Failed in Ubuntu 20.04

[arko-create]

[build] Found 3 packages in 0.0 seconds.
Traceback (most recent call last): File "/usr/local/bin/catkin", line 8, in sys.exit(main()) File "/usr/local/lib/python3.8/dist-packages/catkin_tools/commands/catkin.py", line 265, in main catkin_main(sysargs) File "/usr/local/lib/python3.8/dist-packages/catkin_tools/commands/catkin.py", line 260, in catkin_main sys.exit(args.main(args) or 0) File "/usr/local/lib/python3.8/dist-packages/catkin_tools/verbs/catkin_build/cli.py", line 379, in main return build_isolated_workspace( File "/usr/local/lib/python3.8/dist-packages/catkin_tools/verbs/catkin_build/build.py", line 329, in build_isolated_workspace packages_to_be_built, packages_to_be_built_deps, all_packages = determine_packages_to_be_built( File "/usr/local/lib/python3.8/dist-packages/catkin_tools/verbs/catkin_build/build.py", line 81, in determine_packages_to_be_built ordered_packages = topological_order_packages(workspace_packages) File "/usr/lib/python3/dist-packages/catkin_pkg/topological_order.py", line 191, in topological_order_packages pkg.evaluate_conditions(os.environ) File "/usr/lib/python3/dist-packages/catkin_pkg/package.py", line 212, in evaluate_conditions conditional.evaluate_condition(context) File "/usr/lib/python3/dist-packages/catkin_pkg/package.py", line 369, in evaluate_condition self.evaluated_condition = evaluate_condition(self.condition, context) File "/usr/lib/python3/dist-packages/catkin_pkg/condition.py", line 23, in evaluate_condition expr = _get_condition_expression() File "/usr/lib/python3/dist-packages/catkin_pkg/condition.py", line 44, in _get_condition_expression _condition_expression = pp.operatorPrecedence( AttributeError: module 'pyparsing' has no attribute 'operatorPrecedence' ❯ sudo apt install git libeigen3-dev libboost-all-dev qtbase5-dev libglew-dev catkin Reading package lists... Done Building dependency tree
Reading state information... Done catkin is already the newest version (0.8.0-1ubuntu2). libboost-all-dev is already the newest version (1.71.0.0ubuntu2). libeigen3-dev is already the newest version (3.3.7-2). libglew-dev is already the newest version (2.1.0-4). git is already the newest version (1:2.25.1-1ubuntu3.11). qtbase5-dev is already the newest version (5.12.8+dfsg-0ubuntu2.1). The following packages were automatically installed and are no longer required: bridge-utils python3-cached-property python3-docker python3-dockerpty python3-docopt python3-importlib-metadata python3-jsonschema python3-more-itertools python3-pyrsistent python3-texttable python3-websocket python3-zipp ubuntu-fan Use 'sudo apt autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 28 not upgraded.

[arko-create]

I have a Ubuntu 20.04 machine. I followed the steps mentioned in Build process but when I try to build the project it fails with the above message. Let me know if I am missing out on something.

[jbehley]

it seems like that catkin is the problem that uses something form a package that doesn't exist anymore (maybe got deprecated and now removed: see also https://github.com/pyparsing/pyparsing/issues/327)

A work around would be to install a prior version pyparsing, e.g., pip install pyparsing==2.4.7. This was installed on my system and with this catkin build seems to work (ed).

As mentioned in a different issues; we have a pure cmake-based build in the making, but have to invest some more time to make the glow part cmake-compatible. I cannot promise to provide

[jbehley]

We have now a cmake-only build that should resolve the problem. If you are still interested, you can give it now a try.

If you still have issues, please re-open the issue again.