fix (vcs_dependency): create valid PEP508 string for git dependencies with ssh (#1799)

poetry/packages/vcs_dependency.py

+from poetry.vcs import git
+
 from .dependency import Dependency
 
 
@@ -73,11 +75,17 @@ class VCSDependency(Dependency):
     @property
     def base_pep_508_name(self):  # type: () -> str
         requirement = self.pretty_name
+        parsed_url = git.ParsedUrl.parse(self._source)
 
         if self.extras:
             requirement += "[{}]".format(",".join(self.extras))
 
+        if parsed_url.protocol is not None:
             requirement += " @ {}+{}@{}".format(self._vcs, self._source, self.reference)
+        else:
+            requirement += " @ {}+ssh://{}@{}".format(
+                self._vcs, parsed_url.format(), self.reference
+            )
 
         return requirement
 

poetry/vcs/git.py

@@ -86,7 +86,7 @@ class ParsedUrl:
             "{}@".format(self.user) if self.user else "",
             self.resource,
             ":{}".format(self.port) if self.port else "",
-            "/" + self.pathname if self.pathname.startswith(":") else self.pathname,
+            "/" + self.pathname.lstrip(":/"),
         )
 
     def format(self):

tests/packages/test_vcs_dependency.py

@@ -13,6 +13,14 @@ def test_to_pep_508():
     assert expected == dependency.to_pep_508()
 
 
+def test_to_pep_508_ssh():
+    dependency = VCSDependency("poetry", "git", "git@github.com:sdispater/poetry.git")
+
+    expected = "poetry @ git+ssh://git@github.com/sdispater/poetry.git@master"
+
+    assert expected == dependency.to_pep_508()
+
+
 def test_to_pep_508_with_extras():
     dependency = VCSDependency(
         "poetry", "git", "https://github.com/python-poetry/poetry.git"