5f62cd1ad5
This is an example, which uses the debug trait to print all field values. Silence the compiler warning about unused fields. Change-Id: I5f1216c77819003302e83ba1af1ff13c924f3b38 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7971 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de>
35 lines
1 KiB
Rust
35 lines
1 KiB
Rust
//! This program demonstrates how to use tvix_serde to deserialise
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//! program configuration (or other data) from Nix code.
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//!
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//! This makes it possible to use Nix as an embedded config language.
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//! For greater control over evaluation, and for features like adding
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//! additional builtins, depending directly on tvix_eval would be
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//! required.
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use serde::Deserialize;
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use std::collections::HashMap;
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#[derive(Debug, Deserialize)]
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enum Flavour {
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Tasty,
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Okay,
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Eww,
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}
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#[allow(dead_code)]
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#[derive(Debug, Deserialize)]
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struct Data {
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name: String,
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foods: HashMap<String, Flavour>,
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}
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fn main() {
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// Get the content from wherever, read it from a file, receive it
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// over the network - whatever floats your boat! We'll include it
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// as a string.
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let code = include_str!("foods.nix");
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// Now you can use tvix_serde to deserialise the struct:
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let foods: Data = tvix_serde::from_str(code).expect("deserialisation should succeed");
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println!("These are the foods:\n{:#?}", foods);
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}
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