Sorry but there isn't enough information here for anyone to be of help, please add more information and context.

I am using the WeasyPrint library with flask to make PDF reports, but when the application is deployed I have the dependency error ''gobject-2.0-0'', I already tried to install the dependencies but I don't know what else is necessary for it to work, continue without finding it, this is what and installed in the nixpacks file

[phases.setup]

nixPkgs = ["..."gobject-introspection"]

aptPkgs = ["...", "libgirepository1.0-dev","libcairo2-dev","python3-dev","python3-gi","python3-gi-cairo","gir1.2-gtk- 4.0","libpq-dev","gcc","python3-cffi","python3-brotli","libpango-1.0-0","libpangoft2-1.0-0","libjpeg-dev","libopenjp2- 7-dev","libffi-dev","libharfbuzz0b","libglib2.0-dev","gir1.2-gobject-2.0"]

and the error:

File "/opt/venv/lib/python3.10/site-packages/weasyprint/text/ffi.py", line 428, in

gobject = _dlopen(

File "/opt/venv/lib/python3.10/site-packages/weasyprint/text/ffi.py", line 417, in _dlopen

return ffi.dlopen(names[0]) # pragma: no cover

File "/opt/venv/lib/python3.10/site-packages/cffi/api.py", line 150, in dlopen

lib, function_cache = _make_ffi_library(self, name, flags)

File "/opt/venv/lib/python3.10/site-packages/cffi/api.py", line 832, in _make_ffi_library

backendlib = _load_backend_lib(backend, libname, flags)

File "/opt/venv/lib/python3.10/site-packages/cffi/api.py", line 827, in _load_backend_lib

raise OSError(msg)

OSError: cannot load library 'gobject-2.0-0': gobject-2.0-0: cannot open shared object file: No such file or directory. Additionally, ctypes.util.find_library() did not manage to locate a library called 'gobject-2.0-0'

For this type of build you will want to use a Dockerfile.

Thanks for the help, it's already working for me.

Awesome!