solana-zk-token-sdk

• Breaking:
  • SDK:
    • cargo-build-bpf and cargo-test-bpf have been deprecated for two years and have now been definitely removed. Use cargo-build-sbf and cargo-test-sbf instead.
    • dependency: curve25519-dalek upgraded to new major version 4 (#1693). This causes breakage when mixing v2.0 and v2.1 Solana crates, so be sure to use all of one or the other. Please use only crates compatible with v2.1.
  • Stake:
    • removed the unreleased redelegate instruction processor and CLI commands (#2213)
  • Banks-client:
    • relax functions to use &self instead of &mut self (#2591)
  • agave-validator:
    • Remove the deprecated value of fifo for --rocksdb-shred-compaction (#3451)
• Changes
  • SDK:
    • removed the respan macro. This was marked as "internal use only" and was no longer used internally.
    • add entrypoint_no_alloc!, a more performant program entrypoint that avoids allocations, saving 20-30 CUs per unique account
    • cargo-build-sbf: a workspace or package-level Cargo.toml may specify tools-version for overriding the default platform tools version when building on-chain programs. For example:

[package.metadata.solana]
tools-version = "1.43"

or

[workspace.metadata.solana]
tools-version = "1.43"

The order of precedence for the chosen tools version goes: --tools-version argument, package version, workspace version, and finally default version.

• package-metadata: specify a program's id in Cargo.toml for easy consumption by downstream users and tools using solana-package-metadata (#1806). For example:

[package.metadata.solana]
program-id = "MyProgram1111111111111111111111111111111111"

Can be consumed in the program crate:

solana_package_metadata::declare_id_with_package_metadata!("solana.program-id");

This is equivalent to writing:

solana_pubkey::declare_id!("MyProgram1111111111111111111111111111111111");

• agave-validator: Update PoH speed check to compare against current hash rate from a Bank (#2447)
• solana-test-validator: Add --clone-feature-set flag to mimic features from a target cluster (#2480)
• solana-genesis: the --cluster-type parameter now clones the feature set from the target cluster (#2587)
• unified-scheduler as default option for --block-verification-method (#2653)
• warn that thread-local-multi-iterator option for --block-production-method is deprecated (#3113)

• Breaking
  • SDK:
    • Support for Borsh v0.9 removed, please use v1 or v0.10 (#1440)
    • Copy is no longer derived on Rent and EpochSchedule, please switch to using clone() (solana-labs#32767)
    • solana-sdk: deprecated symbols removed
    • solana-program: deprecated symbols removed
  • RPC: obsolete and deprecated v1 endpoints are removed. These endpoints are: confirmTransaction, getSignatureStatus, getSignatureConfirmation, getTotalSupply, getConfirmedSignaturesForAddress, getConfirmedBlock, getConfirmedBlocks, getConfirmedBlocksWithLimit, getConfirmedTransaction, getConfirmedSignaturesForAddress2, getRecentBlockhash, getFees, getFeeCalculatorForBlockhash, getFeeRateGovernor, getSnapshotSlot getStakeActivation
  • Deprecated methods are removed from RpcClient and RpcClient::nonblocking
  • solana-client: deprecated re-exports removed; please import solana-connection-cache, solana-quic-client, or solana-udp-client directly
  • Deprecated arguments removed from agave-validator:
    • --enable-rpc-obsolete_v1_7 (#1886)
    • --accounts-db-caching-enabled (#2063)
    • --accounts-db-index-hashing (#2063)
    • --no-accounts-db-index-hashing (#2063)
    • --incremental-snapshots (#2148)
    • --halt-on-known-validators-accounts-hash-mismatch (#2157)
• Changes
  • central-scheduler as default option for --block-production-method (#34891)
  • solana-rpc-client-api: RpcFilterError depends on base64 version 0.22, so users may need to upgrade to base64 version 0.22
  • Changed default value for --health-check-slot-distance from 150 to 128
  • CLI: Can specify --with-compute-unit-price, --max-sign-attempts, and --use-rpc during program deployment
  • RPC's simulateTransaction now returns an extra replacementBlockhash field in the response when the replaceRecentBlockhash config param is true (#380)
  • SDK: cargo test-sbf accepts --tools-version, just like build-sbf (#1359)
  • CLI: Can specify --full-snapshot-archive-path (#1631)
  • transaction-status: The SPL Token amountToUiAmount instruction parses the amount into a string instead of a number (#1737)
  • Implemented partitioned epoch rewards as per SIMD-0118. Feature gate: #426. Specific changes include:
    • EpochRewards sysvar expanded and made persistent (#428, #572)
    • Stake Program credits now allowed during distribution (#631)
    • Updated type in Bank::epoch_rewards_status (#1277)
    • Partitions are recalculated on boot from snapshot (#1159)
    • epoch_rewards_status removed from snapshot (#1274)
  • Added unified-scheduler option for --block-verification-method (#1668)
  • Deprecate the fifo option for --rocksdb-shred-compaction (#1882)
    • fifo will remain supported in v2.0 with plans to fully remove in v2.1