Version 0.18.44.7

November 23, 2025

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This release brings major infrastructure upgrades and platform support improvements, including a complete database engine upgrade, ARM architecture support, and automated deployment capabilities.

Major Changes

Berkeley DB Upgrade (v4 → v18.1.40)

  • Complete database engine upgrade from Berkeley DB 4.8 to 18.1.40
  • Standardized BDB 18.1.40 across all platforms (Linux, Windows, macOS, ARM64)
  • Added new installation script contrib/install_db18.sh for automated BDB 18 setup
  • Fixed MinGW compilation issues with custom atomics patch for Windows builds
  • Improved database performance and reliability
  • Fixed documentation installation issues in BDB build process

ARM Architecture Support

  • Native ARM64 (aarch64) support added for Linux and macOS platforms
  • Apple Silicon (M1/M2/M3+) native support for macOS
  • New GitHub Actions workflow for automated ARM64 builds
  • Full compatibility with ARM-based servers and devices
  • Optimized performance on Apple Silicon Macs and ARM server deployments
  • Native builds eliminate Rosetta 2 translation overhead on M1+ Macs

Updated Application Icon

  • New redesigned TALER icon now used in the application
  • Modern icon design adopted by the TALER community
  • Consistent branding across all platforms
  • Updated application icons for Windows, macOS, and Linux

Network Infrastructure Updates

  • New DNS seeds added: taler.tech domain seeds configured
  • Added fixed IP seed for improved network reliability
  • Enhanced peer discovery and network connectivity

Automated Deployment & CI/CD

  • Docker multi-architecture support (linux/amd64, linux/arm64)
  • Automated Docker image publishing to Docker Hub
  • 18x speedup in Docker builds using native architecture runners
  • GitHub Actions workflows for all platforms:
    • Linux x64 and ARM64
    • Windows x64
    • macOS (Apple Silicon)
  • Concurrency controls to optimize CI/CD resources
  • Automated release artifact generation

Build System Enhancements

  • Qt 5.9.6 patch for GCC 11+ compatibility
  • Fixed Qt moc compilation for cross-platform builds
  • Improved dependency management (protobuf, libzmq5, libqrencode4)
  • Better handling of MinGW cross-compilation
  • Fixed executable permissions for build scripts

Technical Details

  • Version: 0.18.44.7
  • Berkeley DB: 18.1.40 (upgraded from 4.8)
  • Supported Platforms:
    • Linux x64, Linux ARM64
    • Windows x64
    • macOS (Apple Silicon)
  • Docker Images: Available for linux/amd64 and linux/arm64
  • Qt Version: 5.9.6 with GCC 11+ patches

Breaking Changes

  • Berkeley DB upgraded from 4.8 to 18.1.40 - wallet.dat files are NOT backward compatible
  • Once upgraded to this version, wallet.dat files cannot be used with older TALER versions
  • This is a one-way upgrade

Upgrade Notes

  • Warning: After upgrading, you cannot downgrade to older TALER versions
  • Wallet.dat files will be automatically upgraded to BDB 18.1.40 format on first use
  • The BDB upgrade is required for ARM64 platform support (BDB 4.8 lacks ARM64 mutex support)
  • Docker users should pull the latest multi-arch images
  • See README-DOCKER.md for updated deployment instructions