add-determinism ☆

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Description:
Build postprocessor to reset metadata fields for build reproducibility

Type: Formula | Latest Version: 0.7.2@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: reproducible-builds security build-tool devops deterministic

Install: brew install add-determinism

About:
add-determinism is a build postprocessor that enhances reproducible builds by resetting non-essential metadata fields in output files. It zeros out timestamps, normalizes filesystem ordering, and strips build path references to ensure bit-for-bit identical outputs across different build environments. This tool is essential for security-conscious development and verifiable software supply chains.

Key Features:

Resets timestamps and metadata for reproducible builds
Supports multiple file formats (JAR, ZIP, PNG, etc.)
Normalizes filesystem ordering in archives
Strips build path references
Configurable via command-line options

Use Cases:

Creating reproducible builds for security verification
Normalizing build artifacts for consistent deployment
Preparing packages for deterministic distribution

Alternatives:

strip-nondeterminism – Similar functionality, but add-determinism is more actively maintained and supports additional file formats
faketime – Controls build time environment but doesn't handle archive normalization or format-specific metadata

License: GPL-3.0-or-later

Dependencies: libselinux

Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, sonoma, arm64_linux, x86_64_linux

Version History

Detected	Version	Rev	Change	Commit
Oct 30, 2025 5:22pm		0	VERSION_BUMP	67e657c3
Oct 9, 2025 11:25pm		0	VERSION_BUMP	d748b207