Don't pass entrypoing name around anymore and allow passing fallback_root to get_version.

Author: ionelmc

src/setuptools_scm/__init__.py

@@ -31,7 +31,7 @@ def version_from_scm(root):
     config = Configuration()
     config.root = root
     # TODO: Is it API?
-    return _version_from_entrypoint(config, "setuptools_scm.parse_scm")
+    return _version_from_entrypoints(config)
 
 
 def _call_entrypoint_fn(root, config, fn):
@@ -47,11 +47,12 @@ def _call_entrypoint_fn(root, config, fn):
         return fn(root)
 
 
-def _version_from_entrypoint(config, entrypoint, fallback=False):
+def _version_from_entrypoints(config, fallback=False):
     if fallback:
-        entrypoint += "_fallback"
+        entrypoint = "setuptools_scm.parse_scm_fallback"
         root = config.fallback_root
     else:
+        entrypoint = "setuptools_scm.parse_scm"
         root = config.absolute_root
     for ep in iter_matching_entrypoints(root, entrypoint):
         version = _call_entrypoint_fn(root, config, ep.load())
@@ -91,16 +92,10 @@ def _do_parse(config):
             raise TypeError(
                 "version parse result was a string\nplease return a parsed version"
             )
-        version = parse_result or _version_from_entrypoint(
-            config, "setuptools_scm.parse_scm", fallback=True
-        )
+        version = parse_result or _version_from_entrypoints(config, fallback=True)
     else:
         # include fallbacks after dropping them from the main entrypoint
-        version = _version_from_entrypoint(
-            config, "setuptools_scm.parse_scm"
-        ) or _version_from_entrypoint(
-            config, "setuptools_scm.parse_scm", fallback=True
-        )
+        version = _version_from_entrypoints(config) or _version_from_entrypoints(config, fallback=True)
 
     if version:
         return version
@@ -126,6 +121,7 @@ def get_version(
     relative_to=None,
     tag_regex=None,
     fallback_version=None,
+    fallback_root=".",
     parse=None,
     git_describe_command=None,
 ):
@@ -138,6 +134,7 @@ def get_version(
 
     config = Configuration()
     config.root = root
+    config.fallback_root = fallback_root
     config.version_scheme = version_scheme
     config.local_scheme = local_scheme
     config.write_to = write_to

src/setuptools_scm/config.py

@@ -61,11 +61,19 @@ def __init__(self, relative_to=None, root="."):
         self.write_to = ""
         self.write_to_template = None
         self.fallback_version = None
-        self.fallback_root = _check_absolute_root(".", None)
+        self.fallback_root = "."
         self.parse = None
         self.tag_regex = DEFAULT_TAG_REGEX
         self.git_describe_command = None
 
+    @property
+    def fallback_root(self):
+        return self._fallback_root
+
+    @fallback_root.setter
+    def fallback_root(self, value):
+        self._fallback_root = os.path.abspath(value)
+
     @property
     def absolute_root(self):
         return self._absolute_root

testing/conftest.py

@@ -63,7 +63,7 @@ def get_version(self, **kw):
         __tracebackhide__ = True
         from setuptools_scm import get_version
 
-        version = get_version(root=str(self.cwd), **kw)
+        version = get_version(root=str(self.cwd), fallback_root=str(self.cwd), **kw)
         print(version)
         return version
 

testing/test_basic_api.py

@@ -23,8 +23,9 @@ def test_data_from_mime(tmpdir):
     assert res == {"name": "test", "revision": "1"}
 
 
-def test_version_from_pkginfo(wd):
+def test_version_from_pkginfo(wd, monkeypatch):
     wd.write("PKG-INFO", "Version: 0.1")
+
     assert wd.version == "0.1"
 
     # replicate issue 167

testing/test_regressions.py

@@ -43,10 +43,10 @@ def test_pip_egg_info(tmpdir, monkeypatch):
     )
 
     with pytest.raises(LookupError):
-        get_version(root=p.strpath)
+        get_version(root=p.strpath, fallback_root=p.strpath)
 
     p.ensure("pip-egg-info/random.egg-info/PKG-INFO").write("Version: 1.0")
-    assert get_version(root=p.strpath) == "1.0"
+    assert get_version(root=p.strpath, fallback_root=p.strpath) == "1.0"
 
 
 @pytest.mark.issue(164)