evaluate "path" dependencies as relative to the pyproject.toml, not to the CWD (#97)

* evaluate "path" dependencies as relative to the pyproject.toml, not to the CWD

* use the root dir for more things, not just path dependencies

get rid of cwd entirely from the Package class.

poetry/packages/package.py

@@ -109,7 +109,7 @@ class Package(object):
         self._platform = '*'
         self._platform = '*'
         self._platform_constraint = EmptyConstraint()
         self._platform_constraint = EmptyConstraint()
 
 
-        self.cwd = None
+        self.root_dir = None
 
 
     @property
     @property
     def name(self):
     def name(self):
@@ -281,13 +281,13 @@ class Package(object):
                 dependency = FileDependency(
                 dependency = FileDependency(
                     file_path,
                     file_path,
                     category=category,
                     category=category,
-                    base=self.cwd
+                    base=self.root_dir
                 )
                 )
             elif 'path' in constraint:
             elif 'path' in constraint:
                 path = Path(constraint['path'])
                 path = Path(constraint['path'])
 
 
-                if self.cwd:
-                    is_file = (self.cwd / path).is_file()
+                if self.root_dir:
+                    is_file = (self.root_dir / path).is_file()
                 else:
                 else:
                     is_file = path.is_file()
                     is_file = path.is_file()
 
 
@@ -296,14 +296,14 @@ class Package(object):
                         path,
                         path,
                         category=category,
                         category=category,
                         optional=optional,
                         optional=optional,
-                        base=self.cwd
+                        base=self.root_dir
                     )
                     )
                 else:
                 else:
                     dependency = DirectoryDependency(
                     dependency = DirectoryDependency(
                         path,
                         path,
                         category=category,
                         category=category,
                         optional=optional,
                         optional=optional,
-                        base=self.cwd,
+                        base=self.root_dir,
                         develop=constraint.get('develop', False)
                         develop=constraint.get('develop', False)
                     )
                     )
             else:
             else:

poetry/poetry.py

@@ -96,7 +96,7 @@ class Poetry:
         name = local_config['name']
         name = local_config['name']
         version = local_config['version']
         version = local_config['version']
         package = Package(name, version, version)
         package = Package(name, version, version)
-        package.cwd = Path(cwd)
+        package.root_dir = poetry_file.parent
 
 
         for author in local_config['authors']:
         for author in local_config['authors']:
             package.authors.append(author)
             package.authors.append(author)
@@ -109,7 +109,7 @@ class Poetry:
         package.classifiers = local_config.get('classifiers', [])
         package.classifiers = local_config.get('classifiers', [])
 
 
         if 'readme' in local_config:
         if 'readme' in local_config:
-            package.readme = Path(cwd) / local_config['readme']
+            package.readme = Path(poetry_file.parent) / local_config['readme']
 
 
         if 'platform' in local_config:
         if 'platform' in local_config:
             package.platform = local_config['platform']
             package.platform = local_config['platform']