freeze-requirements

A script to help creating and maintaining frozen requirements for pip, inspired by this Mozilla dev team blog post.

Frozen requirements contain the packages you specified, plus all their dependencies, with pinned versions.

For example if you have requirements.txt containing this:

pyramid
sqlalchemy

The frozen version would be:

# This file has been automatically generated, DO NOT EDIT!

# Frozen requirements for "requirements.txt"

pastedeploy==1.5.2
pyramid==1.5.1
repoze.lru==0.6
setuptools==5.5.1
sqlalchemy==0.9.7
translationstring==1.1
venusian==1.0
webob==1.4
zope.deprecation==4.1.1
zope.interface==4.1.1

Then you can use the frozen requirements in your deployment scripts with pip install -r requirements-frozen.txt --no-deps, and enjoy consistent deployments even if some packages are updated on pypi.

freeze-requirements can also put the downloaded source packages in a pypi-like directory structure on your web server, so you can speed up your deployments with pip install -r requirements-frozen.txt --index-url http://mywebserver.com/pypi-mirror, and also build wheels to speed up deployments even more.

Installation

Install from pypi:

$ pip install freeze-requirements

Or from source:

$ ./setup.py install

Examples

Create frozen versions of two requirements files (they will be named requirements-frozen.txt and requirements2-frozen.txt in this example, the -frozen suffix can be customized with --separate-requirements-suffix):

$ freeze-requirements freeze --separate-requirements requirements.txt requirements2.txt

Merge multiple requirements in a single file:

$ freeze-requirements freeze --merged-requirements requirements-merged.txt requirements.txt requirements2.txt

Use a cache to avoid reprocessing known requirements files:

$ freeze-requirements freeze --cache-dependencies requirements.txt

Download source packages and build wheels for them, putting them in a pypi-like directory structure:

$ freeze-requirements freeze --output-dir /path/to/my/pypi --build-wheels requirements.txt

News

0.4.4

Added workarounds for packages with non-string versions in their setup.py (bugs were caused by unittest2 0.7.1, see https://code.google.com/p/unittest-ext/issues/detail?id=84).

0.4.3

Added automatic conflicts resolution.

0.4.2

Added –no-rebuild-wheels flag, to avoid rebuilding wheels already present in –output-dir.

0.4.1

First proper release

Metadata

Release files for freeze-requirements 0.5.0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for freeze-requirements 0.5.0
File	Size	Uploaded
freeze-requirements-0.5.0.tar.gz	10.5 kB	May 6, 2015	Details

Release files / freeze-requirements-0.5.0.tar.gz

Download URL	freeze-requirements-0.5.0.tar.gz
Size	10.5 kB
Tags	Source
SHA-256 checksum How to use checksums	`73f57e318e9ea79aa741fc4010eb9348cab90a88d2290a90d8688ae8f074af09`
BLAKE2b-256 checksum How to use checksums	`6bf05319b6bbb8493bf01ead478965b6cc9b653c1132a9e7d813dfdf3fbe5474`
Upload date	May 6, 2015
Uploaded using Trusted Publishing? What is trusted publishing?	No