35 lines
803 B
Rust
35 lines
803 B
Rust
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//! This program demonstrates deserialising some configuration
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//! structure from Nix code that makes use of nixpkgs.lib
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//!
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//! This example does not add the full set of Nix features (i.e.
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//! builds & derivations).
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use serde::Deserialize;
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#[derive(Debug, Deserialize)]
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struct Config {
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host: String,
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port: usize,
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}
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fn main() {
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let code = r#"
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let
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lib = import <nixpkgs/lib>;
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host = lib.strings.concatStringsSep "." ["foo" "example" "com"];
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in {
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inherit host;
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port = 4242;
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}
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"#;
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let result = tvix_serde::from_str_with_config::<Config, _>(code, |eval| {
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eval.enable_impure(None);
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});
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match result {
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Ok(cfg) => println!("Config says: {}:{}", cfg.host, cfg.port),
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Err(e) => eprintln!("{:?} / {}", e, e),
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}
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}
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