Wednesday, January 17, 2018
I've upgraded to rails 5.2 and am implementing ActiveStorage. ActiveStorage uses mutool for PDF processing. I have successfully installed mutool locally using homebrew.
mutool is a bit confusing.
rails docs claim to require "mutool",
homebrew installs "mupdf-tools",
and heroku wants "mupdf".
I have successfully installed apt and mupdf on heroku following these steps:
- add a new Aptfile to the root of my application with only "mupdf" listed
- commit and push the Aptfile
- THEN run heroku buildpacks:add --index 1 https://github.com/heroku/heroku-buildpack-apt
- push again so heroku will finish installing apt and mupdf
mupdf builds successful during the push
heroku buildpacks now returns
1. https://github.com/heroku/heroku-buildpack-apt
2. heroku/ruby
If I refresh a page calling for a variant on a PDF, the image fails to process and the job kicks back the following error:
Errno::ENOENT: No such file or directory - mutool
It seems mutool and mupdf are synonomous...so, I tried swapping out mutool for mupdf in my Aptfile...that failed to build from "...not found'.
Anyone know what action I need to take?
PS: This is part of implementing rails 5.2 using ActiveStorage.
# UPDATE
I added mupdf-tools to Aptfile and that seems to fix the "no such file or directory" error. I don't know for sure because a new errors surfaces
MiniMagick::Invalid: `identify /tmp/mini_magick20180105-4-pvub9r` failed with error: identify.im6: no decode delegate for this image format `/tmp/mini_magick20180105-4-pvub9r' @ error/constitute.c/ReadImage/544.
MiniMagick::Error: `identify -format %m %w %h %b /tmp/ActiveStorage20180105-4-1f46tem[0]` failed with error: identify.im6: no decode delegate for this image format `/tmp/ActiveStorage20180105-4-1f46tem' @ error/constitute.c/ReadImage/544.
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