"introspection typelib not found" with python 3.7 on Windows 10 64 Bit

[sattlma]

Issue:

Hi folks,

I just can't get my little python program running on Windows 10 64 Bit.

import gi
from gi.repository import Gtk

gives

.....>python testi.py
Traceback (most recent call last):
  File "testi.py", line 2, in <module>
    from gi.repository import Gtk
  File "C:\Anaconda3\envs\python3.7\lib\site-packages\gi\importer.py", line 133, in load_module
    'introspection typelib not found' % namespace)
ImportError: cannot import name Gtk, introspection typelib not found

Setting GI_TYPELIB_PATH to C:\Anaconda3\envs\python3.7\Library\lib\girepository-1.0 where the .typelib files are doesn't change anything.

Do you have any idea?

Thanks!

Environment (conda list):

$ conda list
# packages in environment at C:\Anaconda3\envs\python3.7:
#
# Name                    Version                   Build  Channel
cairo                     1.16.0            hc1b38c8_1000    conda-forge
certifi                   2018.11.29            py37_1000    conda-forge
gettext                   0.19.8.1          hb01d8f6_1001    conda-forge
glib                      2.58.2            hc0c2ac7_1001    conda-forge
gobject-introspection     1.58.2          py37h1800f87_1000    conda-forge
icu                       58.2                     vc14_0    conda-forge
libffi                    3.2.1             h6538335_1005    conda-forge
libiconv                  1.15              hfa6e2cd_1004    conda-forge
libpng                    1.6.36            h7602738_1000    conda-forge
m2w64-gcc-libgfortran     5.3.0                         6
m2w64-gcc-libs            5.3.0                         7
m2w64-gcc-libs-core       5.3.0                         7
m2w64-gmp                 6.1.0                         2
m2w64-libwinpthread-git   5.0.0.4634.697f757               2
msys2-conda-epoch         20160418                      1
pcre                      8.41              h6538335_1003    conda-forge
pip                       19.0.1                   py37_0    conda-forge
pixman                    0.34.0            hfa6e2cd_1003    conda-forge
pycairo                   1.17.1           py37h511c3a9_0
pygobject                 3.30.4          py37h5e4a255_1000    conda-forge
python                    3.7.1             hc182675_1000    conda-forge
setuptools                40.7.1                   py37_0    conda-forge
vc                        14                            0    conda-forge
vs2015_runtime            14.0.25420                    0    conda-forge
wheel                     0.32.3                   py37_0    conda-forge
wincertstore              0.2                   py37_1002    conda-forge
zlib                      1.2.11            h2fa13f4_1004    conda-forge

Details about conda and system ( conda info ):

$ conda info
     active environment : python3.7
    active env location : C:\Anaconda3\envs\python3.7
            shell level : 2
       user config file : C:\Users\user\.condarc
 populated config files : C:\Users\user\.condarc
          conda version : 4.5.11
    conda-build version : 1.19.0
         python version : 3.5.6.final.0
       base environment : C:\Anaconda3  (writable)
           channel URLs : https://conda.anaconda.org/conda-forge/win-64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://repo.anaconda.com/pkgs/main/win-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/free/win-64
                          https://repo.anaconda.com/pkgs/free/noarch
                          https://repo.anaconda.com/pkgs/r/win-64
                          https://repo.anaconda.com/pkgs/r/noarch
                          https://repo.anaconda.com/pkgs/pro/win-64
                          https://repo.anaconda.com/pkgs/pro/noarch
                          https://repo.anaconda.com/pkgs/msys2/win-64
                          https://repo.anaconda.com/pkgs/msys2/noarch
          package cache : C:\Anaconda3\pkgs
                          C:\Users\user\AppData\Local\conda\conda\pkgs
       envs directories : C:\Anaconda3\envs
                          C:\Users\user\AppData\Local\conda\conda\envs
                          C:\Users\user\.conda\envs
               platform : win-64
             user-agent : conda/4.5.11 requests/2.19.1 CPython/3.5.6 Windows/10 Windows/10.0.16299
          administrator : False
             netrc file : None
           offline mode : False

[pkgw]

Hi,

I believe the problem is that you're trying to import the Gtk library, which conda-forge doesn't provide. pygobject provides the general framework for access GObject-based libraries in Python, but the underlying library itself needs to be available. conda-forge provides Gtk2 on Linux and Mac, but we don't provide Gtk3 at all, and Gtk3 is the only version that supports gobject-introspection, if I recall correctly.

So, unfortunately I don't think we can do anything about this until we provide Gtk3 on Windows. That's definitely something in which there is interest, but Gtk3 takes a long time to compile and has a lot of dependencies, so it's a challenge.

As such, I'm going to close this bug, but feel free to comment or reopen if you believe there's something on the pygobject side that needs addressing.

[KarimaAL]

Is Gtk3 available now on windows?

[tschoonj]

Yes, it has been for a year or so. Also Gtk4 by the way.

[KarimaAL]

Thank you