Error in building MATLAB wrapper: TypeError: unhashable type: 'Typename'

[xiaocaiyaa]

I am trying to build the MATLAB wrapper. Getting the following error

...
[ 94%] Built target SmartProjectionFactorExample
[ 94%] Built target FixedLagSmootherExample
[ 97%] Built target SmartRangeExample_plaza1
[ 97%] Generating ../wrap/gtsam/gtsam_wrapper.cpp
[MatlabWrapper] Ignoring classes: ['gtsam::Point2', 'gtsam::Point3', 'gtsam::CustomFactor']
Traceback (most recent call last):
File "/home/air/gtsam-develop/wrap/scripts/matlab_wrap.py", line 58, in
cc_content = wrapper.wrap(sources, path=args.out)
File "/home/air/gtsam-develop/wrap/gtwrap/matlab_wrapper/wrapper.py", line 1639, in wrap
self.wrap_namespace(module)
File "/home/air/gtsam-develop/wrap/gtwrap/matlab_wrapper/wrapper.py", line 1034, in wrap_namespace
self.wrap_namespace(element)
File "/home/air/gtsam-develop/wrap/gtwrap/matlab_wrapper/wrapper.py", line 1040, in wrap_namespace
class_text = self.wrap_instantiated_class(
File "/home/air/gtsam-develop/wrap/gtwrap/matlab_wrapper/wrapper.py", line 964, in wrap_instantiated_class
self.wrap_class_constructors(
File "/home/air/gtsam-develop/wrap/gtwrap/matlab_wrapper/wrapper.py", line 660, in wrap_class_constructors
varargin=self._wrap_variable_arguments(
File "/home/air/gtsam-develop/wrap/gtwrap/matlab_wrapper/wrapper.py", line 237, in _wrap_variable_arguments
check_type = self._format_type_name(
File "/home/air/gtsam-develop/wrap/gtwrap/matlab_wrapper/mixins.py", line 134, in _format_type_name
self._format_type_name(type_name.instantiations[idx],
File "/home/air/gtsam-develop/wrap/gtwrap/matlab_wrapper/mixins.py", line 112, in _format_type_name
formatted_type_name += self.data_type.get(name) or name
TypeError: unhashable type: 'Typename'
make[2]: *** [matlab/CMakeFiles/gtsam_matlab_wrapper.dir/build.make:76：wrap/gtsam/gtsam_wrapper.cpp] error 1
make[1]: *** [CMakeFiles/Makefile2:32161：matlab/CMakeFiles/gtsam_matlab_wrapper.dir/all] error 2
make: *** [Makefile:163：all] error 2

Could you help me to find what's wrong with it?
Python 3.8.10
Ubuntu 20.04.1 LTS
GTSAM 4.1.1

[richardXia7462]

I also meet this problem

[water137780117]

The same issue.
Python 3.10.4
macOS 12.3.1 (M1)
GTSAM 4.2a6

[carlatcrown]

Same issue
Ubuntu Focal 20.04
MatLab 2020b

Works with 4.2a5, fails with 4.2a6.

cmake: CMAKE_ARGS=-DGTSAM_USE_SYSTEM_EIGEN:BOOLEAN=FALSE -DGTSAM_WITH_EIGEN_MKL:BOOLEAN=FALSE -DGTSAM_WITH_TBB:BOOLEAN=FALSE -DGTSAM_BUILD_EXAMPLES_ALWAYS:BOOL=FALSE -DGTSAM_BUILD_UNSTABLE:OPTION=OFF -DCMAKE_BUILD_TYPE:STRING=Release -DGTSAM_BUILD_WITH_MARCH_NATIVE:BOOL=OFF -DGTSAM_INSTALL_MATLAB_TOOLBOX:BOOLEAN=true -DMEX_COMMAND:STRING=/usr/local/MATLAB/R2020b/bin/mex
CXX_FLAGS=-DEIGEN_DONT_VECTORIZE -DEIGEN_DISABLE_UNALIGNED_ARRAY_ASSERT -march=skylake

[varunagrawal]

Sorry for the late response. I was able to reproduce and fix the issue. Once #1205 gets merged, you can just get the latest develop and everything should work.

If you still face any problems, please feel free to open a new issue.

[carlatcrown]

Thanks for the fix - confirmed working.