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jk
- Jsonnet – The Data Templating Language
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The Curse of NixOS
People have tried: https://github.com/jkcfg/jk
But yeah I agree. The thing is, if all you need is robust determinism why do you need a full functional language with currying and other complex concepts?
Google had the same problem for Bazel, and their solution (Starlark) is way easier to understand.
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Pants vs. Bazel: Why Pants may be the right choice for your team
If I were writing a build system today (and I did just write one actually to test out some ideas) I would use Typescript for the language with something like jk to provide hermeticity. Typescript has many advantages, especially over Python, but mainly:
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The Perfect Configuration Format? Try TypeScript
It's possible to sandbox most languages, and with some work you can probably make them deterministic too.
Here's an example: https://github.com/jkcfg/jk
That beats having to learn an entirely new language.
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Cue: A new language for data validation
Maybe Javascript? A lot of web tools support Javascript config files. There's this nice-looking effort to provide a hermetic execution environment for them: https://github.com/jkcfg/jk and if you use Typescript you get an extremely good static type system too. Plus the language is already very well known with loads of tool support and documentation.
Definitely what I would use today.
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What is the difference between JSON and YAML?
If you think "but I need conditionals and file inclusion and ..." then maybe consider just allowing a full programming language instead. Someone pointed me to jk which looks like it is heading in the right direction, except that it outputs YAML by default for some insane reason.
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Boa release v0.13
You may be interested in jk. If you don't want to use a special purpose configuration language (jsonnet, cue, dhall, etc), this is a nice alternative that uses js in a hermetic runtime (but see their open issues for progress on that). They seem to also be adding native typescript support so you could even have type checking built-in.
nvd
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First post, here's my home lab and how I use it every day (running Proxmox and NixOS)
And this repo:https://gitlab.com/khumba/nvd
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The Curse of NixOS
There's nothing there that needs flakes (an experimental feature which people should not enable without understanding the implications). You could build a system derivation and run a diff against /run/current-system on it.
For what it's worth, nix-diff has very verbose output (it literally diffs everything that is different in the inputs & outputs). A slightly nicer way to diff systems is nvd[0] (example output[1]) which only shows version changes and added/removed packages.
[0]: https://gitlab.com/khumba/nvd
[1]: https://deploys.tvl.fyi/diff/4xmyvkr9nw0cwkn5q38p0cfc58x3jdy...
- Nix/NixOS package version diff tool
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Can I see what packages have been updated?
And it uses https://gitlab.com/khumba/nvd to diff the revisions
What are some alternatives?
vm2 - Advanced vm/sandbox for Node.js
nix-config - Mirror of http://chriswarbo.net/git/nix-config
dhall-lang - Maintainable configuration files
nixos-config - Nix configuration for macOS / NixOS with starter templates, step-by-step guides, and more ✨
pants - The Pants Build System
nix-fpga-tools
hof - Framework that joins data models, schemas, code generation, and a task engine. Language and technology agnostic.
nix-helpers - Mirror of http://chriswarbo.net/git/nix-helpers.git
FlatBuffers - FlatBuffers: Memory Efficient Serialization Library
nixpkgs-config - ~/.config/nixpkgs
jsonnet - Jsonnet - The data templating language
nixos-beginners-handbook - The missing handbook for NixOS beginners