Fix an error when building distributions with exclude

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Fixed
 
 - Fixed executables from outside the virtualenv not being accessible.
+- Fixed a possible error when building distributions with the `exclude` option.
 
 
 ## [0.12.8] - 2018-11-13

poetry/masonry/builders/builder.py

@@ -53,7 +53,7 @@ class Builder(object):
 
         explicitely_excluded = set()
         for excluded_glob in self._package.exclude:
-            for excluded in self._path.glob(excluded_glob):
+            for excluded in self._path.glob(str(excluded_glob)):
                 explicitely_excluded.add(excluded.relative_to(self._path).as_posix())
 
         ignored = vcs_ignored_files | explicitely_excluded

tests/masonry/builders/test_builder.py

+from poetry.io import NullIO
+from poetry.masonry.builders.builder import Builder
+from poetry.poetry import Poetry
+from poetry.utils._compat import Path
+from poetry.utils.env import NullEnv
+
+
+def test_builder_find_excluded_files(mocker):
+    p = mocker.patch("poetry.vcs.git.Git.get_ignored_files")
+    p.return_value = []
+
+    builder = Builder(
+        Poetry.create(Path(__file__).parent / "fixtures" / "complete"),
+        NullEnv(),
+        NullIO(),
+    )
+
+    assert builder.find_excluded_files() == {"my_package/sub_pkg1/extra_file.xml"}

tests/masonry/builders/test_complete.py

@@ -163,6 +163,8 @@ def test_complete():
     zip = zipfile.ZipFile(str(whl))
 
     try:
+        assert "my_package/sub_pgk1/extra_file.xml" not in zip.namelist()
+
         entry_points = zip.read("my_package-1.2.3.dist-info/entry_points.txt")
 
         assert (