Add thiserror instead of exposing eyre anonymous errors

The change here is to make it easier for the consumer to debug the api.
Such that they can `match` on individual errors instead of having to
parse text.

eyre is convenient, but mostly from a consumers perspective

Cargo.lock

@@ -334,6 +334,7 @@ dependencies = [
  "sha2",
  "tar",
  "tempfile",
+ "thiserror",
  "tokio",
  "tracing",
  "tracing-subscriber",
@@ -352,6 +353,7 @@ dependencies = [
  "rand",
  "serde",
  "serde_json",
+ "thiserror",
  "tokio",
  "tracing",
  "tracing-subscriber",

crates/dagger-codegen/src/rust/functions.rs

@@ -235,8 +235,10 @@ fn render_output_type(funcs: &CommonFunctions, type_ref: &TypeRef) -> rust::Toke
         };
     }
 
+    let dagger_error = rust::import("crate::errors", "DaggerError");
+
     quote! {
-        eyre::Result<$output_type>
+        Result<$output_type, $dagger_error>
     }
 }
 

crates/dagger-core/Cargo.toml

@@ -16,6 +16,7 @@ serde_json = { workspace = true }
 tokio = { workspace = true }
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true }
+thiserror.workspace = true
 
 base64 = "0.21.0"
 dirs = "4.0.0"

crates/dagger-core/src/gql_client.rs

@@ -15,7 +15,7 @@ pub struct GraphQLError {
 #[derive(Deserialize, Debug, Clone)]
 #[allow(dead_code)]
 pub struct GraphQLErrorMessage {
-    message: String,
+    pub message: String,
     locations: Option<Vec<GraphQLErrorLocation>>,
     extensions: Option<HashMap<String, String>>,
     path: Option<Vec<GraphQLErrorPathParam>>,

crates/dagger-core/src/graphql_client.rs

@@ -4,13 +4,14 @@ use std::sync::Arc;
 use async_trait::async_trait;
 use base64::engine::general_purpose;
 use base64::Engine;
+use thiserror::Error;
 
 use crate::connect_params::ConnectParams;
 use crate::gql_client::{ClientConfig, GQLClient};
 
 #[async_trait]
 pub trait GraphQLClient {
-    async fn query(&self, query: &str) -> eyre::Result<Option<serde_json::Value>>;
+    async fn query(&self, query: &str) -> Result<Option<serde_json::Value>, GraphQLError>;
 }
 
 pub type DynGraphQLClient = Arc<dyn GraphQLClient + Send + Sync>;
@@ -40,13 +41,50 @@ impl DefaultGraphQLClient {
 
 #[async_trait]
 impl GraphQLClient for DefaultGraphQLClient {
-    async fn query(&self, query: &str) -> eyre::Result<Option<serde_json::Value>> {
-        let res: Option<serde_json::Value> = self
-            .client
-            .query(&query)
-            .await
-            .map_err(|r| eyre::anyhow!(r.to_string()))?;
+    async fn query(&self, query: &str) -> Result<Option<serde_json::Value>, GraphQLError> {
+        let res: Option<serde_json::Value> =
+            self.client.query(&query).await.map_err(map_graphql_error)?;
 
         return Ok(res);
     }
 }
+
+fn map_graphql_error(gql_error: crate::gql_client::GraphQLError) -> GraphQLError {
+    let message = gql_error.message().to_string();
+    let json = gql_error.json();
+
+    if let Some(json) = json {
+        if !json.is_empty() {
+            return GraphQLError::DomainError {
+                message,
+                fields: GraphqlErrorMessages(json.into_iter().map(|e| e.message).collect()),
+            };
+        }
+    }
+
+    GraphQLError::HttpError(message)
+}
+
+#[derive(Error, Debug)]
+pub enum GraphQLError {
+    #[error("http error: {0}")]
+    HttpError(String),
+    #[error("domain error:\n{message}\n{fields}")]
+    DomainError {
+        message: String,
+        fields: GraphqlErrorMessages,
+    },
+}
+
+#[derive(Debug, Clone)]
+pub struct GraphqlErrorMessages(Vec<String>);
+
+impl std::fmt::Display for GraphqlErrorMessages {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        for error in self.0.iter() {
+            f.write_fmt(format_args!("{error}\n"))?;
+        }
+
+        Ok(())
+    }
+}

crates/dagger-sdk/Cargo.toml

@@ -19,6 +19,7 @@ serde = { workspace = true }
 serde_json = { workspace = true }
 tracing.workspace = true
 tracing-subscriber.workspace = true
+thiserror.workspace = true
 
 futures = "0.3.28"
 derive_builder = "0.12.0"

crates/dagger-sdk/src/client.rs

@@ -5,20 +5,24 @@ use dagger_core::graphql_client::DefaultGraphQLClient;
 use dagger_core::config::Config;
 use dagger_core::engine::Engine as DaggerEngine;
 
+use crate::errors::ConnectError;
 use crate::gen::Query;
 use crate::logging::StdLogger;
 use crate::querybuilder::query;
 
 pub type DaggerConn = Arc<Query>;
 
-pub async fn connect() -> eyre::Result<DaggerConn> {
+pub async fn connect() -> Result<DaggerConn, ConnectError> {
     let cfg = Config::new(None, None, None, None, Some(Arc::new(StdLogger::default())));
 
     connect_opts(cfg).await
 }
 
-pub async fn connect_opts(cfg: Config) -> eyre::Result<DaggerConn> {
-    let (conn, proc) = DaggerEngine::new().start(&cfg).await?;
+pub async fn connect_opts(cfg: Config) -> Result<DaggerConn, ConnectError> {
+    let (conn, proc) = DaggerEngine::new()
+        .start(&cfg)
+        .await
+        .map_err(ConnectError::FailedToConnect)?;
 
     Ok(Arc::new(Query {
         proc: proc.map(|p| Arc::new(p)),

crates/dagger-sdk/src/errors.rs

@@ -0,0 +1,27 @@
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum ConnectError {
+    #[error("failed to connect to dagger engine")]
+    FailedToConnect(#[source] eyre::Error),
+}
+
+#[derive(Error, Debug)]
+pub enum DaggerError {
+    #[error("failed to build dagger internal graph")]
+    Build(#[source] eyre::Error),
+    #[error("failed to parse input type")]
+    Serialize(#[source] eyre::Error),
+    #[error("failed to query dagger engine: {0}")]
+    Query(#[source] dagger_core::graphql_client::GraphQLError),
+    #[error("failed to unpack response")]
+    Unpack(#[source] DaggerUnpackError),
+}
+
+#[derive(Error, Debug)]
+pub enum DaggerUnpackError {
+    #[error("Too many nested objects inside graphql response")]
+    TooManyNestedObjects,
+    #[error("failed to deserialize response")]
+    Deserialize(#[source] serde_json::Error),
+}

crates/dagger-sdk/src/gen.rs

@@ -1,3 +1,4 @@
+use crate::errors::DaggerError;
 use crate::querybuilder::Selection;
 use dagger_core::graphql_client::DynGraphQLClient;
 use derive_builder::Builder;
@@ -121,7 +122,7 @@ pub struct CacheVolume {
 }
 
 impl CacheVolume {
-    pub async fn id(&self) -> eyre::Result<CacheId> {
+    pub async fn id(&self) -> Result<CacheId, DaggerError> {
         let query = self.selection.select("id");
 
         query.execute(self.graphql_client.clone()).await
@@ -397,7 +398,7 @@ impl Container {
         };
     }
     /// Retrieves default arguments for future commands.
-    pub async fn default_args(&self) -> eyre::Result<Vec<String>> {
+    pub async fn default_args(&self) -> Result<Vec<String>, DaggerError> {
         let query = self.selection.select("defaultArgs");
 
         query.execute(self.graphql_client.clone()).await
@@ -427,7 +428,7 @@ impl Container {
     /// # Arguments
     ///
     /// * `opt` - optional argument, see inner type for documentation, use <func>_opts to use
-    pub async fn endpoint(&self) -> eyre::Result<String> {
+    pub async fn endpoint(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("endpoint");
 
         query.execute(self.graphql_client.clone()).await
@@ -441,7 +442,10 @@ impl Container {
     /// # Arguments
     ///
     /// * `opt` - optional argument, see inner type for documentation, use <func>_opts to use
-    pub async fn endpoint_opts<'a>(&self, opts: ContainerEndpointOpts<'a>) -> eyre::Result<String> {
+    pub async fn endpoint_opts<'a>(
+        &self,
+        opts: ContainerEndpointOpts<'a>,
+    ) -> Result<String, DaggerError> {
         let mut query = self.selection.select("endpoint");
 
         if let Some(port) = opts.port {
@@ -454,7 +458,7 @@ impl Container {
         query.execute(self.graphql_client.clone()).await
     }
     /// Retrieves entrypoint to be prepended to the arguments of all commands.
-    pub async fn entrypoint(&self) -> eyre::Result<Vec<String>> {
+    pub async fn entrypoint(&self) -> Result<Vec<String>, DaggerError> {
         let query = self.selection.select("entrypoint");
 
         query.execute(self.graphql_client.clone()).await
@@ -464,7 +468,7 @@ impl Container {
     /// # Arguments
     ///
     /// * `name` - The name of the environment variable to retrieve (e.g., "PATH").
-    pub async fn env_variable(&self, name: impl Into<String>) -> eyre::Result<String> {
+    pub async fn env_variable(&self, name: impl Into<String>) -> Result<String, DaggerError> {
         let mut query = self.selection.select("envVariable");
 
         query = query.arg("name", name.into());
@@ -531,7 +535,7 @@ impl Container {
     }
     /// Exit code of the last executed command. Zero means success.
     /// Will execute default command if none is set, or error if there's no default.
-    pub async fn exit_code(&self) -> eyre::Result<isize> {
+    pub async fn exit_code(&self) -> Result<isize, DaggerError> {
         let query = self.selection.select("exitCode");
 
         query.execute(self.graphql_client.clone()).await
@@ -545,7 +549,7 @@ impl Container {
     /// * `path` - Host's destination path (e.g., "./tarball").
     /// Path can be relative to the engine's workdir or absolute.
     /// * `opt` - optional argument, see inner type for documentation, use <func>_opts to use
-    pub async fn export(&self, path: impl Into<String>) -> eyre::Result<bool> {
+    pub async fn export(&self, path: impl Into<String>) -> Result<bool, DaggerError> {
         let mut query = self.selection.select("export");
 
         query = query.arg("path", path.into());
@@ -566,7 +570,7 @@ impl Container {
         &self,
         path: impl Into<String>,
         opts: ContainerExportOpts,
-    ) -> eyre::Result<bool> {
+    ) -> Result<bool, DaggerError> {
         let mut query = self.selection.select("export");
 
         query = query.arg("path", path.into());
@@ -634,19 +638,19 @@ impl Container {
     }
     /// Retrieves a hostname which can be used by clients to reach this container.
     /// Currently experimental; set _EXPERIMENTAL_DAGGER_SERVICES_DNS=0 to disable.
-    pub async fn hostname(&self) -> eyre::Result<String> {
+    pub async fn hostname(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("hostname");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// A unique identifier for this container.
-    pub async fn id(&self) -> eyre::Result<ContainerId> {
+    pub async fn id(&self) -> Result<ContainerId, DaggerError> {
         let query = self.selection.select("id");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// The unique image reference which can only be retrieved immediately after the 'Container.From' call.
-    pub async fn image_ref(&self) -> eyre::Result<String> {
+    pub async fn image_ref(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("imageRef");
 
         query.execute(self.graphql_client.clone()).await
@@ -694,7 +698,7 @@ impl Container {
         };
     }
     /// Retrieves the value of the specified label.
-    pub async fn label(&self, name: impl Into<String>) -> eyre::Result<String> {
+    pub async fn label(&self, name: impl Into<String>) -> Result<String, DaggerError> {
         let mut query = self.selection.select("label");
 
         query = query.arg("name", name.into());
@@ -712,7 +716,7 @@ impl Container {
         }];
     }
     /// Retrieves the list of paths where a directory is mounted.
-    pub async fn mounts(&self) -> eyre::Result<Vec<String>> {
+    pub async fn mounts(&self) -> Result<Vec<String>, DaggerError> {
         let query = self.selection.select("mounts");
 
         query.execute(self.graphql_client.clone()).await
@@ -763,7 +767,7 @@ impl Container {
         };
     }
     /// The platform this container executes and publishes as.
-    pub async fn platform(&self) -> eyre::Result<Platform> {
+    pub async fn platform(&self) -> Result<Platform, DaggerError> {
         let query = self.selection.select("platform");
 
         query.execute(self.graphql_client.clone()).await
@@ -778,7 +782,7 @@ impl Container {
     ///
     /// Formatted as [host]/[user]/[repo]:[tag] (e.g. "docker.io/dagger/dagger:main").
     /// * `opt` - optional argument, see inner type for documentation, use <func>_opts to use
-    pub async fn publish(&self, address: impl Into<String>) -> eyre::Result<String> {
+    pub async fn publish(&self, address: impl Into<String>) -> Result<String, DaggerError> {
         let mut query = self.selection.select("publish");
 
         query = query.arg("address", address.into());
@@ -800,7 +804,7 @@ impl Container {
         &self,
         address: impl Into<String>,
         opts: ContainerPublishOpts,
-    ) -> eyre::Result<String> {
+    ) -> Result<String, DaggerError> {
         let mut query = self.selection.select("publish");
 
         query = query.arg("address", address.into());
@@ -822,20 +826,20 @@ impl Container {
     }
     /// The error stream of the last executed command.
     /// Will execute default command if none is set, or error if there's no default.
-    pub async fn stderr(&self) -> eyre::Result<String> {
+    pub async fn stderr(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("stderr");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// The output stream of the last executed command.
     /// Will execute default command if none is set, or error if there's no default.
-    pub async fn stdout(&self) -> eyre::Result<String> {
+    pub async fn stdout(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("stdout");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// Retrieves the user to be set for all commands.
-    pub async fn user(&self) -> eyre::Result<String> {
+    pub async fn user(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("user");
 
         query.execute(self.graphql_client.clone()).await
@@ -1720,7 +1724,7 @@ impl Container {
         };
     }
     /// Retrieves the working directory for all commands.
-    pub async fn workdir(&self) -> eyre::Result<String> {
+    pub async fn workdir(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("workdir");
 
         query.execute(self.graphql_client.clone()).await
@@ -1882,7 +1886,7 @@ impl Directory {
     /// # Arguments
     ///
     /// * `opt` - optional argument, see inner type for documentation, use <func>_opts to use
-    pub async fn entries(&self) -> eyre::Result<Vec<String>> {
+    pub async fn entries(&self) -> Result<Vec<String>, DaggerError> {
         let query = self.selection.select("entries");
 
         query.execute(self.graphql_client.clone()).await
@@ -1896,7 +1900,7 @@ impl Directory {
     pub async fn entries_opts<'a>(
         &self,
         opts: DirectoryEntriesOpts<'a>,
-    ) -> eyre::Result<Vec<String>> {
+    ) -> Result<Vec<String>, DaggerError> {
         let mut query = self.selection.select("entries");
 
         if let Some(path) = opts.path {
@@ -1910,7 +1914,7 @@ impl Directory {
     /// # Arguments
     ///
     /// * `path` - Location of the copied directory (e.g., "logs/").
-    pub async fn export(&self, path: impl Into<String>) -> eyre::Result<bool> {
+    pub async fn export(&self, path: impl Into<String>) -> Result<bool, DaggerError> {
         let mut query = self.selection.select("export");
 
         query = query.arg("path", path.into());
@@ -1934,7 +1938,7 @@ impl Directory {
         };
     }
     /// The content-addressed identifier of the directory.
-    pub async fn id(&self) -> eyre::Result<DirectoryId> {
+    pub async fn id(&self) -> Result<DirectoryId, DaggerError> {
         let query = self.selection.select("id");
 
         query.execute(self.graphql_client.clone()).await
@@ -2242,13 +2246,13 @@ pub struct EnvVariable {
 
 impl EnvVariable {
     /// The environment variable name.
-    pub async fn name(&self) -> eyre::Result<String> {
+    pub async fn name(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("name");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// The environment variable value.
-    pub async fn value(&self) -> eyre::Result<String> {
+    pub async fn value(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("value");
 
         query.execute(self.graphql_client.clone()).await
@@ -2263,7 +2267,7 @@ pub struct File {
 
 impl File {
     /// Retrieves the contents of the file.
-    pub async fn contents(&self) -> eyre::Result<String> {
+    pub async fn contents(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("contents");
 
         query.execute(self.graphql_client.clone()).await
@@ -2273,7 +2277,7 @@ impl File {
     /// # Arguments
     ///
     /// * `path` - Location of the written directory (e.g., "output.txt").
-    pub async fn export(&self, path: impl Into<String>) -> eyre::Result<bool> {
+    pub async fn export(&self, path: impl Into<String>) -> Result<bool, DaggerError> {
         let mut query = self.selection.select("export");
 
         query = query.arg("path", path.into());
@@ -2281,7 +2285,7 @@ impl File {
         query.execute(self.graphql_client.clone()).await
     }
     /// Retrieves the content-addressed identifier of the file.
-    pub async fn id(&self) -> eyre::Result<FileId> {
+    pub async fn id(&self) -> Result<FileId, DaggerError> {
         let query = self.selection.select("id");
 
         query.execute(self.graphql_client.clone()).await
@@ -2297,7 +2301,7 @@ impl File {
         };
     }
     /// Gets the size of the file, in bytes.
-    pub async fn size(&self) -> eyre::Result<isize> {
+    pub async fn size(&self) -> Result<isize, DaggerError> {
         let query = self.selection.select("size");
 
         query.execute(self.graphql_client.clone()).await
@@ -2338,7 +2342,7 @@ pub struct GitRefTreeOpts<'a> {
 
 impl GitRef {
     /// The digest of the current value of this ref.
-    pub async fn digest(&self) -> eyre::Result<String> {
+    pub async fn digest(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("digest");
 
         query.execute(self.graphql_client.clone()).await
@@ -2405,7 +2409,7 @@ impl GitRepository {
         };
     }
     /// Lists of branches on the repository.
-    pub async fn branches(&self) -> eyre::Result<Vec<String>> {
+    pub async fn branches(&self) -> Result<Vec<String>, DaggerError> {
         let query = self.selection.select("branches");
 
         query.execute(self.graphql_client.clone()).await
@@ -2443,7 +2447,7 @@ impl GitRepository {
         };
     }
     /// Lists of tags on the repository.
-    pub async fn tags(&self) -> eyre::Result<Vec<String>> {
+    pub async fn tags(&self) -> Result<Vec<String>, DaggerError> {
         let query = self.selection.select("tags");
 
         query.execute(self.graphql_client.clone()).await
@@ -2609,7 +2613,7 @@ impl HostVariable {
         };
     }
     /// The value of this variable.
-    pub async fn value(&self) -> eyre::Result<String> {
+    pub async fn value(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("value");
 
         query.execute(self.graphql_client.clone()).await
@@ -2624,13 +2628,13 @@ pub struct Label {
 
 impl Label {
     /// The label name.
-    pub async fn name(&self) -> eyre::Result<String> {
+    pub async fn name(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("name");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// The label value.
-    pub async fn value(&self) -> eyre::Result<String> {
+    pub async fn value(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("value");
 
         query.execute(self.graphql_client.clone()).await
@@ -2645,19 +2649,19 @@ pub struct Port {
 
 impl Port {
     /// The port description.
-    pub async fn description(&self) -> eyre::Result<String> {
+    pub async fn description(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("description");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// The port number.
-    pub async fn port(&self) -> eyre::Result<isize> {
+    pub async fn port(&self) -> Result<isize, DaggerError> {
         let query = self.selection.select("port");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// The transport layer network protocol.
-    pub async fn protocol(&self) -> eyre::Result<NetworkProtocol> {
+    pub async fn protocol(&self) -> Result<NetworkProtocol, DaggerError> {
         let query = self.selection.select("protocol");
 
         query.execute(self.graphql_client.clone()).await
@@ -2692,25 +2696,25 @@ impl Project {
         };
     }
     /// install the project's schema
-    pub async fn install(&self) -> eyre::Result<bool> {
+    pub async fn install(&self) -> Result<bool, DaggerError> {
         let query = self.selection.select("install");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// name of the project
-    pub async fn name(&self) -> eyre::Result<String> {
+    pub async fn name(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("name");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// schema provided by the project
-    pub async fn schema(&self) -> eyre::Result<String> {
+    pub async fn schema(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("schema");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// sdk used to generate code for and/or execute this project
-    pub async fn sdk(&self) -> eyre::Result<String> {
+    pub async fn sdk(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("sdk");
 
         query.execute(self.graphql_client.clone()).await
@@ -2825,7 +2829,7 @@ impl Query {
         };
     }
     /// The default platform of the builder.
-    pub async fn default_platform(&self) -> eyre::Result<Platform> {
+    pub async fn default_platform(&self) -> Result<Platform, DaggerError> {
         let query = self.selection.select("defaultPlatform");
 
         query.execute(self.graphql_client.clone()).await
@@ -3094,13 +3098,13 @@ pub struct Secret {
 
 impl Secret {
     /// The identifier for this secret.
-    pub async fn id(&self) -> eyre::Result<SecretId> {
+    pub async fn id(&self) -> Result<SecretId, DaggerError> {
         let query = self.selection.select("id");
 
         query.execute(self.graphql_client.clone()).await
     }
     /// The value of this secret.
-    pub async fn plaintext(&self) -> eyre::Result<String> {
+    pub async fn plaintext(&self) -> Result<String, DaggerError> {
         let query = self.selection.select("plaintext");
 
         query.execute(self.graphql_client.clone()).await
@@ -3115,7 +3119,7 @@ pub struct Socket {
 
 impl Socket {
     /// The content-addressed identifier of the socket.
-    pub async fn id(&self) -> eyre::Result<SocketId> {
+    pub async fn id(&self) -> Result<SocketId, DaggerError> {
         let query = self.selection.select("id");
 
         query.execute(self.graphql_client.clone()).await

crates/dagger-sdk/src/lib.rs

@@ -1,6 +1,7 @@
 #![deny(warnings)]
 
 mod client;
+pub mod errors;
 mod gen;
 pub mod logging;
 mod querybuilder;

crates/dagger-sdk/src/querybuilder.rs

@@ -1,9 +1,10 @@
 use std::{collections::HashMap, ops::Add, sync::Arc};
 
 use dagger_core::graphql_client::DynGraphQLClient;
-use eyre::Context;
 use serde::{Deserialize, Serialize};
 
+use crate::errors::{DaggerError, DaggerUnpackError};
+
 pub fn query() -> Selection {
     Selection::default()
 }
@@ -92,7 +93,7 @@ impl Selection {
         s
     }
 
-    pub fn build(&self) -> eyre::Result<String> {
+    pub fn build(&self) -> Result<String, DaggerError> {
         let mut fields = vec!["query".to_string()];
 
         for sel in self.path() {
@@ -117,7 +118,7 @@ impl Selection {
         Ok(fields.join("{") + &"}".repeat(fields.len() - 1))
     }
 
-    pub async fn execute<D>(&self, gql_client: DynGraphQLClient) -> eyre::Result<D>
+    pub async fn execute<D>(&self, gql_client: DynGraphQLClient) -> Result<D, DaggerError>
     where
         D: for<'de> Deserialize<'de>,
     {
@@ -127,7 +128,7 @@ impl Selection {
 
         let resp: Option<serde_json::Value> = match gql_client.query(&query).await {
             Ok(r) => r,
-            Err(e) => eyre::bail!(e),
+            Err(e) => return Err(DaggerError::Query(e)),
         };
 
         let resp: Option<D> = self.unpack_resp(resp)?;
@@ -151,7 +152,10 @@ impl Selection {
         selections
     }
 
-    pub(crate) fn unpack_resp<D>(&self, resp: Option<serde_json::Value>) -> eyre::Result<Option<D>>
+    pub(crate) fn unpack_resp<D>(
+        &self,
+        resp: Option<serde_json::Value>,
+    ) -> Result<Option<D>, DaggerError>
     where
         D: for<'de> Deserialize<'de>,
     {
@@ -161,21 +165,23 @@ impl Selection {
         }
     }
 
-    fn unpack_resp_value<D>(&self, r: serde_json::Value) -> eyre::Result<D>
+    fn unpack_resp_value<D>(&self, r: serde_json::Value) -> Result<D, DaggerError>
     where
         D: for<'de> Deserialize<'de>,
     {
         if let Some(o) = r.as_object() {
             let keys = o.keys();
             if keys.len() != 1 {
-                eyre::bail!("too many nested objects inside graphql response")
+                return Err(DaggerError::Unpack(DaggerUnpackError::TooManyNestedObjects));
             }
 
             let first = keys.into_iter().next().unwrap();
             return self.unpack_resp_value(o.get(first).unwrap().clone());
         }
 
-        serde_json::from_value::<D>(r).context("could not deserialize response")
+        serde_json::from_value::<D>(r)
+            .map_err(DaggerUnpackError::Deserialize)
+            .map_err(DaggerError::Unpack)
     }
 }
 

crates/dagger-sdk/tests/mod.rs

@@ -111,9 +111,9 @@ async fn test_err_message() {
     assert_eq!(alpine.is_err(), true);
     let err = alpine.expect_err("Tests expect err");
 
-    let error_msg = r#"
-GQLClient Error: Look at json field for more details
-Message: pull access denied, repository does not exist or may require authorization: server message: insufficient_scope: authorization failed
+    let error_msg = r#"failed to query dagger engine: domain error:
+Look at json field for more details
+pull access denied, repository does not exist or may require authorization: server message: insufficient_scope: authorization failed
 "#;
 
     assert_eq!(err.to_string().as_str(), error_msg);