Fix cabalOnly dev shell (#2386)

---

<!-- Consider each and tick it off one way or the other -->
* [x] CHANGELOG updated or not needed
* [x] Documentation updated or not needed
* [x] Haddocks updated or not needed
* [x] No new TODOs introduced or explained herafter

Author: noonio

CHANGELOG.md

@@ -16,6 +16,7 @@ changes.
   - The `Checkpoint` event, and consequently the `EventLogRotated` server output, now carry the different `NodeState` variants: `NodeInSync` or `NodeCatchingUp`.
   - `Greetings` message now also contains the hydra-node synced status to the chain backend.
   - See [Issue #2286](https://github.com/cardano-scaling/hydra/issues/2286) and [PR #2290](https://github.com/cardano-scaling/hydra/pull/2290).
+- Fix the `cabalOnly` development environment to allow for `cabal build hydra-node` without `haskell.nix`.
 
 ## [1.2.0] - 2025.11.28
 

nix/hydra/shell.nix

@@ -46,12 +46,19 @@
       ];
 
       libs = [
+        # Upstream dependencies
         pkgs.glibcLocales
         pkgs.libsodium-vrf # from iohk-nix overlay
         pkgs.secp256k1
+        pkgs.libblst # from iohk-nix overlay
+        pkgs.lmdb
         pkgs.xz
         pkgs.zlib
+        pkgs.snappy # for grapesy
+        pkgs.protobuf # for grapesy
+        # Hydra dependencies
         pkgs.etcd # Build-time dependency (static binary to be embedded)
+        pkgs.librust_accumulator # From cardano-scaling/rust-accumulator
       ]
       ++
       pkgs.lib.optionals pkgs.stdenv.isLinux [