Trouble getting tests running

Hello,

I can't seem to manage to get extractcode and [typecode](https://github.com/nexB/typecode) to run the tests.

The whole issue is that part of the README.rst:

> To install this package with its full capability (where the binaries for
> 7zip and libarchive are installed), use the `full` extra option::
>
> pip install extractcode[full]
>
> If you want to use the version of binaries (possibly) provided by your operating
> system, use the `minimal` option::
>
> pip install extractcode
>
> In this case, you will need to provide a working and compatible libarchive and
> 7zip installed and configured in one of these ways such that ExtractCode can
> find them:
>
> - **a typecode-libarchive and typecode-7z plugin**: See the standard ones at
> https://github.com/nexB/scancode-plugins/tree/main/builtins
> These can either bundle a libarchive library, a 7z executable or expose a
> system-installed libraries.
> It does so by providing plugin entry points as ``scancode_location_provider``
> for ``extractcode_libarchive`` that should point to a ``LocationProviderPlugin``
> subclass with a ``get_locations()`` method that must return a mapping with
> this key:
>
> - 'extractcode.libarchive.dll': the absolute path to a **libarchive** shared object/DLL
>
> See for example:
>
> - https://github.com/nexB/scancode-plugins/blob/4da5fe8a5ab1c87b9b4af9e54d7ad60e289747f5/builtins/extractcode_libarchive-linux/setup.py#L40
> - https://github.com/nexB/scancode-plugins/blob/4da5fe8a5ab1c87b9b4af9e54d7ad60e289747f5/builtins/extractcode_libarchive-linux/src/extractcode_libarchive/__init__.py#L17
>
> And in the same way, the ``scancode_location_provider`` for ``extractcode_7zip``
> should point to a ``LocationProviderPlugin`` subclass with a ``get_locations()``
> method that must return a mapping with this key:
>
> - 'extractcode.sevenzip.exe': the absolute path to a **7zip** executable
>
> See for example:
>
> - https://github.com/nexB/scancode-plugins/blob/4da5fe8a5ab1c87b9b4af9e54d7ad60e289747f5/builtins/extractcode_7z-linux/setup.py#L40
> - https://github.com/nexB/scancode-plugins/blob/4da5fe8a5ab1c87b9b4af9e54d7ad60e289747f5/builtins/extractcode_7z-linux/src/extractcode_7z/__init__.py#L18
>
> - use **environment variables** to point to installed binaries:
>
> - EXTRACTCODE_LIBARCHIVE_PATH: the absolute path to a libarchive DLL
> - EXTRACTCODE_7Z_PATH: the absolute path to a 7zip executable
>
>
> - **a system-installed libarchive and 7zip executable** available in the system **PATH**.

So I am on a distro with libarchive-3.7.1 and p7zip-16.02 installed. Obviously I don't want to bundle with the full option.

I set up:

```rpm
export EXTRACTCODE_7Z_PATH=%{_bindir}
export EXTRACTCODE_LIBARCHIVE_PATH_ENVVAR=%{_libdir}
%pytest
```

It seems that libarchive is detected:

```bash
=============================== warnings summary ===============================
../../../../usr/lib/python3.12/site-packages/typecode/magic2.py:195
/usr/lib/python3.12/site-packages/typecode/magic2.py:195: UserWarning: System libmagic found in typical location is used. Install instead a typecode-libmagic plugin for best support.
warnings.warn(

src/extractcode/libarchive2.py:107: 12 warnings
/builddir/build/BUILD/extractcode-31.0.0/src/extractcode/libarchive2.py:107: UserWarning: Using "libarchive" library found in a system location. Install instead a extractcode-libarchive plugin for best support.
warnings.warn(
```

(same with libmagic)

However nothing works:

```bash
==================================== ERRORS ====================================
_________________ ERROR collecting src/extractcode/archive.py __________________
src/extractcode/archive.py:29: in
from extractcode import libarchive2
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
_________________ ERROR collecting src/extractcode/archive.py __________________
src/extractcode/archive.py:29: in
from extractcode import libarchive2
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
_________________ ERROR collecting src/extractcode/extract.py __________________
src/extractcode/extract.py:23: in
import extractcode.archive
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/archive.py:29: in
from extractcode import libarchive2
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
_________________ ERROR collecting src/extractcode/extract.py __________________
src/extractcode/extract.py:23: in
import extractcode.archive
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/archive.py:29: in
from extractcode import libarchive2
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
_______________ ERROR collecting src/extractcode/libarchive2.py ________________
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
_______________ ERROR collecting src/extractcode/libarchive2.py ________________
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
____________________ ERROR collecting tests/test_archive.py ____________________
tests/test_archive.py:29: in
from extractcode import archive
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/archive.py:29: in
from extractcode import libarchive2
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
____________________ ERROR collecting tests/test_archive.py ____________________
tests/test_archive.py:29: in
from extractcode import archive
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/archive.py:29: in
from extractcode import libarchive2
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
____________________ ERROR collecting tests/test_extract.py ____________________
tests/test_extract.py:23: in
from extractcode import extract
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/extract.py:23: in
import extractcode.archive
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/archive.py:29: in
from extractcode import libarchive2
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
____________________ ERROR collecting tests/test_extract.py ____________________
tests/test_extract.py:23: in
from extractcode import extract
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/extract.py:23: in
import extractcode.archive
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/archive.py:29: in
from extractcode import libarchive2
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
________________ ERROR collecting tests/test_extractcode_api.py ________________
tests/test_extractcode_api.py:16: in
from extractcode import extract
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/extract.py:23: in
import extractcode.archive
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/archive.py:29: in
from extractcode import libarchive2
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
________________ ERROR collecting tests/test_extractcode_api.py ________________
tests/test_extractcode_api.py:16: in
from extractcode import extract
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/extract.py:23: in
import extractcode.archive
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/archive.py:29: in
from extractcode import libarchive2
:1266: in _find_and_load
???
:1237: in _find_and_load_unlocked
???
:841: in _load_unlocked
???
/usr/lib/python3.12/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
src/extractcode/libarchive2.py:635: in
archive_reader = libarchive.archive_read_new
/usr/lib64/python3.12/ctypes/__init__.py:392: in __getattr__
func = self.__getitem__(name)
/usr/lib64/python3.12/ctypes/__init__.py:397: in __getitem__
func = self._FuncPtr((name_or_ordinal, self))
E AttributeError: /usr/bin/python3: undefined symbol: archive_read_new
```

archive_read_new is not found so it doesn't find libarchive I believe.

So I may not have understood the README.rst correctly. Are all the part s following "In this case, you will need to provide a working and compatible libarchive and 7zip installed and configured in one of these ways such that ExtractCode can find them:" mandatory or do I have to choose among the options?

Are the plugins mandatory?

Then If I distribute extractool, does the user have to set up EXTRACTCODE_7Z_PATH and EXTRACTCODE_7Z_PATH each time? Is there a way to avoir that without bundling?