diff --git a/Cargo.lock b/Cargo.lock
index 7a191bcf..00c290c8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3006,6 +3006,8 @@ dependencies = [
  "dora-message",
  "dunce",
  "eyre",
+ "git2",
+ "itertools 0.14.0",
  "log",
  "once_cell",
  "schemars",
@@ -3015,6 +3017,7 @@ dependencies = [
  "serde_yaml 0.9.34+deprecated",
  "tokio",
  "tracing",
+ "url",
  "uuid 1.16.0",
  "which",
 ]
diff --git a/binaries/cli/src/command/build/local.rs b/binaries/cli/src/command/build/local.rs
index 7e45cee8..1ae19ed4 100644
--- a/binaries/cli/src/command/build/local.rs
+++ b/binaries/cli/src/command/build/local.rs
@@ -1,14 +1,20 @@
-use std::{collections::BTreeMap, path::PathBuf};
+use std::{
+    collections::{BTreeMap, BTreeSet},
+    future::Future,
+    path::PathBuf,
+};
 
 use dora_core::{
-    build::run_build_command,
-    descriptor::{Descriptor, NodeExt, SINGLE_OPERATOR_DEFAULT_ID},
+    build::{BuildInfo, BuildLogger, Builder, GitManager},
+    descriptor::{self, Descriptor, NodeExt, ResolvedNode, SINGLE_OPERATOR_DEFAULT_ID},
 };
 use dora_message::{
     common::GitSource,
     id::{NodeId, OperatorId},
+    BuildId, SessionId,
 };
 use eyre::Context;
+use futures::executor::block_on;
 
 use crate::session::DataflowSession;
 
@@ -18,69 +24,102 @@ pub fn build_dataflow_locally(
     dataflow_session: &DataflowSession,
     working_dir: PathBuf,
     uv: bool,
-) -> eyre::Result<()> {
-    let default_op_id = OperatorId::from(SINGLE_OPERATOR_DEFAULT_ID.to_string());
-    let (stdout_tx, mut stdout) = tokio::sync::mpsc::channel::<std::io::Result<String>>(10);
+) -> eyre::Result<BuildInfo> {
+    let runtime = tokio::runtime::Runtime::new()?;
 
-    tokio::spawn(async move {
-        while let Some(line) = stdout.recv().await {
-            println!(
-                "{}",
-                line.unwrap_or_else(|err| format!("io err: {}", err.kind()))
-            );
-        }
-    });
+    runtime.block_on(build_dataflow(
+        dataflow_session.session_id,
+        working_dir,
+        nodes,
+        git_sources,
+        prev_git_sources,
+        local_nodes,
+        uv,
+    ))
+}
 
-    for node in dataflow.nodes {
-        match node.kind()? {
-            dora_core::descriptor::NodeKind::Standard(_) => {
-                let Some(build) = node.build.as_deref() else {
-                    continue;
-                };
-                run_build_command(build, &working_dir, uv, &node.env, stdout_tx.clone())
-                    .with_context(|| {
-                        format!("build command failed for standard node `{}`", node.id)
-                    })?
-            }
-            dora_core::descriptor::NodeKind::Runtime(runtime_node) => {
-                for operator in &runtime_node.operators {
-                    let Some(build) = operator.config.build.as_deref() else {
-                        continue;
-                    };
-                    run_build_command(build, &working_dir, uv, &node.env, stdout_tx.clone())
-                        .with_context(|| {
-                            format!(
-                                "build command failed for operator `{}/{}`",
-                                node.id, operator.id
-                            )
-                        })?;
-                }
-            }
-            dora_core::descriptor::NodeKind::Custom(custom_node) => {
-                let Some(build) = custom_node.build.as_deref() else {
-                    continue;
-                };
-                run_build_command(build, &working_dir, uv, &node.env, stdout_tx.clone())
-                    .with_context(|| {
-                        format!("build command failed for custom node `{}`", node.id)
-                    })?
+async fn build_dataflow(
+    session_id: SessionId,
+    base_working_dir: PathBuf,
+    nodes: BTreeMap<NodeId, ResolvedNode>,
+    git_sources: BTreeMap<NodeId, GitSource>,
+    prev_git_sources: BTreeMap<NodeId, GitSource>,
+    local_nodes: BTreeSet<NodeId>,
+    uv: bool,
+) -> eyre::Result<BuildInfo> {
+    let builder = Builder {
+        session_id,
+        base_working_dir,
+        uv,
+    };
+
+    let mut git_manager = GitManager::default();
+
+    let mut tasks = Vec::new();
+
+    // build nodes
+    for node in nodes.into_values().filter(|n| local_nodes.contains(&n.id)) {
+        let node_id = node.id.clone();
+        let git_source = git_sources.get(&node_id).cloned();
+        let prev_git_source = prev_git_sources.get(&node_id).cloned();
+
+        let task = builder
+            .clone()
+            .build_node(
+                node,
+                git_source,
+                prev_git_source,
+                LocalBuildLogger,
+                &mut git_manager,
+            )
+            .await
+            .wrap_err_with(|| format!("failed to build node `{node_id}`"))?;
+        tasks.push((node_id, task));
+    }
+
+    let mut info = BuildInfo {
+        node_working_dirs: Default::default(),
+    };
+    let mut errors = Vec::new();
+    for (node_id, task) in tasks {
+        match task.await {
+            Ok(node) => {
+                info.node_working_dirs
+                    .insert(node_id, node.node_working_dir);
             }
-            dora_core::descriptor::NodeKind::Operator(operator) => {
-                let Some(build) = operator.config.build.as_deref() else {
-                    continue;
-                };
-                run_build_command(build, &working_dir, uv, &node.env, stdout_tx.clone())
-                    .with_context(|| {
-                        format!(
-                            "build command failed for operator `{}/{}`",
-                            node.id,
-                            operator.id.as_ref().unwrap_or(&default_op_id)
-                        )
-                    })?;
+            Err(err) => {
+                errors.push((node_id, err));
             }
         }
     }
-    std::mem::drop(stdout_tx);
+    if errors.is_empty() {
+        Ok(info)
+    } else {
+        let mut message = "failed to build dataflow:\n".to_owned();
+        for (node_id, err) in errors {
+            message.push_str(&format!("- {node_id}: {err:?}\n-------------------\n\n"));
+        }
+        Err(eyre::eyre!(message))
+    }
+}
+
+struct LocalBuildLogger;
+
+impl BuildLogger for LocalBuildLogger {
+    type Clone = Self;
+
+    fn log_message(
+        &mut self,
+        level: log::Level,
+        message: impl Into<String> + Send,
+    ) -> impl Future<Output = ()> + Send {
+        async move {
+            let message: String = message.into();
+            println!("{level}: \t{message}");
+        }
+    }
 
-    Ok(())
+    fn try_clone(&self) -> impl Future<Output = eyre::Result<Self::Clone>> + Send {
+        async { Ok(LocalBuildLogger) }
+    }
 }
diff --git a/binaries/cli/src/command/build/mod.rs b/binaries/cli/src/command/build/mod.rs
index abf2ac32..fff1d452 100644
--- a/binaries/cli/src/command/build/mod.rs
+++ b/binaries/cli/src/command/build/mod.rs
@@ -3,7 +3,7 @@ use dora_core::{
     descriptor::{CoreNodeKind, CustomNode, Descriptor, DescriptorExt},
     topics::{DORA_COORDINATOR_PORT_CONTROL_DEFAULT, LOCALHOST},
 };
-use dora_message::descriptor::NodeSource;
+use dora_message::{descriptor::NodeSource, BuildId};
 use eyre::Context;
 use std::collections::BTreeMap;
 
@@ -79,7 +79,7 @@ pub fn build(
                 .parent()
                 .ok_or_else(|| eyre::eyre!("dataflow path has no parent dir"))?
                 .to_owned();
-            build_dataflow_locally(
+            let build_info = build_dataflow_locally(
                 dataflow_descriptor,
                 &git_sources,
                 &dataflow_session,
@@ -88,6 +88,9 @@ pub fn build(
             )?;
 
             dataflow_session.git_sources = git_sources;
+            // generate a random BuildId and store the associated build info
+            dataflow_session.build_id = Some(BuildId::generate());
+            dataflow_session.local_build = Some(build_info);
             dataflow_session
                 .write_out_for_dataflow(&dataflow_path)
                 .context("failed to write out dataflow session file")?;
@@ -122,8 +125,14 @@ pub fn build(
                 coordinator_socket(coordinator_addr, coordinator_port),
                 log::LevelFilter::Info,
             )?;
+
+            dataflow_session.build_id = Some(build_id);
+            dataflow_session.local_build = None;
+            dataflow_session
+                .write_out_for_dataflow(&dataflow_path)
+                .context("failed to write out dataflow session file")?;
         }
-    }
+    };
 
     Ok(())
 }
diff --git a/binaries/cli/src/command/run.rs b/binaries/cli/src/command/run.rs
index 616a63b1..df01d16e 100644
--- a/binaries/cli/src/command/run.rs
+++ b/binaries/cli/src/command/run.rs
@@ -15,6 +15,7 @@ pub fn run(dataflow: String, uv: bool) -> Result<(), eyre::Error> {
     let result = rt.block_on(Daemon::run_dataflow(
         &dataflow_path,
         dataflow_session.build_id,
+        dataflow_session.local_build,
         dataflow_session.session_id,
         uv,
     ))?;
diff --git a/binaries/cli/src/lib.rs b/binaries/cli/src/lib.rs
index 278f9e90..ec28062e 100644
--- a/binaries/cli/src/lib.rs
+++ b/binaries/cli/src/lib.rs
@@ -508,7 +508,8 @@ fn run_cli(args: Args) -> eyre::Result<()> {
                         let dataflow_session =
                             DataflowSession::read_session(&dataflow_path).context("failed to read DataflowSession")?;
 
-                        let result = Daemon::run_dataflow(&dataflow_path, dataflow_session.build_id, dataflow_session.session_id, false).await?;
+                        let result = Daemon::run_dataflow(&dataflow_path,
+                            dataflow_session.build_id, dataflow_session.local_build, dataflow_session.session_id, false).await?;
                         handle_dataflow_result(result, None)
                     }
                     None => {
diff --git a/binaries/cli/src/session.rs b/binaries/cli/src/session.rs
index 0edb8011..29609e54 100644
--- a/binaries/cli/src/session.rs
+++ b/binaries/cli/src/session.rs
@@ -3,6 +3,7 @@ use std::{
     path::{Path, PathBuf},
 };
 
+use dora_core::build::BuildInfo;
 use dora_message::{common::GitSource, id::NodeId, BuildId, SessionId};
 use eyre::{Context, ContextCompat};
 
@@ -11,6 +12,7 @@ pub struct DataflowSession {
     pub build_id: Option<BuildId>,
     pub session_id: SessionId,
     pub git_sources: BTreeMap<NodeId, GitSource>,
+    pub local_build: Option<BuildInfo>,
 }
 
 impl Default for DataflowSession {
@@ -19,6 +21,7 @@ impl Default for DataflowSession {
             build_id: None,
             session_id: SessionId::generate(),
             git_sources: Default::default(),
+            local_build: Default::default(),
         }
     }
 }
diff --git a/binaries/daemon/src/lib.rs b/binaries/daemon/src/lib.rs
index 32a278e9..db44f102 100644
--- a/binaries/daemon/src/lib.rs
+++ b/binaries/daemon/src/lib.rs
@@ -2,6 +2,7 @@ use aligned_vec::{AVec, ConstAlign};
 use coordinator::CoordinatorEvent;
 use crossbeam::queue::ArrayQueue;
 use dora_core::{
+    build::{self, BuildInfo, GitManager},
     config::{DataId, Input, InputMapping, NodeId, NodeRunConfig, OperatorId},
     descriptor::{
         read_as_descriptor, CoreNodeKind, Descriptor, DescriptorExt, ResolvedNode, RuntimeNode,
@@ -62,7 +63,6 @@ use tokio_stream::{wrappers::ReceiverStream, Stream, StreamExt};
 use tracing::{error, warn};
 use uuid::{NoContext, Timestamp, Uuid};
 
-mod build;
 mod coordinator;
 mod local_listener;
 mod log;
@@ -76,10 +76,7 @@ use dora_tracing::telemetry::serialize_context;
 #[cfg(feature = "telemetry")]
 use tracing_opentelemetry::OpenTelemetrySpanExt;
 
-use crate::{
-    build::{BuildInfo, GitManager},
-    pending::DataflowStatus,
-};
+use crate::pending::DataflowStatus;
 
 const STDERR_LOG_LINES: usize = 10;
 
@@ -156,6 +153,7 @@ impl Daemon {
             None,
             clock,
             Some(remote_daemon_events_tx),
+            Default::default(),
         )
         .await
         .map(|_| ())
@@ -164,6 +162,7 @@ impl Daemon {
     pub async fn run_dataflow(
         dataflow_path: &Path,
         build_id: Option<BuildId>,
+        local_build: Option<BuildInfo>,
         session_id: SessionId,
         uv: bool,
     ) -> eyre::Result<DataflowResult> {
@@ -218,6 +217,16 @@ impl Daemon {
             Some(exit_when_done),
             clock.clone(),
             None,
+            if let Some(local_build) = local_build {
+                let Some(build_id) = build_id else {
+                    bail!("no build_id, but local_build set")
+                };
+                let mut builds = BTreeMap::new();
+                builds.insert(build_id, local_build);
+                builds
+            } else {
+                Default::default()
+            },
         );
 
         let spawn_result = reply_rx
@@ -249,6 +258,7 @@ impl Daemon {
         exit_when_done: Option<BTreeSet<(Uuid, NodeId)>>,
         clock: Arc<HLC>,
         remote_daemon_events_tx: Option<flume::Sender<eyre::Result<Timestamped<InterDaemonEvent>>>>,
+        builds: BTreeMap<BuildId, BuildInfo>,
     ) -> eyre::Result<DaemonRunResult> {
         let coordinator_connection = match coordinator_addr {
             Some(addr) => {
@@ -313,7 +323,7 @@ impl Daemon {
             zenoh_session,
             remote_daemon_events_tx,
             git_manager: Default::default(),
-            builds: Default::default(),
+            builds,
             sessions: Default::default(),
         };
 
@@ -888,9 +898,6 @@ impl Daemon {
         let builder = build::Builder {
             session_id,
             base_working_dir,
-            daemon_tx: self.events_tx.clone(),
-            dataflow_descriptor,
-            clock: self.clock.clone(),
             uv,
         };
 
@@ -906,13 +913,18 @@ impl Daemon {
             let git_source = git_sources.get(&node_id).cloned();
             let prev_git_source = prev_git_sources.get(&node_id).cloned();
 
+            let logger_cloned = logger
+                .try_clone_impl()
+                .await
+                .wrap_err("failed to clone logger")?;
+
             match builder
                 .clone()
                 .build_node(
                     node,
                     git_source,
                     prev_git_source,
-                    &mut logger,
+                    logger_cloned,
                     &mut self.git_manager,
                 )
                 .await
@@ -926,9 +938,7 @@ impl Daemon {
                     });
                 }
                 Err(err) => {
-                    self.logger
-                        .log_build(build_id, LogLevel::Error, Some(node_id), format!("{err:?}"))
-                        .await;
+                    logger.log(LogLevel::Error, format!("{err:?}")).await;
                     return Err(err);
                 }
             }
diff --git a/binaries/daemon/src/log.rs b/binaries/daemon/src/log.rs
index 176857d0..c5fe171a 100644
--- a/binaries/daemon/src/log.rs
+++ b/binaries/daemon/src/log.rs
@@ -4,7 +4,7 @@ use std::{
     sync::Arc,
 };
 
-use dora_core::{config::NodeId, uhlc};
+use dora_core::{build::BuildLogger, config::NodeId, uhlc};
 use dora_message::{
     common::{DaemonId, LogLevel, LogMessage, Timestamped},
     daemon_to_coordinator::{CoordinatorRequest, DaemonEvent},
@@ -101,17 +101,13 @@ pub struct NodeBuildLogger<'a> {
 }
 
 impl NodeBuildLogger<'_> {
-    pub fn inner(&self) -> &DaemonLogger {
-        &self.logger
-    }
-
     pub async fn log(&mut self, level: LogLevel, message: impl Into<String>) {
         self.logger
             .log_build(self.build_id, level, Some(self.node_id.clone()), message)
             .await
     }
 
-    pub async fn try_clone(&self) -> eyre::Result<NodeBuildLogger<'static>> {
+    pub async fn try_clone_impl(&self) -> eyre::Result<NodeBuildLogger<'static>> {
         Ok(NodeBuildLogger {
             build_id: self.build_id,
             node_id: self.node_id.clone(),
@@ -120,6 +116,22 @@ impl NodeBuildLogger<'_> {
     }
 }
 
+impl BuildLogger for NodeBuildLogger<'_> {
+    type Clone = NodeBuildLogger<'static>;
+
+    fn log_message(
+        &mut self,
+        level: LogLevel,
+        message: impl Into<String> + Send,
+    ) -> impl std::future::Future<Output = ()> + Send {
+        self.log(level, message)
+    }
+
+    fn try_clone(&self) -> impl std::future::Future<Output = eyre::Result<Self::Clone>> + Send {
+        self.try_clone_impl()
+    }
+}
+
 pub struct DaemonLogger {
     daemon_id: DaemonId,
     logger: Logger,
diff --git a/libraries/core/Cargo.toml b/libraries/core/Cargo.toml
index 7d9233b1..bb6cb6ec 100644
--- a/libraries/core/Cargo.toml
+++ b/libraries/core/Cargo.toml
@@ -19,8 +19,11 @@ which = "5.0.0"
 uuid = { version = "1.7", features = ["serde", "v7"] }
 tracing = "0.1"
 serde-with-expand-env = "1.1.0"
-tokio = { version = "1.24.1", features = ["fs", "process", "sync"] }
+tokio = { version = "1.24.1", features = ["fs", "process", "sync", "rt"] }
 schemars = "0.8.19"
 serde_json = "1.0.117"
 log = { version = "0.4.21", features = ["serde"] }
 dunce = "1.0.5"
+url = "2.5.4"
+git2 = { version = "0.18.0", features = ["vendored-openssl"] }
+itertools = "0.14"
diff --git a/libraries/core/src/build.rs b/libraries/core/src/build/build_command.rs
similarity index 100%
rename from libraries/core/src/build.rs
rename to libraries/core/src/build/build_command.rs
diff --git a/binaries/daemon/src/build/git.rs b/libraries/core/src/build/git.rs
similarity index 97%
rename from binaries/daemon/src/build/git.rs
rename to libraries/core/src/build/git.rs
index ca92373e..d62dfd94 100644
--- a/binaries/daemon/src/build/git.rs
+++ b/libraries/core/src/build/git.rs
@@ -1,4 +1,4 @@
-use crate::log::NodeBuildLogger;
+use crate::build::BuildLogger;
 use dora_message::{common::LogLevel, descriptor::GitRepoRev, DataflowId, SessionId};
 use eyre::{ContextCompat, WrapErr};
 use git2::FetchOptions;
@@ -142,7 +142,7 @@ pub struct GitFolder {
 }
 
 impl GitFolder {
-    pub async fn prepare(self, logger: &mut NodeBuildLogger<'_>) -> eyre::Result<PathBuf> {
+    pub async fn prepare(self, logger: &mut impl BuildLogger) -> eyre::Result<PathBuf> {
         let GitFolder { reuse } = self;
 
         let clone_dir = match reuse {
@@ -165,7 +165,7 @@ impl GitFolder {
                     .context("failed to copy repo clone")?;
 
                 logger
-                    .log(
+                    .log_message(
                         LogLevel::Info,
                         format!("fetching changes after copying {}", from.display()),
                     )
@@ -185,7 +185,7 @@ impl GitFolder {
                     .context("failed to rename repo clone")?;
 
                 logger
-                    .log(
+                    .log_message(
                         LogLevel::Info,
                         format!("fetching changes after renaming {}", from.display()),
                     )
@@ -197,7 +197,7 @@ impl GitFolder {
             }
             ReuseOptions::Reuse { dir } => {
                 logger
-                    .log(
+                    .log_message(
                         LogLevel::Info,
                         format!("reusing up-to-date {}", dir.display()),
                     )
@@ -244,7 +244,7 @@ fn rev_str(rev: &Option<GitRepoRev>) -> String {
 async fn clone_into(
     repo_addr: Url,
     clone_dir: &Path,
-    logger: &mut NodeBuildLogger<'_>,
+    logger: &mut impl BuildLogger,
 ) -> eyre::Result<git2::Repository> {
     if let Some(parent) = clone_dir.parent() {
         tokio::fs::create_dir_all(parent)
@@ -253,7 +253,7 @@ async fn clone_into(
     }
 
     logger
-        .log(
+        .log_message(
             LogLevel::Info,
             format!("cloning {repo_addr} into {}", clone_dir.display()),
         )
@@ -310,7 +310,7 @@ async fn fetch_changes(
 
 fn checkout_tree(repository: &git2::Repository, commit_hash: &str) -> eyre::Result<()> {
     let (object, reference) = repository
-        .revparse_ext(&commit_hash)
+        .revparse_ext(commit_hash)
         .context("failed to parse ref")?;
     repository
         .checkout_tree(&object, None)
diff --git a/libraries/core/src/build/logger.rs b/libraries/core/src/build/logger.rs
new file mode 100644
index 00000000..d683bcd4
--- /dev/null
+++ b/libraries/core/src/build/logger.rs
@@ -0,0 +1,15 @@
+use std::future::Future;
+
+use dora_message::common::LogLevel;
+
+pub trait BuildLogger: Send {
+    type Clone: BuildLogger + 'static;
+
+    fn log_message(
+        &mut self,
+        level: LogLevel,
+        message: impl Into<String> + Send,
+    ) -> impl Future<Output = ()> + Send;
+
+    fn try_clone(&self) -> impl Future<Output = eyre::Result<Self::Clone>> + Send;
+}
diff --git a/binaries/daemon/src/build/mod.rs b/libraries/core/src/build/mod.rs
similarity index 75%
rename from binaries/daemon/src/build/mod.rs
rename to libraries/core/src/build/mod.rs
index 2bff3bea..373b3d8c 100644
--- a/binaries/daemon/src/build/mod.rs
+++ b/libraries/core/src/build/mod.rs
@@ -1,34 +1,30 @@
 pub use git::GitManager;
+pub use logger::BuildLogger;
+
 use url::Url;
 
-use std::{collections::BTreeMap, future::Future, path::PathBuf, sync::Arc};
+use std::{collections::BTreeMap, future::Future, path::PathBuf};
 
-use dora_core::{
-    build::run_build_command,
-    descriptor::{Descriptor, ResolvedNode},
-    uhlc::HLC,
-};
+use crate::descriptor::ResolvedNode;
 use dora_message::{
-    common::{GitSource, LogLevel, Timestamped},
-    descriptor::EnvValue,
+    common::{GitSource, LogLevel},
+    descriptor::{CoreNodeKind, EnvValue},
     id::NodeId,
     SessionId,
 };
 use eyre::Context;
-use tokio::sync::mpsc;
 
-use crate::{build::git::GitFolder, log::NodeBuildLogger, Event};
+use build_command::run_build_command;
+use git::GitFolder;
 
+mod build_command;
 mod git;
+mod logger;
 
 #[derive(Clone)]
 pub struct Builder {
     pub session_id: SessionId,
     pub base_working_dir: PathBuf,
-    pub daemon_tx: mpsc::Sender<Timestamped<Event>>,
-    pub dataflow_descriptor: Descriptor,
-    /// clock is required for generating timestamps when dropping messages early because queue is full
-    pub clock: Arc<HLC>,
     pub uv: bool,
 }
 
@@ -38,10 +34,10 @@ impl Builder {
         node: ResolvedNode,
         git: Option<GitSource>,
         prev_git: Option<GitSource>,
-        logger: &mut NodeBuildLogger<'_>,
+        mut logger: impl BuildLogger,
         git_manager: &mut GitManager,
     ) -> eyre::Result<impl Future<Output = eyre::Result<BuiltNode>>> {
-        logger.log(LogLevel::Debug, "building node").await;
+        logger.log_message(LogLevel::Debug, "building node").await;
 
         let prepared_git = if let Some(GitSource { repo, commit_hash }) = git {
             let repo_url = Url::parse(&repo).context("failed to parse git repository URL")?;
@@ -59,10 +55,6 @@ impl Builder {
             None
         };
 
-        let mut logger = logger
-            .try_clone()
-            .await
-            .wrap_err("failed to clone logger")?;
         let task = async move { self.build_node_inner(node, &mut logger, prepared_git).await };
         Ok(task)
     }
@@ -70,11 +62,11 @@ impl Builder {
     async fn build_node_inner(
         self,
         node: ResolvedNode,
-        logger: &mut NodeBuildLogger<'_>,
+        logger: &mut impl BuildLogger,
         git_folder: Option<GitFolder>,
     ) -> eyre::Result<BuiltNode> {
         let node_working_dir = match &node.kind {
-            dora_core::descriptor::CoreNodeKind::Custom(n) => {
+            CoreNodeKind::Custom(n) => {
                 let node_working_dir = match git_folder {
                     Some(git_folder) => git_folder.prepare(logger).await?,
                     None => self.base_working_dir,
@@ -85,7 +77,7 @@ impl Builder {
                 }
                 node_working_dir
             }
-            dora_core::descriptor::CoreNodeKind::Runtime(n) => {
+            CoreNodeKind::Runtime(n) => {
                 // run build commands
                 for operator in &n.operators {
                     if let Some(build) = &operator.config.build {
@@ -106,15 +98,15 @@ impl Builder {
     }
 }
 
-pub async fn build_node(
-    logger: &mut NodeBuildLogger<'_>,
+async fn build_node(
+    logger: &mut impl BuildLogger,
     node_env: &Option<BTreeMap<String, EnvValue>>,
     working_dir: PathBuf,
     build: &String,
     uv: bool,
 ) -> eyre::Result<()> {
     logger
-        .log(LogLevel::Info, format!("running build command: `{build}"))
+        .log_message(LogLevel::Info, format!("running build command: `{build}"))
         .await;
     let build = build.to_owned();
     let node_env = node_env.clone();
@@ -127,7 +119,7 @@ pub async fn build_node(
     tokio::spawn(async move {
         while let Some(line) = stdout.recv().await {
             logger
-                .log(
+                .log_message(
                     LogLevel::Info,
                     line.unwrap_or_else(|err| format!("io err: {}", err.kind())),
                 )
@@ -142,7 +134,7 @@ pub struct BuiltNode {
     pub node_working_dir: PathBuf,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub struct BuildInfo {
     pub node_working_dirs: BTreeMap<NodeId, PathBuf>,
 }
diff --git a/libraries/core/src/git.rs b/libraries/core/src/git.rs
new file mode 100644
index 00000000..e69de29b
diff --git a/libraries/core/src/lib.rs b/libraries/core/src/lib.rs
index 90f2c564..f18a6059 100644
--- a/libraries/core/src/lib.rs
+++ b/libraries/core/src/lib.rs
@@ -9,6 +9,7 @@ pub use dora_message::{config, uhlc};
 
 pub mod build;
 pub mod descriptor;
+pub mod git;
 pub mod metadata;
 pub mod topics;