Remove 'deps.on_sys_path', presumed unused. Ref #39.

CHANGES.rst

@@ -1,3 +1,10 @@
+6.0
+---
+
+#39: Removed ``pip_run.deps.on_sys_path``, originally intended
+for API-use for making packages available at run time in
+the same process.
+
 5.3
 ---
 

README.rst

@@ -36,7 +36,6 @@ With this single-line command::
 
 Features include
 
-- Allows declaration of dependencies at runtime.
 - Downloads missing dependencies and makes their packages available for import.
 - Installs packages to a special staging location such that they're not installed after the process exits.
 - Relies on pip to cache downloads of such packages for reuse.

pip_run/deps.py

@@ -18,24 +18,6 @@
 filterfalse = getattr(itertools, 'filterfalse', None) or itertools.ifilterfalse
 
 
-@contextlib.contextmanager
-def _update_working_set():
-    """
-    Update the master working_set to include these new packages.
-
-    TODO: would be better to use an officially-supported API,
-    but no suitable API is apparent.
-    """
-    try:
-        pkg_resources = sys.modules['pkg_resources']
-        pkg_resources._initialize_master_working_set()
-    except KeyError:
-        # it's unnecessary to re-initialize when it hasn't
-        # yet been initialized.
-        pass
-    yield
-
-
 def _installable(args):
     """
     Return True only if the args to pip install
@@ -119,21 +101,6 @@ def _save_file(filename):
             os.remove(filename)
 
 
-@contextlib.contextmanager
-def on_sys_path(*args):
-    """
-    Install dependencies via args to pip and ensure they have precedence
-    on sys.path.
-    """
-    with load(*args) as target:
-        sys.path.insert(0, target)
-        try:
-            with _update_working_set():
-                yield target
-        finally:
-            sys.path.remove(target)
-
-
 def pkg_installed(spec):
     try:
         pkg_resources.require(spec)

pip_run/tests/test_deps.py

@@ -1,19 +1,8 @@
 import copy
 
-import pkg_resources
-
 from pip_run import deps
 
 
-def test_entry_points():
-    """
-    Ensure entry points are visible after making packages visible
-    """
-    with deps.on_sys_path('jaraco.mongodb'):
-        eps = pkg_resources.iter_entry_points('pytest11')
-        assert list(eps), "Entry points not found"
-
-
 class TestInstallCheck:
     def test_installed(self):
         assert deps.pkg_installed('pip-run')