40 lines
1.4 KiB
Rust
40 lines
1.4 KiB
Rust
use anyhow::{Context, Result};
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use command_run::{Command, LogTo};
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use std::fmt::Display;
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use std::path::PathBuf;
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use crate::data::Flake;
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/// Uses `nix` to fetch the provided flake and read general information
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/// about it using `nix flake info`
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pub fn get_flake_info<T: AsRef<str> + Display>(
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flake_ref: T,
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temp_store: bool,
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extra: &[String],
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) -> Result<Flake> {
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let args = ["flake", "info", "--json", "--no-write-lock-file"].iter();
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let mut command = Command::with_args("nix", args);
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let command = command.add_arg(flake_ref.as_ref());
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if temp_store {
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let temp_store_path = PathBuf::from("/tmp/flake-info-store");
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if !temp_store_path.exists() {
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std::fs::create_dir_all(&temp_store_path)
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.with_context(|| "Couldn't create temporary store path")?;
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}
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command.add_arg_pair("--store", temp_store_path.canonicalize()?);
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}
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command.add_args(extra);
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let mut command = command.enable_capture();
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command.log_to = LogTo::Log;
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command.log_output_on_error = true;
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command
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.run()
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.with_context(|| format!("Failed to gather information about {}", flake_ref))
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.and_then(|o| {
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let deserialized: Result<Flake, _> =
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serde_json::de::from_str(o.stdout_string_lossy().to_string().as_str());
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Ok(deserialized?.resolve_name())
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})
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}
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