Fix install (#14)

* Add the needed bits to fix the install from pip

* Remove pylistenbrainz refs

* Use importlib.metadata to get package __version__

Co-authored-by: Alastair Porter <[email protected]>

pylistenbrainz/__init__.py

@@ -14,7 +14,19 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-__version__ = '0.5.0'
+import sys
+
+if sys.version_info >= (3, 10):
+    from importlib.metadata import version, PackageNotFoundError
+else:
+    # importlib.metadata's API changed in 3.10, so use a backport for versions less than this.
+    from importlib_metadata import version, PackageNotFoundError
+
+try:
+    __version__ = version(__name__)
+except PackageNotFoundError:
+    # package is not installed?
+    __version__ = "unknown"
 
 from pylistenbrainz.client import ListenBrainz
 from pylistenbrainz.listen import Listen

requirements.txt

@@ -2,3 +2,4 @@ requests == 2.23.0
 pytest == 5.4.1
 pytest-cov == 2.8.1
 sphinx == 3.0.1
+importlib-metadata >= 3.10.0;python_version<"3.10"

setup.py

@@ -1,12 +1,10 @@
 import setuptools
-import pylistenbrainz
 
 with open("README.md", "r") as fh:
     long_description = fh.read()
 
 setuptools.setup(
     name="pylistenbrainz",
-    version=pylistenbrainz.__version__,
     author="Param Singh",
     author_email="[email protected]",
     description="A simple ListenBrainz client library for Python",
@@ -22,5 +20,8 @@
     python_requires='>=3.5',
     install_requires=[
         'requests >= 2.23.0',
+        'importlib-metadata>=3.10.0;python_version<"3.10"',
     ],
+    use_scm_version=True,
+    setup_requires=['setuptools_scm'],
 )