Pretty errors (#9)

crates/cli/Cargo.toml

@@ -9,8 +9,9 @@ humanode-distribution-installer = { path = "../installer" }
 humanode-distribution-resolver = { path = "../resolver" }
 humanode-distribution-schema = { path = "../schema" }
 
-anyhow = "1"
 clap = { version = "4", features = ["derive"] }
+color-eyre = "0.6"
+eyre = "0.6"
 futures = "0.3"
 reqwest = "0.11"
 serde = "1.0"

crates/cli/src/main.rs

@@ -3,6 +3,8 @@
 #![allow(missing_docs)]
 #![allow(clippy::missing_docs_in_private_items)]
 
+use std::process::ExitCode;
+
 use clap::{Args, Parser, Subcommand};
 use humanode_distribution_resolver::resolve::Contextualized;
 use humanode_distribution_schema::manifest::Package;
@@ -91,20 +93,28 @@ struct Install {
 }
 
 #[tokio::main]
-async fn main() {
+async fn main() -> ExitCode {
+    color_eyre::install().unwrap();
     let cli = Cli::parse();
 
-    match cli.command {
-        Command::List(args) => list(args).await.unwrap(),
-        Command::Eval(args) => eval(args).await.unwrap(),
-        Command::Install(args) => install(args).await.unwrap(),
+    let result = match cli.command {
+        Command::List(args) => list(args).await,
+        Command::Eval(args) => eval(args).await,
+        Command::Install(args) => install(args).await,
+    };
+
+    if let Err(error) = result {
+        eprintln!("Error: {error:?}");
+        return ExitCode::FAILURE;
     }
+
+    ExitCode::SUCCESS
 }
 
 /// Common CLI logic to run the resolver from the given args.
 async fn resolve(
     resolution_args: ResolutionArgs,
-) -> Result<Vec<Contextualized<Package>>, anyhow::Error> {
+) -> Result<Vec<Contextualized<Package>>, eyre::Error> {
     let ResolutionArgs {
         repo_urls,
         manifest_urls,
@@ -145,7 +155,7 @@ async fn resolve(
 fn select(
     args: SelectionArgs,
     packages: Vec<Contextualized<Package>>,
-) -> Result<Contextualized<Package>, anyhow::Error> {
+) -> Result<Contextualized<Package>, eyre::Error> {
     let SelectionArgs {
         package_display_name,
     } = args;
@@ -159,7 +169,7 @@ fn select(
 }
 
 /// List command.
-async fn list(args: List) -> Result<(), anyhow::Error> {
+async fn list(args: List) -> Result<(), eyre::Error> {
     let List {
         resolution_args,
         rendering_args,
@@ -175,7 +185,7 @@ async fn list(args: List) -> Result<(), anyhow::Error> {
 }
 
 /// Eval command.
-async fn eval(args: Eval) -> Result<(), anyhow::Error> {
+async fn eval(args: Eval) -> Result<(), eyre::Error> {
     let Eval {
         resolution_args,
         selection_args,
@@ -189,7 +199,7 @@ async fn eval(args: Eval) -> Result<(), anyhow::Error> {
 }
 
 /// Install command.
-async fn install(args: Install) -> Result<(), anyhow::Error> {
+async fn install(args: Install) -> Result<(), eyre::Error> {
     let Install {
         resolution_args,
         selection_args,

crates/cli/src/package_render.rs

@@ -19,7 +19,7 @@ impl Renderer {
         &self,
         mut writer: impl std::io::Write,
         package: &Package,
-    ) -> Result<(), anyhow::Error> {
+    ) -> Result<(), eyre::Error> {
         match self {
             Self::DisplayName => writer
                 .write_all(package.display_name.as_bytes())
@@ -33,7 +33,7 @@ impl Renderer {
     }
 
     /// Render the package into a string according to the renderer config.
-    pub fn render_to_string(&self, package: &Package) -> Result<String, anyhow::Error> {
+    pub fn render_to_string(&self, package: &Package) -> Result<String, eyre::Error> {
         let mut buf = Vec::new();
         self.render(&mut buf, package)?;
         Ok(String::from_utf8(buf)?)