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Sifr 0.1.0 is the first stable compiler release. It ships one qualified compiler, sysroot, standalone installer, governed release-index record, and VS Code compatibility contract.

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Highlights

  • Python-shaped source compiles through Sifr’s statically checked HIR and Rust backend to a native binary.
  • Ownership, Option, and Result contracts reject unsafe or partial user paths during compilation.
  • The standalone installer and sifr self update verify the governed immutable installer, target archive, and sysroot digests.
  • sifr.sifr-vscode 0.2.0 provides editor diagnostics and formatting through the native sifr lsp --stdio server, plus compiler-backed check, lint, and test actions and a generated-Rust preview.
  • Rust interop support is limited to the categories and evidence scopes in the stable claims table.

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Compatibility

The standalone release supports macOS 15.0 and glibc 2.39 on the four targets listed in stable compatibility. The VS Code extension advertises compiler range >=0.1.0,<0.2.0.

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Installation

For a pinned install:
The governed release index uses schema_version: 2. Unknown, withdrawn, and -rc.N versions are rejected.

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Known boundaries

  • Windows standalone installation and package-manager distribution are not included.
  • Alpha and beta remain explicit preview channels.
  • Runtime work marked future-owned in the Rust compatibility matrix is not advertised as stable support.
  • The first stable release has no rollback predecessor. A release incident recovers through a protected incident roll-forward.