Cannot locate libvips.so.42

Hello, I just installed vips from source on my system and here are the relevant outputs after the install:

$ ldconfig -p | grep vips
	libvips.so.42 (libc6,x86-64) => /usr/local/lib/libvips.so.42
	libvips.so (libc6,x86-64) => /usr/local/lib/libvips.so
	libvips-cpp.so.42 (libc6,x86-64) => /usr/local/lib/libvips-cpp.so.42
	libvips-cpp.so (libc6,x86-64) => /usr/local/lib/libvips-cpp.so

$ echo $LD_LIBRARY_PATH 
$LD_LIBRARY_PATH:/usr/local/lib/

$ echo $C_INCLUDE_PATH 
$C_INCLUDE_PATH:/usr/local/include/

$ echo $CPLUS_INCLUDE_PATH 
$CPLUS_INCLUDE_PATH:/usr/local/include/

$ ls /usr/local/include/
blosc-export.h  blosc.h  jconfig.h  jerror.h  jmorecfg.h  jpeglib.h  openjpeg-2.3  openslide  vips  zconf.h  zlib.h

But after installing pyvips with:

pip install -U git+https://github.com/libvips/pyvips.git

And doing:

import pyvips

I get this error:

>>> import pyvips
Traceback (most recent call last):
  File "/home/ekami/Programs/anaconda3/envs/dl/lib/python3.7/site-packages/pyvips/__init__.py", line 19, in <module>
    import _libvips
ModuleNotFoundError: No module named '_libvips'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/ekami/Programs/anaconda3/envs/dl/lib/python3.7/site-packages/pyvips/__init__.py", line 70, in <module>
    vips_lib = ffi.dlopen(_vips_libname)
  File "/home/ekami/Programs/anaconda3/envs/dl/lib/python3.7/site-packages/cffi/api.py", line 146, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "/home/ekami/Programs/anaconda3/envs/dl/lib/python3.7/site-packages/cffi/api.py", line 828, in _make_ffi_library
    backendlib = _load_backend_lib(backend, libname, flags)
  File "/home/ekami/Programs/anaconda3/envs/dl/lib/python3.7/site-packages/cffi/api.py", line 823, in _load_backend_lib
    raise OSError(msg)
OSError: cannot load library 'libvips.so.42': /usr/lib/librsvg-2.so.2: undefined symbol: cairo_tag_end.  Additionally, ctypes.util.find_library() did not manage to locate a library called 'libvips.so.42'

I’m on Manjaro (Arch linux) and my conda env is using Python 3.7.2. Any idea how I can solve this? Thank you.

[NeelKanwal]

There is actually a cleaner solution to the ugly one I found. Just use:

conda install -c conda-forge librsvg
conda install -c conda-forge libiconv 

And you’re done 😃

It does not work for me

[jcupitt]

Yes that’s a classic conda / non-conda problem 😦 It’s very unfortunate that there are at least four versions of libjpeg in common use, and you (often) can’t mix them in one executable.

Wait until you try to load something via libMagick.