bcl
pkl
bcl | pkl | |
---|---|---|
7 | 11 | |
14 | 9,661 | |
- | 4.3% | |
9.5 | 9.4 | |
7 days ago | 4 days ago | |
Go | Java | |
GNU General Public License v3.0 or later | Apache License 2.0 |
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bcl
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HCL: Toolkit for Structured Configuration Languages
Another take on replacing HCL with something more sensible:
BCL https://github.com/wkhere/bcl
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Show HN: Togomak – declarative pipeline orchestrator based on HCL and Terraform
I agree with you that HCL sucks when it comes to variables.
Other thing that is funny: no user-defined functions, being unable to use function calls in string interpolations, but allowing variables... so it is like saying: we have this parser and at some points it allows expressions, at some other point not. This seems wrong.
At the same time I agree or at least understand original author's intent to squeeze HCL to maxinum. There is something appealing in HCL visual form, at least when defining resources. Maybe it's just (almost) simplest form of defining such structures that can exists.
This is why I started to work on my own format for configuration, visually similar but with different model of evaluation.
Here is the first attempt: https://github.com/wkhere/bcl
Disclaimer: I named it BCL, 'B' stands for Basic, to somehow relate to HCL and make it easily pronounced. But later I discovered that another BCL is used as Google to configure the Borg platform and seems to be massively hated ;) So I look for the better name..
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Ask HN: Show me your half baked project
I am crafting BCL, own configuration language.
https://github.com/wkhere/bcl
I started this when I was unable to squeeze certain usage patterns from HCL, like: variables living in the same scope as the file, evaluating variables in one pass with parsing, easily using external (environment) variables; plus, a simplified syntax.
The implementation is mostly done: you can defined blocks holding key-value pairs and use numerical, string and bool expressions in them. I will add lists and nested blocks.
At this very moment I am rewriting a parser from yacc-based to a Pratt top-down parser with vm, heavily inspired by the excellent book "Crafting Interpreters".
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That's a Lot of YAML
https://github.com/wkhere/bcl
Will not immediately help for all of YAML usages, but at least for defining resources in a Terraform-like style. In fact, it's already it's already helpful as a replacement for HCL in one internal project, that was a final motivation to hack it.
In a bigger picture, I have no idea how to help with YAML omnipresence in Kubernetes. More than a half of my problems in a $daily_job is how crude is consolidating a final Helm chart from different sources. I am not saying that Helm would be inherently a bad tool or my company has chosen pretty bad way of using it - I guess everyone is doing their best considering the ciscumstances. But manipulating textual templates is just too error prone, and the detection of errors happens too late. I dare to say - Kubernetes would do much better with custom format based on a C-like syntax, instead if trying to prove how cool YAML is, especially when it isn't.
- BCL - a simplified HCL-like configuration format (WIP)
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What Is Wrong with TOML?
Related:
just few days ago I crafted together some ideas i had couple of years already for a configuration language, syntactically like HCL but without HashiCorps idiosyncrasies.
Here it goes, BCL (_Basic_ Configuration Language, for a lack of better name yet), Go prototype, I can code Python port and possibly several other as well..
https://github.com/wkhere/bcl
pkl
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HCL: Toolkit for Structured Configuration Languages
https://github.com/apple/pkl-go/blob/v0.6.0/.circleci/config... seems to imply it's "curl && chmod" so maybe you're thinking of developing pkl itself?
I happened to have a container that I am certain contains no Java and it fired right up
$ docker run -it --rm --entrypoint=/usr/bin/env public.ecr.aws/aws-cli/aws-cli:2.15.38 bash -c 'curl -fsSLO https://github.com/apple/pkl/releases/download/0.25.3/pkl-linux-aarch64; chmod a+x pkl-linux-aarch64; ./pkl-linux-aarch64 --help'
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Exploring Pkl: Apple's Fresh Approach to Configuration Languages
Pkl Official Documentation
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Apple Pkl
Very cool!
You might want to consider also publishing a schema for it too, as a Pkl package. The package can simply be published as a GitHub release (see details in this post here: https://github.com/apple/pkl/discussions/85#discussioncommen...)
- Pkl – opens source configuration language from Apple
- Pkl – A configuration as code language with rich validation and tooling
- Apple/pkl: A configuration as code language with rich validation
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Pkl, a Programming Language for Configuration
At some point, we'll publish more documentation about this, including instructions for how to build your own language binding.
And, it's only a sub-process right now, but we plan on also providing a C library as another way to bind to Pkl.
But if you want to learn more about how this works, feel free to connect with us on GitHub! https://github.com/apple/pkl/discussions
What are some alternatives?
json2jsii - Generates jsii-compatible structs from JSON schemas
hcl - HCL is the HashiCorp configuration language.
yj - CLI - Convert between YAML, TOML, JSON, and HCL. Preserves map order.
dhall-lang - Maintainable configuration files
toml - Tom's Obvious, Minimal Language
jsonnet - Jsonnet - The data templating language
cue - The home of the CUE language! Validate and define text-based and dynamic configuration
TOSIOS - The Open-Source IO Shooter is an open-source multiplayer game in the browser
noyaml - A silly emotional rant about the state of devops tooling/the infrastructure sector in 2018. #noyaml.com