Description:
Better configuration for less
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Type: Formula
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Latest Version: 1.15.1@0
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Tracked Since: Dec 11, 2025
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Links:
Homepage |
formulae.brew.sh
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Category: Developer tools
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Tags:
configuration
language
nix
devops
json
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Install:
brew install nickel
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About:
Nickel is a configuration language designed for correctness, performance, and maintainability. It provides a powerful type system and composable modules to manage complex configurations, preventing common errors found in formats like JSON or YAML. The language compiles to a compact representation for fast evaluation and easy integration.
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Key Features:
- Strong, static type system with type inference
- Composability via records and merge operators
- Lazy evaluation for efficient configuration generation
- Gradual typing for flexible interoperability
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Use Cases:
- Managing complex infrastructure-as-code configurations
- Generating type-safe configuration files for applications
- Validating and structuring large data sets
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Alternatives:
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Dhall
– Both are programmable configuration languages, but Nickel focuses on performance and a more intuitive merge operation for composable configs.
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JSON
– Nickel adds logic, types, and composability to the basic data structures of JSON.
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