dhall-lang
json5
Our great sponsors
dhall-lang | json5 | |
---|---|---|
113 | 94 | |
4,124 | 6,244 | |
1.3% | 1.0% | |
6.0 | 0.0 | |
27 days ago | 4 months ago | |
Dhall | JavaScript | |
BSD 3-clause "New" or "Revised" License | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
dhall-lang
-
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.
Well, Dhall provides something between JSON and a Turing complete language that can make a lot of configuration much quicker to write, if you can hack the functional syntax.
-
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://nixos.org/manual/nix/stable/language/index.html
- (insert many more here, probably including Pkl)
-
Why the fuck are we templating YAML? (2019)
Indeed why? However the conclusion I have is not to use JSON but to use a type safe configuration language that can express my intent much better making illegal states impossible. One example of such lang is Dhall.
Throwing in a plug for https://dhall-lang.org/
> Dhall is a programmable configuration language that you can think of as: JSON + functions + types + imports
-
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...
-
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.
-
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...
-
What Is Wrong with TOML?
I agree, I quite like https://dhall-lang.org/ for that reason. It strikes a good balance between features and being a config language.
json5
-
Why the fuck are we templating YAML? (2019)
Is the list on their website not good? https://github.com/json5/json5/wiki/In-the-Wild
And it shouldn't take much to modify an existing JSON parser.
-
I pre-released my project "json-responder" written in Rust
JSON5 support
-
topoconfig: enhancing config declarations with graphs
Meanwhile, formats have been evolving (JSON5, YAML), config entry points are constantly changing. These fluctuations, fortunately, were covered by tools like the cosmiconfig.
-
That's a Lot of YAML
I think JSON5 is fairly close to this: https://json5.org
I reckon the only thing it's missing to be truly accessible to non-techies is that string values still need to be quoted, i.e. you can't have:
key: this is my value
(I'm definitely not saying it would be a good idea to allow quotes to be dropped, just that that's the only potential stumbling block I see for non-techies.)
-
XML is better than YAML
I believe that's JSON5.
https://github.com/json5/json5
It's my preferred configuration file format, it fixes all the problems I have with JSON (trailing commas, comments) without turning it into a mess full of gotchas like YAML.
Might be interesting to check out json5.
- Fx – Terminal JSON Viewer
-
What Is Wrong with TOML?
I can relate. But after using JSON for a while (in files that I edit by hand), I realised that I really wanted comments and trailing commas (which leads to https://nigeltao.github.io/blog/2021/json-with-commas-commen...). Next I'd probably want multiline strings (leading to https://github.com/json5/json5).
But if you use those extensions, all your tooling breaks.
I think the real bike-shedding would start when you want to add some syntax for raw string literals (e.g. heredocs); it's one of those features that feels redundant, until the day when you really need it and can't bear the pain of escaping.
What are some alternatives?
Json.NET - Json.NET is a popular high-performance JSON framework for .NET
cue - CUE has moved to https://github.com/cue-lang/cue
hjson-js - Hjson for JavaScript
jq - Command-line JSON processor [Moved to: https://github.com/jqlang/jq]
jsonnet - Jsonnet - The data templating language
toml - Tom's Obvious, Minimal Language
cue - The home of the CUE language! Validate and define text-based and dynamic configuration
sublime-hjson - Hjson support for Sublime Text
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.
jsonlogic - Go Lang implementation of JsonLogic
ron - Rusty Object Notation