prod)
Manifests are generated with ytt (https://carvel.dev/ytt/).
- Dynamically creating yaml manifests?
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YAML and Configuration Files
This is why you should consider https://carvel.dev/ytt/
What are some alternatives?
yaml-reference-parser
kustomize - Customization of kubernetes YAML configurations
dhall - Maintainable configuration files
cue - CUE has moved to https://github.com/cue-lang/cue
dhall-kubernetes - Typecheck, template and modularize your Kubernetes definitions with Dhall
tanka - Flexible, reusable and concise configuration for Kubernetes
starlark-go - Starlark in Go: the Starlark configuration language, implemented in Go
strictyaml - Type-safe YAML parser and validator.
openapi-python-client - Generate modern Python clients from OpenAPI
hull - The incredible HULL - Helm Uniform Layer Library - is a Helm library chart to improve Helm chart based workflows
cdk8s - Define Kubernetes native apps and abstractions using object-oriented programming
yaml-rust - A pure rust YAML implementation.