Hello, I am having issues installing the nmeanavsatdriver (http://wiki.ros.org/nmea_navsat_driver). I am on ubuntu 20.04, ROS Noetic. Here are the steps I followed when I tried to install it. cd ~/catkin-ws/src git clone https://github.com/ros-drivers/nmea_navsat_driver.git cd .. source devel/setup.bash catkin_make

here I get the following error : Could NOT find catkinvirtualenv (missing: catkinvirtualenvDIR) -- Could not find the required component 'catkinvirtualenv'. The following CMake error indicates that you either need to install the package with the same name or change your environment so that it can be found. CMake Error at /opt/ros/noetic/share/catkin/cmake/catkinConfig.cmake:83 (findpackage): Could not find a package configuration file provided by "catkinvirtualenv" With any of the following names: catkinvirtualenvConfig.cmake catkinvirtualenv-config.cmake Add the installation prefix of "catkinvirtualenv" to CMAKEPREFIXPATH or set "catkinvirtualenvDIR" to a directory containing one of the above files. If "catkinvirtualenv" provides a separate development package or SDK, be sure it has been installed.

So I believe I have to install catkinvirtualenv so I did: git clone https://github.com/locusrobotics/catkinvirtualenv

And now after running catkin_make, I get a different error, the error message is very long but here is the first part:

Traceback (most recent call last): File "/home/user/catkinws/devel/lib/catkinvirtualenv/venvinit", line 15, in exec(compile(fh.read(), pythonscript, 'exec'), context) File "/home/name/catkinws/src/catkinvirtualenv/catkinvirtualenv/scripts/venvinit", line 46, in venv.initialize( File "/home/user/catkinws/src/catkinvirtualenv/catkinvirtualenv/src/catkinvirtualenv/venv.py", line 65, in initialize raise RuntimeError(error_msg) RuntimeError: Unable to find a system-installed python2. make[2]: ** [catkinvirtualenv/testcatkinvirtualenvpython2/CMakeFiles/testcatkinvirtualenvpython2generatevirtualenv.dir/build.make:79: venv/bin/python] Error 1 make[1]: *** [CMakeFiles/Makefile2:2744: catkinvirtualenv/testcatkinvirtualenvpython2/CMakeFiles/testcatkinvirtualenvpython2generatevirtualenv.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... Traceback (most recent call last): File "/home/name/catkinws/devel/lib/catkinvirtualenv/venvinit", line 15, in exec(compile(fh.read(), pythonscript, 'exec'), context) File "/home/name/catkinws/src/catkinvirtualenv/catkinvirtualenv/scripts/venvinit", line 46, in venv.initialize( File "/home/user/catkinws/src/catkinvirtualenv/catkinvirtualenv/src/catkinvirtualenv/venv.py", line 93, in initialize versionproc = runcommand( File "", line 37, in runcommand File "/usr/lib/python3.8/subprocess.py", line 493, in run with Popen(popenargs, *kwargs) as process: File "/usr/lib/python3.8/subprocess.py", line 858, in _init__ self.executechild(args, executable, preexecfn, closefds, File "/usr/lib/python3.8/subprocess.py", line 1704, in executechild raise childexceptiontype(errnonum, errmsg, err_filename) FileNotFoundError: [Errno 2] No such file or directory: 'python'*

It looks like the error comes from the fact that python is required and not python3, but I am not sure. I hope someone can help me. Thank you very much and let me know if you need more info on the error.