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?
