Use serial blockio to avoid liburing system dependency

The blockio package defaults to io_uring which requires liburing.
The devx CI environment does not provide liburing, so we use the
serialblockio flag instead.

TODO: revert when CI provides liburing or switch to io_uring for
better LSM I/O performance.

Author: kderme

cabal.project

@@ -39,6 +39,11 @@ package cardano-db-tool
 package cardano-smash-server
   ghc-options: -Wall -Werror -Wredundant-constraints -Wincomplete-uni-patterns -Wincomplete-record-updates -Wpartial-fields -Wunused-imports -Wunused-packages
 
+package blockio
+  -- Use serial block IO to avoid requiring liburing (not available in devx CI).
+  -- TODO: revert when CI provides liburing or switch to io_uring for better LSM perf.
+  flags: +serialblockio
+
 package cardano-node
    -- We are using cardano-node as a library and we never use the systemd scribe, so there
    -- is no benefit to linking against it