Stuck on an issue?

I had some difficulty converting pygobject into a wheel. Perhaps I missed a step or there is a command I needed to use of which I did not. I did try several things like, --fatten, etc.

My goal was to get pygobject into a python 3.7 install as it is difficult to build, and when googling I found out that it was on aconda cloud.

I used a fresh miniconda install with just conda install -c conda-forge pygobject conda-press and whatever else miniconda installs itself when running that command.

I first tried the --subdir win-64 pygobject=3.30.5=py37h5e4a255_0 to do it in batch, but the tree had too many conflicts.

Package cairo conflicts for:
gobject-introspection=1 -> cairo[version='>=1.16.0,<1.17.0a0']
pycairo -> cairo[version='1.14.*|>=1.14.10,<1.15.0a0|>=1.14.10,<2.0a0|>=1.14.12,<1.15.0a0|>=1.14.12,<2.0a0|>=1.16.0,<1.17.0a0']
Package vc conflicts for:
libffi[version='>=3.2.1,<3.3.0a0'] -> vc[version='14.*|9.*']
and so forth

So then I proceeded to do it by the individual packages, the tar.bzs. I would conda press a tar.bz starting wtih pygobject in my aconda prompt, then pip install in a normal command prompt, looking for dependencies. If it did not have a tar.bz like the vs2015-runtimes package, I would use a --subdir win-64 command to make the wheel.

I ended up with

cairo-1.16.0-1002_h60892f0-py2.py3-none-win_amd64.whl
gettext-0.19.8.1-1002_hb01d8f6-py2.py3-none-win_amd64.whl
glib-2.58.3-1002_hc0c2ac7-py2.py3-none-win_amd64.whl
gobject_introspection-1.58.2-1002_py37h1800f87-cp37-cp37m-win_amd64.whl
icu-64.2-1_he025d50-py2.py3-none-win_amd64.whl
libffi-3.2.1-1006_h6538335-py2.py3-none-win_amd64.whl
libiconv-1.15-7_h1df5818-py2.py3-none-win_amd64.whl
libpng-1.6.37-0_h7602738-py2.py3-none-win_amd64.whl
m2w64_gcc_libgfortran-5.3.0-6_6-py2.py3-none-win_amd64.whl
m2w64_gcc_libs-5.3.0-7_7-py2.py3-none-win_amd64.whl
m2w64_gcc_libs_core-5.3.0-7_7-py2.py3-none-win_amd64.whl
m2w64_gmp-6.1.0-2_2-py2.py3-none-win_amd64.whl
m2w64_libwinpthread_git-5.0.0.4634.697f757-2_2-py2.py3-none-win_amd64.whl
msys2_conda_epoch-20160418-1_1-py2.py3-none-win_amd64.whl
pcre-8.41-1003_h6538335-py2.py3-none-win_amd64.whl
pixman-0.38.0-1003_hfa6e2cd-py2.py3-none-win_amd64.whl
pygobject-3.30.5-0_py37h5e4a255-cp37-cp37m-win_amd64.whl
vc-14.1-3_h21ff451-py2.py3-none-win_amd64.whl
vs2015_runtime-14.15.26706-4_h3a45250-py2.py3-none-win_amd64.whl
zlib-1.2.11-3_h62dcd97-py2.py3-none-win_amd64.whl

Pip did not have any errors except for gobject_introspection and pygobjects itself as follows:

C:\Miniconda3\wheels>python -m pip install gobject_introspection-1.58.2-1002_py37h1800f87-cp37-cp37m-win_amd64.whl
Processing c:\miniconda3\wheels\gobject_introspection-1.58.2-1002_py37h1800f87-cp37-cp37m-win_amd64.whl
Requirement already satisfied: vc<15.0a0,>=14 in c:\python3\lib\site-packages (from gobject-introspection==1.58.2) (14.1)
Requirement already satisfied: libffi<3.3.0a0,>=3.2.1 in c:\python3\lib\site-packages (from gobject-introspection==1.58.2) (3.2.1)
Requirement already satisfied: cairo<1.17.0a0,>=1.16.0 in c:\python3\lib\site-packages (from gobject-introspection==1.58.2) (1.16.0)
Requirement already satisfied: glib<3.0a0,>=2.58.3 in c:\python3\lib\site-packages (from gobject-introspection==1.58.2) (2.58.3)
Collecting python<3.8.0a0,>=3.7 (from gobject-introspection==1.58.2)
  ERROR: Could not find a version that satisfies the requirement python<3.8.0a0,>=3.7 (from gobject-introspection==1.58.2) (from versions: none)
ERROR: No matching distribution found for python<3.8.0a0,>=3.7 (from gobject-introspection==1.58.2)

C:\Miniconda3\wheels>python -m pip install pygobject-3.30.5-0_py37h5e4a255-cp37-cp37m-win_amd64.whl
Processing c:\miniconda3\wheels\pygobject-3.30.5-0_py37h5e4a255-cp37-cp37m-win_amd64.whl
Requirement already satisfied: libiconv in c:\python3\lib\site-packages (from pygobject==3.30.5) (1.15)
Requirement already satisfied: libffi<3.3.0a0,>=3.2.1 in c:\python3\lib\site-packages (from pygobject==3.30.5) (3.2.1)
Requirement already satisfied: gobject_introspection==1.* in c:\python3\lib\site-packages (from pygobject==3.30.5) (1.58.2)
Collecting pycairo (from pygobject==3.30.5)
  Using cached https://files.pythonhosted.org/packages/48/20/5e83af98eb897935bf7dc39455e892ba866feebb9b7c3b392982866f9958/pycairo-1.18.1.tar.gz
Requirement already satisfied: glib<3.0a0,>=2.58.3 in c:\python3\lib\site-packages (from pygobject==3.30.5) (2.58.3)
Requirement already satisfied: vc<15.0a0,>=14 in c:\python3\lib\site-packages (from pygobject==3.30.5) (14.1)
Collecting python<3.8.0a0,>=3.7 (from pygobject==3.30.5)
  ERROR: Could not find a version that satisfies the requirement python<3.8.0a0,>=3.7 (from pygobject==3.30.5) (from versions: none)
ERROR: No matching distribution found for python<3.8.0a0,>=3.7 (from pygobject==3.30.5)

Just in case, I tried making the wheels with --skip-python and it did not help. I finally out of last resort, believing that all the previous dependencies were actually met and that the python<3.8.0a0,>=3.7 problem was perhaps just a bug, installed the final two packages with python -m pip install --no-deps

I then to test the install opened a python prompt and got a DLL load failed.

C:\Miniconda3\wheels>python
Python 3.7.2 (tags/v3.7.2:9a3ffc0492, Dec 23 2018, 23:09:28) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import gi
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python3\lib\site-packages\gi\__init__.py", line 42, in <module>
    from . import _gi
ImportError: DLL load failed: The specified module could not be found.

If the set of wheels I produced would be useful for diagnostics, just provide a place to send them and I will. It is about 50mb in total.