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:
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add a new Aptfile to the root of my application with only “mupdf” listed
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commit and push the Aptfile
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THEN run heroku buildpacks:add --index 1 https://github.com/heroku/heroku-buildpack-apt
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push again so heroku will finish installing apt and mupdf
mupdf builds successful during the push
heroku buildpacks now returns
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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.
