Stops spk adding annotations when spfs is not using the flatfilebuffe…

…rs encoding format.

When flatfilebuffers encoding is enabled, spk will add an annotation to the spfs runtimes it make.

Signed-off-by: David Gilligan-Cook <dcook@imageworks.com>

crates/spk-exec/src/exec.rs

@@ -9,6 +9,7 @@ use async_stream::try_stream;
 use futures::Stream;
 use relative_path::RelativePathBuf;
 use spfs::encoding::Digest;
+use spfs::graph::object::EncodingFormat;
 use spfs::prelude::*;
 use spfs::tracking::Entry;
 use spk_schema::foundation::format::{FormatIdent, FormatOptionMap};
@@ -199,18 +200,21 @@ pub async fn setup_runtime(rt: &mut spfs::runtime::Runtime, solution: &Solution)
         resolve_runtime_layers(rt.config.mount_backend.requires_localization(), solution).await?;
     rt.status.stack = spfs::graph::Stack::from_iter(stack);
 
-    // Store additional solve data all the resolved packages as extra
-    // data in the spfs runtime so future spk commands run inside the
-    // runtime can access it.
-    let solve_data = serde_json::to_string(&solution.packages_to_solve_data())
-        .map_err(|err| Error::String(err.to_string()))?;
     let spfs_config = spfs::Config::current()?;
-    rt.add_annotation(
-        SPK_SOLVE_EXTRA_DATA_KEY.to_string(),
-        solve_data,
-        spfs_config.filesystem.annotation_size_limit,
-    )
-    .await?;
+    // Annotations are only supported with FlatFileBuffers
+    if spfs_config.storage.encoding_format == EncodingFormat::FlatBuffers {
+        // Store additional solve data all the resolved packages as extra
+        // data in the spfs runtime so future spk commands run inside the
+        // runtime can access it.
+        let solve_data = serde_json::to_string(&solution.packages_to_solve_data())
+            .map_err(|err| Error::String(err.to_string()))?;
+        rt.add_annotation(
+            SPK_SOLVE_EXTRA_DATA_KEY.to_string(),
+            solve_data,
+            spfs_config.filesystem.annotation_size_limit,
+        )
+        .await?;
+    }
 
     rt.save_state_to_storage().await?;
     spfs::remount_runtime(rt).await?;