AttributeError: 'PackageDescriptor' object has no attribute 'realpath'

[DomenicP]

When trying to run colcon lcov-result on a fresh install, I'm receiving the following error:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/colcon_core/executor/__init__.py", line 91, in __call__
    rc = await self.task(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/colcon_core/task/__init__.py", line 92, in __call__
    return await task_method(*args, **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/colcon_lcov_result/task/lcov.py", line 63, in lcov_capture
    '--base-directory', str(pkg.realpath),
AttributeError: 'PackageDescriptor' object has no attribute 'realpath'

After doing a little digging, it looks like changes in the most recent version of colcon-core (0.5.5) may have broken colcon-lcov-result. It looks like PackageDescriptor#realpath may have been removed in colcon/colcon-core#311? I'm going to try downgrading colcon-core to see if that temporarily solves the problem.

Environment:

$ uname -a
Linux 0792e66080d7 4.19.76-linuxkit #1 SMP Thu Oct 17 19:31:58 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

$ python3 --version
Python 3.6.9

$ env | grep ROS
ROS_VERSION=2
ROS_PYTHON_VERSION=3
ROS_DISTRO=dashing

$ pip3 freeze | grep colcon
colcon-argcomplete==0.3.3
colcon-bash==0.4.2
colcon-cd==0.1.1
colcon-cmake==0.2.19
colcon-common-extensions==0.2.1
colcon-core==0.5.5
colcon-defaults==0.2.4
colcon-devtools==0.2.2
colcon-lcov-result==0.3.0
colcon-library-path==0.2.1
colcon-metadata==0.2.4
colcon-mixin==0.1.6
colcon-notification==0.2.12
colcon-output==0.2.8
colcon-package-information==0.3.2
colcon-package-selection==0.2.5
colcon-parallel-executor==0.2.4
colcon-pkg-config==0.1.0
colcon-powershell==0.3.6
colcon-python-setup-py==0.2.5
colcon-recursive-crawl==0.2.1
colcon-ros==0.3.17
colcon-test-result==0.3.8
colcon-zsh==0.4.0

[DomenicP]

I was able to fix this in https://github.com/DomenicP/colcon-lcov-result/commit/08d6f501a2738dbe85ecea569d63d81ebcdeefa9. If this solution is correct, then I'd be glad to open up a pull request.

[jpsamper2009]

@DomenicP That would be great! Thanks!

…

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On Mar 27, 2020, at 1:02 PM, Domenic Rodriguez ***@***.***> wrote:  I was able to fix this in ***@***.*** If this solution is correct, then I'd be glad to open up a pull request. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.