Shared library error on heroku-18 stack

[macowie]

Just noting the buildpack doesn't work as-is on the new stack.

wkhtmltopdf: error while loading shared libraries: libXrender.so.1: cannot open shared object file: No such file or directory

[jessamynsmith]

I found that adding the following to my Aptfile got wkhtmltopdf working again.

libxrender1
libssl1.0.0

For a working example, see this app https://github.com/jessamynsmith/django-wkhtmltopdf-example

[benoitongit]

Looks like libxrender1 was added in heroku-18: https://devcenter.heroku.com/articles/stack-packages.

But now getting this error:
Command Error: /app/vendor/bundle/ruby/2.5.0/gems/wkhtmltopdf-binary-edge-0.12.5.0/libexec/wkhtmltopdf-linux-amd64: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

Would it be fantastic if the buildpack could install all missing dependencies :)

[sorentwo]

Agreed, it would be great to have missing dependencies installed for the heroku-18 stack. A pull request is welcome!

[jathayde]

LibPNG seems to be in the list as well (not sure when it was added):
libpng12-0 | 1.2.50-1​ubuntu2.14.04.3

[lkrasovsky]

Looks like libxrender1 was added in heroku-18: https://devcenter.heroku.com/articles/stack-packages.

But now getting this error:
Command Error: /app/vendor/bundle/ruby/2.5.0/gems/wkhtmltopdf-binary-edge-0.12.5.0/libexec/wkhtmltopdf-linux-amd64: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

Would it be fantastic if the buildpack could install all missing dependencies :)

do you remember how did you fix it? I have the same problem