On Sep 28, 2019, at 3:20 AM, Timo via gtk-osx-users-list <gtk-osx-users-list gnome org> wrote:
Hello, I followed the build instructions on the wiki and everything's built correctly. However my application
fails to run with a warning about libpango-1.0.0.dylib not being found and then a traceback. I can narrow it
down to just doing a `from gi.repository import Gtk`.
bash-3.2$ python3
Python 3.6.8 (default, Sep 24 2019, 17:23:22)
[GCC 4.2.1 Compatible Apple LLVM 9.1.0 (clang-902.0.39.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from gi.repository import Gtk
** (process:45468): WARNING **: 20:30:34.767: Failed to load shared library 'libpango-1.0.0.dylib'
referenced by the typelib: dlopen(libpango-1.0.0.dylib, 9): image not found
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
File "<frozen importlib._bootstrap>", line 626, in _load_backward_compatible
File "/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/importer.py", line 145, in load_module
importlib.import_module('gi.repository.' + dep.split("-")[0])
File "/Users/gtk3/gtk/inst/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
File "<frozen importlib._bootstrap>", line 626, in _load_backward_compatible
File "/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/importer.py", line 145, in load_module
importlib.import_module('gi.repository.' + dep.split("-")[0])
File "/Users/gtk3/gtk/inst/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 656, in _load_unlocked
File "<frozen importlib._bootstrap>", line 626, in _load_backward_compatible
File "/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/importer.py", line 146, in load_module
dynamic_module = load_overrides(introspection_module)
File "/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/overrides/__init__.py", line 118, in
load_overrides
override_mod = importlib.import_module(override_package_name)
File "/Users/gtk3/gtk/inst/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/overrides/Pango.py", line 41, in <module>
FontDescription = override(FontDescription)
File "/Users/gtk3/gtk/inst/lib/python3.6/site-packages/gi/overrides/__init__.py", line 195, in override
assert g_type != TYPE_NONE
AssertionError
Explicitly setting DYLD_FALLBACK_LIBRARY_PATH seems to fix the problem:
bash-3.2$ export DYLD_FALLBACK_LIBRARY_PATH=/Users/gtk3/gtk/inst/lib
bash-3.2$ python3
Python 3.6.8 (default, Sep 24 2019, 17:23:22)
[GCC 4.2.1 Compatible Apple LLVM 9.1.0 (clang-902.0.39.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from gi.repository import Gtk
(.:45493): Gtk-WARNING **: 20:33:47.938: Locale not supported by C library.
Using the fallback 'C' locale.
__main__:1: PyGIWarning: Gtk was imported without specifying a version first. Use
gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
However the same problem happens when I bundle the application. Again, only doing the GTK import in the
myapp_launcher.py file gives the same error (launcher file taken from gtk-mac-bundler example and Gramps for
the updated version).
It already has `environ['DYLD_LIBRARY_PATH'] = bundle_lib`, but even adding
`environ['DYLD_FALLBACK_LIBRARY_PATH'] = bundle_lib` makes no differences. Printing `bundle_lib` points to
the lib dir inside the bundle and printing `os.path.exists(bundle_lib, 'libpango-1.0.0.dylib')` shows the
file is actually there. So it's not picking up the Python set env variable.
It's only after I do `export DYLD_FALLBACK_LIBRARY_PATH=/path/to/myapp_bundle.app/Contents/Resources/lib`
that the bundled app will run, but is of course only feasible to do on my dev machine.
Is it my environment that's tainted somehow? Did the build not correctly pick up paths?
