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Install bagit with Homebrew
Library for creation, manipulation, and validation of bags. Version 1.9.0 via Homebrew; verified from local package data.
install
Additional install commands
overview
Package summary
Library for creation, manipulation, and validation of bags
Project links
Commands and aliases
- bagit.py
history
Project history and usage
bagit is the Library of Congress-maintained Python library and command-line utility for creating, reading, and validating BagIt packages. Its importance comes from the BagIt format more than from the code itself: BagIt is a simple directory layout for reliable transfer and preservation of arbitrary digital content.
Project history
The BagIt format was developed in the digital-preservation community and standardized as RFC 8493 in October 2018 by contributors from the California Digital Library, Stanford Libraries, the Library of Congress, and others. The RFC describes BagIt as a filesystem hierarchy with payload files, tag files, manifests, and checksum validation rather than as a compressed archive format.
The bagit-python repository was created under the Library of Congress GitHub organization in 2013. Its README presents the package as both a Python module and a `bagit.py` command-line program for turning directories into bags, updating bag metadata, regenerating manifests, and validating bags.
Adoption history
RFC 8493 notes BagIt use across preservation organizations including the Library of Congress, Dryad Data Repository, NSF DataONE, the Rockefeller Archive Center, and university libraries including Cornell, Purdue, Stanford, Ghent University, New York University, and the University of California.
In package-manager culture, `bagit` is a small but durable archival utility: Homebrew packages it as a formula, and the formula API reported stable version 1.9.0 with 19 installs in the previous 30 days as of June 30, 2026.
How it is used
Common CLI workflows are `bagit.py /path/to/dir` to create a bag, `bagit.py --validate /path/to/bag` to validate manifests and payloads, and checksum flags such as `--sha256` or `--sha512` to control manifest generation. The module API exposes the same ideas through `bagit.make_bag`, `bagit.Bag`, `save`, and `validate`.
Why package nerds care
bagit is a package nerd's preservation tool: it turns a normal directory tree into a self-describing, checksum-verifiable transfer object without forcing data into tar or zip. It is the kind of small CLI that matters in archives, data repositories, and reproducible handoffs precisely because its format is boring and inspectable with ordinary filesystem tools.
Timeline
- 2013: LibraryOfCongress/bagit-python repository created on GitHub.
- 2018: BagIt File Packaging Format v1.0 published as RFC 8493.
- 2026: Homebrew formula reports stable bagit 1.9.0.
Related projects
- RFC 8493 lists implementations in several languages, including Python, Ruby, Java, Perl, and PHP.
- The broader BagIt ecosystem includes archival repositories and preservation workflows that exchange bags between institutions.
Sources
security posture
Risk level: green
library-like package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- library-like package without higher-risk signals
Signals
- metadata:library-like
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 1 platform targets.
- Installs with 1 runtime dependencies.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
bagit.py | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-07-08
manager version1.9.0
manager updated
local dataok
upstreamnot checked
latest detectednot detected
https://libraryofcongress.github.io/bagit-python/
- infoNo package-manager update timestamp was available.low confidence
- infoRelease/tag comparison is only available for GitHub repositories.https://libraryofcongress.github.io/bagit-python/none confidence
install metadata
Package metadata
| Package key | brew:bagit |
|---|---|
| Version | 1.9.0 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/bagit |
| Homepage | https://libraryofcongress.github.io/bagit-python/ |
| Repository | https://github.com/LibraryOfCongress/bagit-python |
| Upstream docs | https://libraryofcongress.github.io/bagit-python |
| License | CC0-1.0 |
| Source archive | https://files.pythonhosted.org/packages/a1/a0/8866b4c6f894af0eb10e4964157f3241dd4117700fc010e7825471d51a13/bagit-1.9.0.tar.gz |
| Dependencies | python@3.14 |
| Bottle | available (on all) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | bagit |
| Version Scheme | 1 |
| Revision | 0 |
| Head Version | HEAD |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- package relationship graph
- package version freshness
- package-page enrichment