Want to get rid of Ruby RVM and/or have a controlled Python environment? These documents tell you how. The Guix solution is simple and at the same time robust.
Unlike apt, rpm, modules, Brew and Docker, GNU Guix allows you deploy software in a reproducible way and have full control over the dependency graph. You can run multiple versions of the same software (say Ruby 1.8.7, 2.1.1 and 2.3.0) with their fixated dependencies and no interference.
The software graph is getting increasingly complex over time. GNU Guix is the one solution that can handle that complexity. Rather than going for ad hoc solutions, such as Docker and Brew, we champion using the right tool for the job.
Dependency graph for python2-virtualenv. Notice perl5 is required because of openssl.
This is a list of useful Guix commands. The quick path to installation is using the binary tarball.
Add the guix PATH
export PATH=./guix-profile/bin:$PATH
Start the daemon (normally as root)
guix-daemon --build-users-group=guixbuild
Update guix itself
guix package -i guix
List all recommended environment settings
guix package --search-paths
List all python packages (that contain the word 'python')
guix package -A python
Install a version of python using a profile
guix package -p ~/opt/python-2.7.11 -i python@2.7.11
Now you can run this specific version of Python with
~/opt/python-2.7.11/bin/python -V
Such profiles can be shared with other users on the system!
Show the contents of a package
guix package --show=python2-virtualenv
Install Python2 with virtualenv (yes, you can do that)
guix package -i python2-virtualenv
which installs the binary distribution. If you want to build from source do
guix package -i python2-virtualenv --no-substitutes
and if you want to keep the build directories (so to visit them and see what is happening, especially on error)
guix package -i python2-virtualenv --no-substitutes -K
Find all dependencies
guix gc --references /gnu/store/b896978pyr8bfw5bbqv1d7w24163xpxg-python2-virtualenv-13.1.2
Plot a graph of dependencies
guix package -i graphviz
guix graph --type=references python2-virtualenv |dot -Gsize="10,10" -Gratio=0.7 -Tsvg -Nfontsize=48 > dag.svg
Rendering the figure above.
Validate the contents of the store against the database (there is also an option for repair)
guix gc --verify
List all unused paths (i.e., no longer symlinked) and after remove them
guix gc --list-dead
guix gc --collect-garbage
Spawns a shell or container (similar to Docker) where all declared inputs are available and all environment variables are set
guix environment --{pure,container} pkg
This repository contains Pjotr's notes on working with GNU Guix. I have gathered install and 'bootstrapping' Guix, hacking Guix packages with Guile and the philosophy of creating a Ruby environment and getting rid of RVM, bundler, virtualenv and the like.
You may want to also read Ricardo's article about Guix on compute clusters and Malcolm's guide.
Enjoy!
Pjotr Prins