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Use altair spec objects in lightclient fork upgrade #4636

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Merged
merged 1 commit into from
Oct 20, 2025
+8 −6
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Use altair spec objects in lightclient fork upgrade #4636

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14 changes: 8 additions & 6 deletions specs/capella/light-client/fork.md
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Original file line number Diff line number Diff line change
Expand Up @@ -23,14 +23,16 @@ order to do so, that pre-Capella data needs to be locally upgraded to Capella
before processing.

```python
def upgrade_lc_header_to_capella(pre: bellatrix.LightClientHeader) -> LightClientHeader:
def upgrade_lc_header_to_capella(pre: altair.LightClientHeader) -> LightClientHeader:
return LightClientHeader(
beacon=pre.beacon,
execution=ExecutionPayloadHeader(),
execution_branch=ExecutionBranch(),
)
```

```python
def upgrade_lc_bootstrap_to_capella(pre: bellatrix.LightClientBootstrap) -> LightClientBootstrap:
def upgrade_lc_bootstrap_to_capella(pre: altair.LightClientBootstrap) -> LightClientBootstrap:
return LightClientBootstrap(
header=upgrade_lc_header_to_capella(pre.header),
current_sync_committee=pre.current_sync_committee,
Expand All @@ -39,7 +41,7 @@ def upgrade_lc_bootstrap_to_capella(pre: bellatrix.LightClientBootstrap) -> Ligh
```

```python
def upgrade_lc_update_to_capella(pre: bellatrix.LightClientUpdate) -> LightClientUpdate:
def upgrade_lc_update_to_capella(pre: altair.LightClientUpdate) -> LightClientUpdate:
return LightClientUpdate(
attested_header=upgrade_lc_header_to_capella(pre.attested_header),
next_sync_committee=pre.next_sync_committee,
Expand All @@ -53,7 +55,7 @@ def upgrade_lc_update_to_capella(pre: bellatrix.LightClientUpdate) -> LightClien

```python
def upgrade_lc_finality_update_to_capella(
pre: bellatrix.LightClientFinalityUpdate,
pre: altair.LightClientFinalityUpdate,
) -> LightClientFinalityUpdate:
return LightClientFinalityUpdate(
attested_header=upgrade_lc_header_to_capella(pre.attested_header),
Expand All @@ -66,7 +68,7 @@ def upgrade_lc_finality_update_to_capella(

```python
def upgrade_lc_optimistic_update_to_capella(
pre: bellatrix.LightClientOptimisticUpdate,
pre: altair.LightClientOptimisticUpdate,
) -> LightClientOptimisticUpdate:
return LightClientOptimisticUpdate(
attested_header=upgrade_lc_header_to_capella(pre.attested_header),
Expand All @@ -82,7 +84,7 @@ before Capella based light client data can be processed. The `LightClientStore`
upgrade MAY be performed before `CAPELLA_FORK_EPOCH`.

```python
def upgrade_lc_store_to_capella(pre: bellatrix.LightClientStore) -> LightClientStore:
def upgrade_lc_store_to_capella(pre: altair.LightClientStore) -> LightClientStore:
if pre.best_valid_update is None:
best_valid_update = None
else:
Expand Down