pio core crash in project/config.py: TypeError: sequence item 1: expected str instance, list found

[julianneswinoga]

What kind of issue is this?

• PlatformIO Core.
  If you’ve found a bug, please provide an information below.

---

Configuration

Operating system:

$ cat /etc/*release
Manjaro Linux
DISTRIB_ID=ManjaroLinux
DISTRIB_RELEASE=21.1.5
DISTRIB_CODENAME=Pahvo
DISTRIB_DESCRIPTION="Manjaro Linux"
Manjaro Linux
NAME="Manjaro Linux"
ID=manjaro
ID_LIKE=arch
BUILD_ID=rolling
PRETTY_NAME="Manjaro Linux"
ANSI_COLOR="32;1;24;144;200"
HOME_URL="https://manjaro.org/"
DOCUMENTATION_URL="https://wiki.manjaro.org/"
SUPPORT_URL="https://manjaro.org/"
BUG_REPORT_URL="https://bugs.manjaro.org/"
LOGO=manjarolinux

PlatformIO Version (platformio --version):

$ platformio --version
legacy Click
PlatformIO Core, version 5.2.1

Description of problem

Hard crash when trying to build an environment.

Steps to Reproduce

1. Clone https://github.com/cameronswinoga/OpenAstroTracker-Firmware
2. Checkout commit cb2407e5c5f (git checkout cb2407e5c5f)
3. Run pio run -e mksgenlv21
4. See build system crash

Actual Results

$ pio run -e mksgenlv21
legacy Click
Can not remove temporary directory `/home/cameron/projects/OpenAstroTracker-Firmware/.pio/build`. Please remove it manually to avoid build issues
Error: Traceback (most recent call last):
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/platformio/__main__.py", line 130, in main
    cli()  # pylint: disable=no-value-for-parameter
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/platformio/commands/__init__.py", line 44, in invoke
    return super(PlatformioCLI, self).invoke(ctx)
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/platformio/commands/run/command.py", line 134, in cli
    process_env(
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/platformio/commands/run/command.py", line 171, in process_env
    print_processing_header(name, config, verbose)
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/platformio/commands/run/command.py", line 197, in print_processing_header
    for k, v in config.items(env=env):
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/platformio/project/config.py", line 228, in items
    return [(option, self.get(section, option)) for option in self.options(section)]
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/platformio/project/config.py", line 228, in <listcomp>
    return [(option, self.get(section, option)) for option in self.options(section)]
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/platformio/project/config.py", line 303, in get
    value = self.getraw(section, option, default)
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/platformio/project/config.py", line 283, in getraw
    return self._expand_interpolations(value)
  File "/home/cameron/.platformio/penv/lib/python3.9/site-packages/platformio/project/config.py", line 292, in _expand_interpolations
    return self.VARTPL_RE.sub(self._re_interpolation_handler, value)
TypeError: sequence item 1: expected str instance, list found

============================================================

An unexpected error occurred. Further steps:

* Verify that you have the latest version of PlatformIO using
  `pip install -U platformio` command

* Try to find answer in FAQ Troubleshooting section
  https://docs.platformio.org/page/faq.html

* Report this problem to the developers
  https://github.com/platformio/platformio-core/issues

============================================================

Expected Results

For platformio to try and build the project 😄

Additional info

Note that this only crashes with the latest commit on that branch (feature/cs/add-initial-unit-test). I.e. the crash happens with cb2407e5c5f but not with 0cd08812592.

[ivankravets]

Thanks for the report! Please re-test with pio upgrade --dev.

[julianneswinoga]

Yep all fixed! Thanks 😄