Installing pdftotext library on heroku

pdftotext library is a requirement in requirements.txt. While trying to push to heroku, I get the following error:

remote:          Running setup.py install for pdftotext: started  remote:            Running setup.py install for pdftotext: finished with status 'error'  remote:            Complete output from command /app/.heroku/python/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-rnbekz45/pdftotext/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-o0if2tl3-record/install-record.txt --single-version-externally-managed --compile:  remote:            /app/.heroku/python/lib/python3.6/distutils/dist.py:261: UserWarning: Unknown distribution option: 'long_description_content_type'  remote:              warnings.warn(msg)  remote:            running install  remote:            running build  remote:            running build_ext  remote:            building 'pdftotext' extension  remote:            creating build  remote:            creating build/temp.linux-x86_64-3.6  remote:            gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DPOPPLER_CPP_AT_LEAST_0_30_0=0 -I/app/.heroku/python/include/python3.6m -c pdftotext.cpp -o build/temp.linux-x86_64-3.6/pdftotext.o -Wall  remote:            pdftotext.cpp:3:10: fatal error: poppler/cpp/poppler-document.h: No such file or directory  remote:             #include <poppler/cpp/poppler-document.h>  remote:                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  remote:            compilation terminated.  remote:            error: command 'gcc' failed with exit status 1  remote:              remote:            ----------------------------------------  remote:        Command "/app/.heroku/python/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-rnbekz45/pdftotext/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-o0if2tl3-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-rnbekz45/pdftotext/  remote:  !     Push rejected, failed to compile Python app.  remote:   remote:  !     Push failed

Normally I'd solve this by installing libpoppler-cpp-dev with apt. But on heroku, I don't have root access to do that. Is there a solution for this?

Sincerely yours,

 Joel G Mathew

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