Switch package to use fsspec for backends

.coveragerc.Linux

@@ -1,4 +1,4 @@
 [report]
-exclude_lines =
+exclude_also =
     pragma: no cover
     pragma: no Linux cover

.coveragerc.Windows

@@ -1,4 +1,4 @@
 [report]
-exclude_lines =
+exclude_also =
     pragma: no cover
     pragma: no Windows cover

.coveragerc.macOS

@@ -1,4 +1,4 @@
 [report]
-exclude_lines =
+exclude_also =
     pragma: no cover
     pragma: no macOS cover

.github/workflows/test.yml

@@ -21,6 +21,9 @@ jobs:
             python-version: '3.9'
           - os: ubuntu-latest
             python-version: '3.11'
+          - os: ubuntu-latest
+            python-version: '3.11'
+            fs: minio
 
     steps:
     - uses: actions/checkout@v4
@@ -35,29 +38,34 @@ jobs:
         python -V
         python -m pip install --upgrade pip
 
-    - name: Install packages with file-system backend
+    - name: Install dependencies
       run: |
-        pip install -e .
+        pip install -r requirements.txt
         pip install -r tests/requirements.txt
 
-    - name: Test file-system only package
+    - name: Default file system
       run: |
-        python -m pytest --cov-fail-under=0 tests/test_backend_filesystem_only.py tests/test_backend_filesystem.py
+        echo "AUDBACKEND_TEST_FS=dir" >> $GITHUB_ENV
 
-    - name: Install package with all dependencies
+    - name: Use minio file system
       run: |
-        pip install -r requirements.txt
+        ping -c1 -W1 play.minio.io >/dev/null && FS="minio" || FS="none"
+        echo "AUDBACKEND_TEST_FS=${FS}" >> $GITHUB_ENV
+      if: matrix.fs == 'minio'
 
     - name: Test with pytest
       env:
         ARTIFACTORY_USERNAME: ${{ secrets.ARTIFACTORY_USERNAME }}
         ARTIFACTORY_API_KEY: ${{ secrets.ARTIFACTORY_API_KEY }}
       run: |
+        # export AUDBACKEND_TEST_FS=${{ env.AUDBACKEND_TEST_FS }}
+        echo $AUDBACKEND_TEST_FS
         python -m pytest --cov-config=.coveragerc.${{ runner.os }}
+      if: ${{ env.AUDBACKEND_TEST_FS != 'none' }}
 
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v4
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         file: ./coverage.xml
-      if: matrix.os == 'ubuntu-latest'
+      if: ${{ (matrix.os == 'ubuntu-latest') && (env.AUDBACKEND_TEST_FS != 'none') }}

audbackend/__init__.py

@@ -1,19 +1,8 @@
-from audbackend import backend
-from audbackend import interface
-from audbackend.core.api import access
-from audbackend.core.api import create
-from audbackend.core.api import delete
-from audbackend.core.api import register
-from audbackend.core.backend.base import Base as Backend  # legacy
-from audbackend.core.backend.filesystem import FileSystem  # legacy
+from audbackend.core.base import AbstractBackend
 from audbackend.core.errors import BackendError
-from audbackend.core.repository import Repository
-
-# Import optional backends (legacy)
-try:
-    from audbackend.core.backend.artifactory import Artifactory
-except ImportError:  # pragma: no cover
-    pass
+from audbackend.core.maven import Maven
+from audbackend.core.unversioned import Unversioned
+from audbackend.core.versioned import Versioned
 
 
 __all__ = []