Load package version from Git tags

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "mpd-now-playable"
-version = "0.0.1"
+dynamic = ["version"]
 description = "Expose your MPD server as a 'now playable' app on MacOS"
 authors = [
     {name = "Danielle McLean", email = "dani@00dani.me"},
@@ -24,6 +24,16 @@ lint = 'ruff check src/mpd_now_playable'
 typecheck = 'mypy -p mpd_now_playable'
 check = {composite = ['lint', 'typecheck']}
 
+[tool.pdm.version]
+source = "scm"
+
+[build-system]
+requires = ["pdm-backend"]
+build-backend = "pdm.backend"
+
+[tool.pdm.build]
+excludes = ["**/.mypy_cache"]
+
 [tool.pdm.dev-dependencies]
 dev = [
     "mypy>=1.7.1",