Refactor api and metadata storage

lib.nix

@@ -127,7 +127,8 @@ in
 
   devShells = {
     default = mkShellNoCC {
-      BACKY_CMD = "${poetryEnv}/bin/backy";
+      BACKY_CLI_CMD = "${poetryEnv}/bin/backy";
+      BACKY_RBD_CMD = "${poetryEnv}/bin/backy-rbd";
       packages = [
         poetryEnv
         poetry

pyproject.toml

@@ -75,5 +75,24 @@ zest-releaser = "^9.1.1"
 requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
 
+[tool.poetry.plugins.'backy.sources']
+file = 'backy.file:FileSource'
+rbd = 'backy.rbd:RBDSource'
+s3 = 'backy.s3:S3Source'
+
 [tool.poetry.scripts]
-backy = "backy.main:main"
+backy = "backy.cli:main"
+backyd = "backy.daemon:main"
+backy-rbd = "backy.rbd:main"
+backy-s3 = "backy.s3:main"
+backy-file = "backy.file:main"
+
+[[tool.mypy.overrides]]
+module = "backy.*"
+check_untyped_defs = true
+
+[tool.zest-releaser]
+prereleaser.before = [ "release_helper.ignore_history_file" ]
+prereleaser.middle = [ "release_helper.update_poetry_version release_helper.scriv_collect" ]
+postreleaser.before = [ "release_helper.ignore_history_file" ]
+postreleaser.middle = [ "release_helper.update_poetry_version" ]