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Bump ouroboros-consensus to 3.0.0.0#1178

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Bump ouroboros-consensus to 3.0.0.0#1178
geo2a wants to merge 2 commits intomasterfrom
geo2a/bump-consensus

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@geo2a geo2a commented Apr 8, 2026

Changelog

- description: |
    <insert-changelog-description-here>
# uncomment types applicable to the change:
  type:
  # - feature        # introduces a new feature
  # - breaking       # the API has changed in a breaking way
  # - compatible     # the API has changed but is non-breaking
  # - optimisation   # measurable performance improvements
  # - refactoring    # QoL changes
  # - bugfix         # fixes a defect
  # - test           # fixes/modifies tests
  - maintenance    # not directly related to the code
  - release        # related to a new release preparation
  # - documentation  # change in code docs, haddocks...
# uncomment at least one main project this PR is associated with
  projects:
  - cardano-api
  # - cardano-api-gen
  # - cardano-rpc
  # - cardano-wasm

Context

This PR updates ouroboros-consensus to the new release that includes the mempool transaction differences optimisations work.

It also brings in the minor Ledger release, cardano-ledger-conway-1.21.1.0.

How to trust this PR

The cabal plan diff indicates the desired packages bumps:

-cardano-ledger-conway-1.21.0.0 lib
+cardano-ledger-conway-1.21.1.0 lib
-cardano-ledger-conway-1.21.0.0 lib:cddl
+cardano-ledger-conway-1.21.1.0 lib:cddl
-cardano-ledger-conway-1.21.0.0 lib:testlib
+cardano-ledger-conway-1.21.1.0 lib:testlib
-cardano-ledger-conway-1.21.0.0 exe:gen-golden
+cardano-ledger-conway-1.21.1.0 exe:gen-golden
-cardano-ledger-conway-1.21.0.0 exe:generate-cddl
+cardano-ledger-conway-1.21.1.0 exe:generate-cddl
-cardano-prelude-0.2.1.0 lib
+cardano-prelude-0.2.2.0 lib
-ouroboros-consensus-2.0.0.0 lib
+ouroboros-consensus-3.0.0.0 lib
-ouroboros-consensus-2.0.0.0 lib:cardano
+ouroboros-consensus-3.0.0.0 lib:cardano
-ouroboros-consensus-2.0.0.0 lib:diffusion
+ouroboros-consensus-3.0.0.0 lib:diffusion
-ouroboros-consensus-2.0.0.0 lib:lmdb
+ouroboros-consensus-3.0.0.0 lib:lmdb
-ouroboros-consensus-2.0.0.0 lib:lsm
+ouroboros-consensus-3.0.0.0 lib:lsm
-ouroboros-consensus-2.0.0.0 lib:protocol
+ouroboros-consensus-3.0.0.0 lib:protocol
-ouroboros-consensus-2.0.0.0 lib:unstable-byron-testlib
+ouroboros-consensus-3.0.0.0 lib:unstable-byron-testlib
-ouroboros-consensus-2.0.0.0 lib:unstable-byronspec
+ouroboros-consensus-3.0.0.0 lib:unstable-byronspec
-ouroboros-consensus-2.0.0.0 lib:unstable-cardano-testlib
+ouroboros-consensus-3.0.0.0 lib:unstable-cardano-testlib
-ouroboros-consensus-2.0.0.0 lib:unstable-cardano-tools
+ouroboros-consensus-3.0.0.0 lib:unstable-cardano-tools
-ouroboros-consensus-2.0.0.0 lib:unstable-consensus-testlib
+ouroboros-consensus-3.0.0.0 lib:unstable-consensus-testlib
-ouroboros-consensus-2.0.0.0 lib:unstable-diffusion-testlib
+ouroboros-consensus-3.0.0.0 lib:unstable-diffusion-testlib
-ouroboros-consensus-2.0.0.0 lib:unstable-mempool-test-utils
+ouroboros-consensus-3.0.0.0 lib:unstable-mempool-test-utils
-ouroboros-consensus-2.0.0.0 lib:unstable-mock-block
+ouroboros-consensus-3.0.0.0 lib:unstable-mock-block
-ouroboros-consensus-2.0.0.0 lib:unstable-mock-testlib
+ouroboros-consensus-3.0.0.0 lib:unstable-mock-testlib
-ouroboros-consensus-2.0.0.0 lib:unstable-protocol-testlib
+ouroboros-consensus-3.0.0.0 lib:unstable-protocol-testlib
-ouroboros-consensus-2.0.0.0 lib:unstable-shelley-testlib
+ouroboros-consensus-3.0.0.0 lib:unstable-shelley-testlib
-ouroboros-consensus-2.0.0.0 lib:unstable-snapshot-conversion
+ouroboros-consensus-3.0.0.0 lib:unstable-snapshot-conversion
-ouroboros-consensus-2.0.0.0 lib:unstable-tutorials
+ouroboros-consensus-3.0.0.0 lib:unstable-tutorials
-ouroboros-consensus-2.0.0.0 exe:db-analyser
+ouroboros-consensus-3.0.0.0 exe:db-analyser
-ouroboros-consensus-2.0.0.0 exe:db-immutaliser
+ouroboros-consensus-3.0.0.0 exe:db-immutaliser
-ouroboros-consensus-2.0.0.0 exe:db-synthesizer
+ouroboros-consensus-3.0.0.0 exe:db-synthesizer
-ouroboros-consensus-2.0.0.0 exe:db-truncater
+ouroboros-consensus-3.0.0.0 exe:db-truncater
-ouroboros-consensus-2.0.0.0 exe:gen-header
+ouroboros-consensus-3.0.0.0 exe:gen-header
-ouroboros-consensus-2.0.0.0 exe:immdb-server
+ouroboros-consensus-3.0.0.0 exe:immdb-server
-ouroboros-consensus-2.0.0.0 exe:snapshot-converter
+ouroboros-consensus-3.0.0.0 exe:snapshot-converter
-trace-dispatcher-2.12.0 lib
+trace-dispatcher-2.12.1 lib

Checklist

  • Commit sequence broadly makes sense and commits have useful messages
  • New tests are added if needed and existing tests are updated. See Running tests for more details
  • Self-reviewed the diff

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