Fix handling of dependencies with a not in marker operator

CHANGELOG.md

@@ -9,6 +9,7 @@
 ### Fixed
 
 - Fixed installation of directory dependencies.
+- Fixed handling of dependencies with a `not in` marker operator.
 
 
 ## [0.12.5] - 2018-10-26

poetry/packages/__init__.py

@@ -105,20 +105,21 @@ def dependency_from_pep_508(name):
                     op = ""
                 elif op == "!=":
                     version += ".*"
-                elif op == "in":
+                elif op in ("in", "not in"):
                     versions = []
                     for v in re.split("[ ,]+", version):
                         split = v.split(".")
                         if len(split) in [1, 2]:
                             split.append("*")
-                            op = ""
+                            op_ = "" if op == "in" else "!="
                         else:
-                            op = "=="
+                            op_ = "==" if op == "in" else "!="
 
-                        versions.append(op + ".".join(split))
+                        versions.append(op_ + ".".join(split))
 
+                    glue = " || " if op == "in" else ", "
                     if versions:
-                        ands.append(" || ".join(versions))
+                        ands.append(glue.join(versions))
 
                     continue
 

tests/packages/test_main.py

@@ -152,3 +152,20 @@ def test_dependency_from_pep_508_with_python_version_union_of_multi():
         'python_version >= "2.7" and python_version < "2.8" '
         'or python_version >= "3.4" and python_version < "3.5"'
     )
+
+
+def test_dependency_from_pep_508_with_not_in_op_marker():
+    name = (
+        "jinja2 (>=2.7,<2.8)"
+        '; python_version not in "3.0,3.1,3.2" and extra == "export"'
+    )
+
+    dep = dependency_from_pep_508(name)
+
+    assert dep.name == "jinja2"
+    assert str(dep.constraint) == ">=2.7,<2.8"
+    assert dep.in_extras == ["export"]
+    assert dep.python_versions == "!=3.0.*, !=3.1.*, !=3.2.*"
+    assert (
+        str(dep.marker) == 'python_version not in "3.0,3.1,3.2" and extra == "export"'
+    )