solana_kit_sysvars 0.1.0

System variable access for the Solana Kit Dart SDK.

Changelog

All notable changes to this package will be documented in this file.

0.1.0 - 2026-02-21

Notes

• First 0.1.0 release of this package.

0.0.2 - 2026-02-21

Features

Initial scaffold for 17 higher-level packages including the full RPC stack,

program interaction layers, and the umbrella package. Each package has its pubspec.yaml with correct workspace dependencies, shared analysis_options.yaml, and an empty barrel export file ready for implementation.

Package groups scaffolded:

• RPC Stack: rpc_types (base types), rpc_spec_types, rpc_spec (specification), rpc_api (method definitions), rpc_parsed_types, rpc_transformers (response processing), rpc_transport_http (HTTP transport), rpc (primary client)
• RPC Subscriptions: rpc_subscriptions_api, rpc_subscriptions_channel_websocket, rpc_subscriptions (WebSocket subscription client)
• Programs & Accounts: accounts (fetching/decoding), programs (utilities), program_client_core (base client), sysvars (system variables)
• Transaction Lifecycle: transaction_confirmation (polling/confirmation)
• Umbrella: solana_kit (re-exports all packages for convenience)

Implement sysvars package ported from @solana/sysvars.

solana_kit_sysvars (52 tests):

• 10 sysvar address constants (Clock, EpochRewards, EpochSchedule, Instructions, LastRestartSlot, RecentBlockhashes, Rent, SlotHashes, SlotHistory, StakeHistory)
• SysvarClock codec (40 bytes): slot, epochStartTimestamp, epoch, leaderScheduleEpoch, unixTimestamp
• SysvarEpochSchedule codec (33 bytes): slotsPerEpoch, leaderScheduleSlotOffset, warmup, firstNormalEpoch, firstNormalSlot
• SysvarEpochRewards codec (81 bytes): distributionStartingBlockHeight, numPartitions, parentBlockhash, totalPoints (u128), totalRewards, distributedRewards, active
• SysvarRent codec (17 bytes): lamportsPerByteYear, exemptionThreshold (f64), burnPercent
• SysvarLastRestartSlot codec (8 bytes), SysvarSlotHashes variable-size array codec
• SysvarSlotHistory bitvector codec (131,097 bytes) with discriminator validation
• SysvarRecentBlockhashes (deprecated) and SysvarStakeHistory variable-size array codecs
• fetchSysvar* async RPC functions for each sysvar type
• fetchEncodedSysvarAccount generic fetch function