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buildguard

Catch upstream Python dependency breakage before it burns CI time.

buildguard runs a clean install check for your pinned Python dependencies and fails fast when upstream package ecosystem drift breaks installation.

Start with the public repo or PyPI package. If your team wants to use it in business or commercial CI, buy a commercial license and keep the same workflow.

Buy Commercial License View on GitHub View on PyPI Try It Now License Model

CLI Example

buildguard check requirements.txt

Clean Install Validation

Validates that your pinned dependencies still install successfully in a fresh environment.

Public Repo + PyPI

Try it from PyPI, inspect the code on GitHub, and keep commercial use on a separate paid license path.

Actionable Failure Output

Surfaces the most likely failing dependency and a concise diagnosis instead of forcing you through raw pip output.

Try it now

Install from PyPI

python3 -m pip install buildguard

Best if you want to evaluate the tool quickly on a real requirements file.

Run a check

buildguard check requirements.txt
buildguard check requirements.txt --json

Text output is human-friendly, and JSON output is ready for automation.

Why buildguard exists

A CI pipeline can look healthy even when dependency installation has already failed.

One failure mode is simple: a pinned dependency disappears from PyPI or becomes unavailable for a given Python version or platform.

buildguard exists to catch that class of problem early and explicitly, before the rest of the pipeline wastes time.

How it works

Create a temporary clean virtual environment.
Install your requirements.txt from scratch.
Capture install failures, likely failing package, and useful error output.
Exit non-zero so CI stops before the rest of the build wastes time.

Distribution and license model

GitHub: public source code at github.com/heffman/buildguard
PyPI: installable package at pypi.org/project/buildguard
Personal use: free for evaluation and other non-commercial use
Commercial use: paid Gumroad purchase covers internal team and business use

No activation, unlock flow, online verification, or license file is required. The commercial purchase changes the legal terms, not the way the tool behaves.

Example output

buildguard check: sample-bad-requirements.txt
python: python3.6
venv: /tmp/buildguard-gheksm_w

FAIL

pip install -r sample-bad-requirements.txt exited with code 1

likely failing dependency:
mysql-connector-python==8.0.11

pip error summary:
ERROR: Could not find a version that satisfies the requirement mysql-connector-python==8.0.11
ERROR: No matching distribution found for mysql-connector-python==8.0.11

diagnosis:
No installable distribution was found for mysql-connector-python==8.0.11 on the current index/Python/platform.

summary:
elapsed_seconds=11.2
pip_exit_code=1

What you get

Public GitHub repo access
PyPI package for installation
Quickstart docs and CI examples
Machine-readable JSON output for automation
Paid commercial license for internal team use
No activation or license-file enforcement

Use cases

Preflight dependency checks

Fail fast before tests, packaging, or deployment steps run on a broken dependency set.

Legacy dependency stack validation

Validate older Python environments against upstream package drift without waiting for a broken CI build to surprise you.

Buy Commercial License GitHub Repo PyPI Package Try It Now

Refund policy: 7 days if buildguard is non-functional in your environment and support cannot resolve the issue.