Install tikz magic: need to set environment variable

[memeplex]

I'm trying to make the jupyter tikz magic work in my binder.

First I'm installing some deb packages:

cat apt.txt 
texlive-latex-extra
pdf2svg
imagemagick

Next I add this requirement:

git+git://github.com/mkrphys/ipython-tikzmagic.git

That's fine. The problem is the absurdly restrictive policy imagemagick sets by default since a few months. Because I'm unable to run sudo in postBuild, I have to change it for my user:

mkdir -p ~/.magick
sed 's@rights="none" pattern="PDF" />@rights="all" pattern="PDF" />@' /etc/ImageMagick-6/policy.xml > ~/.magick/policy.xml
export MAGICK_CONFIGURE_PATH="/app/.magick/:/etc/ImageMagick-6/"

But the variable MAGICK_CONFIGURE_PATH is not set in my jupyter session. I've seen some example repo in your site that sets the PATH environment variable like this. If that's not possible, should I write a ~/.profile or ~/.bashrc file?

[memeplex]

Ok, I was able to set the environment using .profile, but it doesn't solve my problem because of ImageMagick/ImageMagick#1342. In brief, I need to change the policies under /etc. Is that possible? I can't run sudo at all in the postBuild script.

[betatim]

You can't run things as root and there are no plans to change this.

Setting environment variables when your session starts on binder is handled by a start file: https://repo2docker.readthedocs.io/en/latest/config_files.html#start-run-code-before-the-user-sessions-starts but from skimming the issue you linked it doesn't sound like it'll help you :-(

If you really absolutely need to sudo the way forward is (unfortunately) to create your own Dockerfile. https://mybinder.readthedocs.io/en/latest/tutorials/dockerfile.html#preparing-your-dockerfile has some hints on what needs to be in your Dockerfile for it to work. We also have https://github.com/binder-examples/minimal-dockerfile but this is really the minnimal working example (it doesn't even copy the contents of the repository into the image).

edit: can run -> can't run

[memeplex]

You can run things as root and there are no plans to change this.

You meant "don't", didn't you?

I'm trying to get this working with graphicsmagick. This is not the first headache this paranoid imagemagick default policy has caused me.

[memeplex]

For future reference: it works just fine using the imagemagick interface of graphicsmagick. This is all that's needed to get tikz working in pybinder:

• apt.txt

texlive-latex-extra
pdf2svg
ghostscript
graphicsmagick-imagemagick-compat

• requirements.txt

git+git://github.com/mkrphys/ipython-tikzmagic.git

[betatim]

You meant "don't", didn't you?

Ah yes, updated my original comment.