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https://github.com/pjotrp/guix-notes

This repo has moved to https://gitlab.com/pjotrp/guix-notes Notes on Guix
https://github.com/pjotrp/guix-notes

Last synced: 2 months ago
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This repo has moved to https://gitlab.com/pjotrp/guix-notes Notes on Guix

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README 

        
# Introduction



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](./REPRODUCIBLE.org) 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.



![alt text](https://github.com/pjotrp/guix-notes/raw/master/python2-virtualenv.png "Dependency graph for python2-virtualenv")



Dependency graph for python2-virtualenv. Notice perl5 is required

because of openssl.



# Useful Guix commands



This is a list of useful Guix commands. The quick path to

installation is using the [binary tarball](https://github.com/pjotrp/guix-notes/blob/master/INSTALL.org#binary-installation).



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 [email protected]



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



# Other information



This repository contains Pjotr's notes on working with GNU Guix. I

have gathered [install and 'bootstrapping'

Guix](https://github.com/pjotrp/guix-notes/blob/master/INSTALL.org),

[hacking](https://github.com/pjotrp/guix-notes/blob/master/HACKING.org)

Guix packages with Guile and the philosophy of creating a

[Ruby](https://github.com/pjotrp/guix-notes/blob/master/RUBY.org)

environment and getting rid of RVM, bundler, virtualenv and the like.



You may want to also read [Ricardo's

article](http://elephly.net/posts/2015-04-17-gnu-guix.html) about Guix

on compute clusters and [Malcolm's

guide](https://github.com/malcook/sce/blob/master/README.org).



Enjoy!



Pjotr Prins