Support update builds.

src/command/build/runner.rs

@@ -7,6 +7,7 @@ use crate::fs_util::assert_directory;
 use crate::fs_util::is_git_repo;
 use crate::git_util::git_force_into_state;
 use crate::git_util::git_init_at_rev;
+use crate::nix_util::nix_flake_update;
 use crate::nix_util::nixos_build_target;
 
 pub(crate) async fn run_build(args: BuildArgs) -> Result<()> {
@@ -38,6 +39,9 @@ pub(crate) async fn run_build(args: BuildArgs) -> Result<()> {
         };
 
         prepare_flake_repo(&config, target_config).await?;
+        if target_config.get_update() {
+            run_nix_update(&config, target_config).await?;
+        }
         build_target(&db_handle, &config, target_config).await?;
     }
 
@@ -76,6 +80,14 @@ async fn prepare_flake_repo(config_root: &Config, target_config: &TargetConfig)
     Ok(())
 }
 
+async fn run_nix_update(config_root: &Config, target_config: &TargetConfig) -> Result<()> {
+    let flake_directory = target_config.get_flake_directory(config_root)?;
+
+    nix_flake_update(flake_directory).await?;
+
+    Ok(())
+}
+
 async fn build_target(
     db_handle: &DbHandle,
     config_root: &Config,

src/command/feed_logs/runner.rs

@@ -14,10 +14,12 @@ use crate::nix_util::NixOutputStream;
 use crate::nix_util::OutputLine;
 use crate::nix_util::OutputLineStream;
 use crate::nix_util::RunningBuild;
+use crate::nix_util::RunningUpdate;
 
 pub(crate) async fn feed_logs(args: FeedLogArgs) -> Result<()> {
     let db_handle = DbHandle::new::<String>(None).await?;
-    let mut running_build = RunningBuild::new(&db_handle)?;
+    let mut running_build = RunningUpdate::new()?;
+    // let mut running_build = RunningBuild::new(&db_handle)?;
     let file_stream = FileStream::new(args.input).await?;
     let mut nix_output_stream = NixOutputStream::new(file_stream);
     while let Some(message) = nix_output_stream.next().await? {