gura
dhall-lang
gura | dhall-lang | |
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7 | 113 | |
122 | 4,137 | |
0.0% | 0.3% | |
0.0 | 6.0 | |
over 1 year ago | 2 months ago | |
TypeScript | Dhall | |
MIT License | BSD 3-clause "New" or "Revised" License |
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gura
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TOML: Tom's Obvious Minimal Language
If one is looking for an alternative config format, the best designed I've seen is https://github.com/gura-conf/gura
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Use TOML for `.env` Files?
I really like the Gura format (https://github.com/gura-conf/gura). Seems to combine the best of yaml, json, and toml for the use case of human created configuration files.
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Typed Config Languages
If we're on the topic of config languages, I'd like to plug Gura (https://github.com/gura-conf/gura). It's not too well-known, but it probably has the best design I've seen, and seems to have a good coverage of languages with an available library.
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Announcing Serde Gura 0.1
The first version of Serde Gura is now available! Gura is a simple and readable configuration language that will be familiar to any YAML and TOML user. Its essence lies in simplicity and was introduced in detail in this post on this subreddit.
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My first crate: a parser for the new config lang Gura
Hi! I've just published a Gura parser written in pure Rust. (Repository link below!) Gura aims to offer a much simpler and more readable alternative to TOML and YAML. If you are familiar with the latter language, learning Gura is easy and intuitive.
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Introducing Gura. A new configuration language readable as YAML, simple as TOML
Cool! There was a mistake and a very important section in README was deleted. We have added a Rationale section where we compare Gura with other languages, as explained there, Gura is not aimed to replace JSON as it's the faster configuration file in the world! But maybe can be able to take advantage of Gura's other benefits :D
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A Gura parser written in Python
Gura is a new configuration language readable as YAML, simple as TOML that supports variables, importing, and has standardized errors (official site | official repo).
dhall-lang
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Apple releases Pkl – onfiguration as code language
Fail to see how this is any different than Dhall (https://dhall-lang.org/) other than it produces plists too.
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Pkl, a Programming Language for Configuration
Kubernetes config is a decent example. I had ChatGPT generate a representative silly example -- the content doesn't matter so much as the structure:
https://gist.github.com/cstrahan/528b00cd5c3a22e3d8f057bb1a7...
Now consider 100s (if not 1000s) of such files.
I haven't given Pkl an in depth look yet, but I can say that the Industry Standard™ of "simple YAML" + string substitution (with delicate, error prone indentation -- since YAML is indentation sensitive) is easily beat by any of:
- https://jsonnet.org/
- https://nickel-lang.org/
- https://nixos.org/manual/nix/stable/language/index.html
- https://dhall-lang.org/
- (insert many more here, probably including Pkl)
- Why the fuck are we templating YAML? (2019)
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Is Htmx Just Another JavaScript Framework?
There are underpowered languages / tools, that can only solve a problem for which they are intended poorly. But not all limited tools are like that.
Say, eBPF is prominently not Turing-complete, which allows to guarantee that a eBPF program terminates, and even how soon. Still eBPF is hugely useful in its area.
Or, say, regular expressions are limited to regular languages; in particular, they famously [1] cannot process recursive structures, like trees. Still tools like grep / ag / rg are mightily useful.
Yes, I agree that YAML is underpowered for proper k8s configuration! But it's also too powerful for its own good in other aspects [2]. I wish Google used Dhall [3] or their own purely functional config language (FCL? I already forgot the name) instead of YAML; sadly, they did not.
[1]: https://stackoverflow.com/a/1732454/223424
[2]: https://ruudvanasseldonk.com/2023/01/11/the-yaml-document-fr...
[3]: https://dhall-lang.org/
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10 Ways for Kubernetes Declarative Configuration Management
Dhall: Dhall is a programmable configuration language that combines features like JSON, functions, types, and import capabilities. Its style leans towards functional programming, so if you're familiar with functional-style languages such as Haskell, you might find Dhall to be quite intuitive.
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Berry is a ultra-lightweight dynamically typed embedded scripting language
I've been thinking along these lines but more 'strongly validated' than statically typed in the sense that you'd be better off being able to load the entire config and then produce a list of problems (and should be able to offer good editor support if done correctly).
Though https://dhall-lang.org/ demonstrates that you can statically type quite a lot of configuration to great advantage, which appears to be programmatically embeddable in multiple languages per https://docs.dhall-lang.org/howtos/How-to-integrate-Dhall.ht...
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What Is the Point of Decidability
> Where practical is in the sense of an engineer (or in their terms, a CS practitioner),
Configuration processing. E.g. I'd like my yamls to be decidable, though I'd settle for guaranteed to halt[1].
[1] https://dhall-lang.org/
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What Is Wrong with TOML?
Maybe you'd like jsonnet: https://jsonnet.org/
I find it particularly useful for configurations that often have repeated boilerplate, like ansible playbooks or deploying a bunch of "similar-but" services to kubernetes (with https://tanka.dev).
Dhall is also quite interesting, with some tradeoffs: https://dhall-lang.org/
A few years ago I did a small comparison by re-implementing one of my simpler ansible playbooks: https://github.com/retzkek/ansible-dhall-jsonnet
- Show HN: FlakeHub – Discover and publish Nix flakes
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Home Blog Better configuration languages – A talk about Dhall [video]
And to checkout Dhall: https://dhall-lang.org/
What are some alternatives?
config - configuration library for JVM languages using HOCON files
cue - CUE has moved to https://github.com/cue-lang/cue
uniffi-rs - a multi-language bindings generator for rust
jsonnet - Jsonnet - The data templating language
gura-rs-parser - A Gura parser for Rust
cue - The home of the CUE language! Validate and define text-based and dynamic configuration
zaml - The Final Form of configuration files
terraform - Terraform enables you to safely and predictably create, change, and improve infrastructure. It is a source-available tool that codifies APIs into declarative configuration files that can be shared amongst team members, treated as code, edited, reviewed, and versioned.
serde-gura - Strongly typed Gura library for Rust
jsonlogic - Go Lang implementation of JsonLogic
strictyaml - Type-safe YAML parser and validator.
nix-gui - Use NixOS Without Coding