From c5b6a561346222b0a0b5d34d8d5c215f216e4d3f Mon Sep 17 00:00:00 2001
From: DaisukeFlowers <86377375+DaisukeFlowers@users.noreply.github.com>
Date: Fri, 3 Jul 2026 04:31:33 -0400
Subject: [PATCH] Fix development version: stage MigratePlatformShare above
 genesis

The development version sets every fork ForkAtGenesis, but
MigratePlatformShare's guard (atNotGenesis) hard-errors on
ForkAtGenesis and is consulted by applyUpgrades on every block.
The pact service therefore dies on the first execNewBlock and a
development devnet can never mine a block, fresh or seeded.

Stage the one-shot migration at block height 2 (as recap-development
does at 700); every other fork stays genesis-active. Verified with a
fresh-genesis 20-chain devnet: blocks mine past the migration height,
the platform-share keyset reset applies, and coin transfers plus SPV
cross-chain succeed.
---
 src/Chainweb/Version/Development.hs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Chainweb/Version/Development.hs b/src/Chainweb/Version/Development.hs
index 9084dd81e3..4b7bf3c679 100644
--- a/src/Chainweb/Version/Development.hs
+++ b/src/Chainweb/Version/Development.hs
@@ -10,6 +10,7 @@ module Chainweb.Version.Development(devnet, pattern Development) where
 import qualified Data.Set as Set
 
 import Chainweb.BlockCreationTime
+import Chainweb.BlockHeight
 import Chainweb.ChainId
 import Chainweb.Difficulty
 import Chainweb.Graph
@@ -32,6 +33,9 @@ devnet = ChainwebVersion
     { _versionCode = ChainwebVersionCode 0x00000002
     , _versionName = ChainwebVersionName "development"
     , _versionForks = tabulateHashMap $ \case
+        -- MigratePlatformShare is a one-shot migration guarded by
+        -- 'atNotGenesis', which errors on 'ForkAtGenesis'.
+        MigratePlatformShare -> AllChains $ ForkAtBlockHeight $ BlockHeight 2
         _ -> AllChains ForkAtGenesis
     , _versionUpgrades = AllChains mempty
     , _versionGraphs = Bottom (minBound, twentyChainGraph)