Top 10 Rust Configuration Projects

config-rs

5 1,951 5.7 Rust

⚙️ Layered configuration system for Rust applications (with strong support for 12-factor applications).

Project mention: Is there a pydantic.BaseSettings equivalent in rust? | /r/rust | 2023-06-05

Consider config crate. It could be like:
nickel

15 1,493 9.7 Rust

Better configuration for less

Project mention: Announcing Nickel 1.0, a configuration language written in (and usable from) Rust | /r/rust | 2023-06-08

The LSP is aware of contracts (and the rest of the tooling, in particular `nickel query`) and is able to show "types" (really contracts), documentation, provide completion and so on. You can take a look at a simple Kubernetes example here: https://github.com/tweag/nickel/blob/master/examples/record-contract/record-contract.ncl
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confy

2 729 0.0 Rust

🛋 Zero-boilerplate configuration management in Rust

Project mention: How do you manage configuration in rust? | /r/rust | 2022-12-15

I'd really recommend confy! It does exactly what you seem to want and supports YAML, TOML, and RON :)
kcl

36 566 10.0 Rust

A constraint-based record & functional language mainly used in configuration and policy scenarios.

Project mention: Show HN: The KCL Programming Language for DevOps | news.ycombinator.com | 2023-06-07
dotter

3 566 6.4 Rust

A dotfile manager and templater written in rust 🦀

Project mention: What "nice-to-have" CLI tools do you know? | /r/linuxquestions | 2023-02-14

dotter-rs -- config manager with templates
emplace

1 214 5.2 Rust

👩‍❤️‍💋‍👩 Synchronize installed packages on multiple machines

Project mention: Ask HN: How do you manage dotfiles and provision machines? | news.ycombinator.com | 2023-05-26

Probably true but as an aging and burned out dev I really hoped that there would be some ready and baked solutions by mid-2023, you know.
It's actually quite the glaring hole in dev tooling. Everyone formulating their own cloud or GIT synced adhoc scripts is a huge waste of energy IMO!
Guess I'll have to start allocating time and check out Ansible, Chef and Puppet (I heard they can do OS- and distro-agnostic package management which sounds promising). Or, since I have no plans to use Windows for anything except gaming ever again and will stick to Macs and Linux machines, then I'll just carefully compose a few bash/zsh scripts with some package manager shims and command/arguments translation and nail that and use it to my grave.
Still, I really expected dev tooling to be better. It's weird how each one of us has to invent their own package syncing manager.
The only tool I was able to find is https://github.com/tversteeg/emplace -- but I am still fighting with it and I can't even make it use config file on a custom location, and it does seem semi-defunct. Will research it a bit, still have hope it'll work but likely not. Oh well.
confique

2 117 10.0 Rust

Type-safe, layered, light-weight, `serde`-based configuration library

Project mention: Confique 0.2.0 released: a type-safe, layered configuration library | /r/rust | 2022-10-21

I also thought about some form of integration with clap. Confique currently doesn't but yeah, it sounds like something I could add. I have to properly explore the design space there first. I created an issue on that topic: https://github.com/LukasKalbertodt/confique/issues/19
InfluxDB

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autokernel

2 74 10.0 Rust

A tool for managing your kernel configuration that guarantees semantic correctness

Project mention: autokernel 2.0.1 | A kernel configuration tool that guarantees semantic correctness | /r/linux | 2022-11-14
cvars

1 36 10.0 Rust

Configuration variables and consoles for games in Rust. An alternative to inline_tweak / const-tweaker with different tradeoffs.

Project mention: test | /r/Test_Posts | 2023-02-07
cfg-rs

1 36 4.4 Rust

A Configuration Library for Rust Applications

Project mention: [Renew ANN] cfg-rs 0.2.8 | /r/rust | 2022-07-01

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-06-08.