For some reason, when the Catkin plugin is installing a pip dependency that fails to build, the build log isn't shown. For example, RPi.GPIO requires python-dev to build, and when running pip by hand it errors out looking for Python.h, but the Catkin plugin just shows this: Installing pip dependencies... Failed building wheel for RPi.GPIO Command "/home/kyrofa/edukit_bot/parts/workspace/install/usr/bin/python2 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-XKP5TB/RPi.GPIO/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-Bc7SEG-record/install-record.txt --single-version-externally-managed --no-compile --user --prefix=" failed with error code 1 in /tmp/pip-build-XKP5TB/RPi.GPIO/ Traceback (most recent call last): File "/usr/bin/snapcraft", line 9, in <module> load_entry_point('snapcraft==2.35', 'console_scripts', 'snapcraft')() File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 542, in load_entry_point return get_distribution(dist).load_entry_point(group, name) File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2569, in load_entry_point return ep.load() File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2229, in load return self.resolve() File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2235, in resolve module = __import__(self.module_name, fromlist=['__name__'], level=0) File "/usr/lib/python3/dist-packages/snapcraft/cli/__main__.py", line 19, in <module> run(prog_name='snapcraft') File "/usr/lib/python3/dist-packages/click/core.py", line 716, in __call__ return self.main(*args, **kwargs) File "/usr/lib/python3/dist-packages/click/core.py", line 696, in main rv = self.invoke(ctx) File "/usr/lib/python3/dist-packages/click/core.py", line 1037, in invoke return Command.invoke(self, ctx) File "/usr/lib/python3/dist-packages/click/core.py", line 889, in invoke return ctx.invoke(self.callback, **ctx.params) File "/usr/lib/python3/dist-packages/click/core.py", line 534, in invoke return callback(*args, **kwargs) File "/usr/lib/python3/dist-packages/click/decorators.py", line 17, in new_func return f(get_current_context(), *args, **kwargs) File "/usr/lib/python3/dist-packages/snapcraft/cli/__init__.py", line 124, in run ctx.forward(lifecyclecli.commands['snap']) File "/usr/lib/python3/dist-packages/click/core.py", line 552, in forward return self.invoke(cmd, **kwargs) File "/usr/lib/python3/dist-packages/click/core.py", line 534, in invoke return callback(*args, **kwargs) File "/usr/lib/python3/dist-packages/snapcraft/cli/lifecycle.py", line 140, in snap project_options, directory=directory, output=output) File "/usr/lib/python3/dist-packages/snapcraft/internal/lifecycle/_packer.py", line 45, in snap execute('prime', project_options) File "/usr/lib/python3/dist-packages/snapcraft/internal/lifecycle/_runner.py", line 80, in execute _Executor(config, project_options).run(step, part_names) File "/usr/lib/python3/dist-packages/snapcraft/internal/lifecycle/_runner.py", line 175, in run self._run_step(step, part, part_names) File "/usr/lib/python3/dist-packages/snapcraft/internal/lifecycle/_runner.py", line 212, in _run_step getattr(part, step)() File "/usr/lib/python3/dist-packages/snapcraft/internal/pluginhandler/__init__.py", line 252, in pull self.plugin.pull() File "/usr/lib/python3/dist-packages/snapcraft/plugins/catkin.py", line 421, in pull self._setup_dependencies(rosdep, catkin) File "/usr/lib/python3/dist-packages/snapcraft/plugins/catkin.py", line 445, in _setup_dependencies self._setup_pip_dependencies(system_dependencies.get('pip')) File "/usr/lib/python3/dist-packages/snapcraft/plugins/catkin.py", line 476, in _setup_pip_dependencies self._pip.install(pip_dependencies) File "/usr/lib/python3/dist-packages/snapcraft/plugins/_python/_pip.py", line 259, in install '--find-links', self._python_package_dir] + args, cwd=cwd) File "/usr/lib/python3/dist-packages/snapcraft/plugins/_python/_pip.py", line 386, in _run **kwargs) File "/usr/lib/python3/dist-packages/snapcraft/internal/common.py", line 74, in run_output output = subprocess.check_output(['/bin/sh', f.name] + cmd, **kwargs) File "/usr/lib/python3.5/subprocess.py", line 626, in check_output **kwargs).stdout File "/usr/lib/python3.5/subprocess.py", line 708, in run output=stdout, stderr=stderr) subprocess.CalledProcessError: Command '['/bin/sh', '/tmp/tmpesua4bvb', '/home/kyrofa/edukit_bot/parts/workspace/install/usr/bin/python2', '-m', 'pip', 'install', '--user', '--no-compile', '--no-index', '--find-links', '/home/kyrofa/edukit_bot/parts/workspace/python-packages', 'RPi.GPIO']' returned non-zero exit status 1 That experience needs to be improved.