part 2 of the tutorial, fixed some bugs

docs/tutorial.rst

@@ -43,4 +43,32 @@ This is all you need to run warmup. Let's run them now:
 
 And congrats, you've had your first Uranium run! Of course, all this
 did was run virtualend and install Uranium. Now let's get some real
-functionality done.
+functionality.
+
+------------------------------
+Developing and Installing Eggs
+------------------------------
+
+We started with a blank Uranium file. To add eggs and develop-eggs,
+you can add a couple new section to the uranium file:
+
+.. code-block:: yaml
+
+  # this is the uranium.yaml from the first part
+  develop-eggs:
+    - .
+  eggs:
+    nose: ==1.3.4
+
+And let's run uranium again. Now that you've 'warmed up', you don't have to run
+warmup again, instead, you can run:
+
+  $ ./bin/uranium
+
+You should see:
+
+    WARNING:  Unable to install develop egg at /tmp/uranium-tut: Directory '/tmp/uranium-tut' is not installable
+
+This is because we don't have any egg source in the current
+directory. If you did this in such a directory, you would notice the
+egg was installed for you.

notes.md

@@ -13,7 +13,11 @@ Uranium needs to work in a variety of situations, so testing is key. Ultimately
 
 # Known issues
 
-* fix recursive value referencing
+* uranium version conflicts.
+  * the uranium package currently lives in it's own sandbox, so
+    version conflicts between uranium's requirements and the users
+    will conflict.
+  * We should maybe sandbox Uranium's own depedencies
 
 
 # Potential Problems

setup.py

@@ -6,13 +6,13 @@
     from distutils.core import setup
 
 install_requires = [
-    'docopt>=0.6.2',
-    'jinja2',
-    'pip>=6',
-    'pyyaml',
-    'requests',
-    'six',
-    'virtualenv>=1.11.6',
+    'docopt==0.6.2',
+    'jinja2==2.7.3',
+    'pip==6.0.6',
+    'pyyaml==3.11',
+    'requests==2.5.1',
+    'six==1.9.0',
+    'virtualenv==12.0.5',
     'zc.buildout'
 ]
 
@@ -22,7 +22,7 @@
 ]
 
 setup(name='uranium',
-      version='0.0.24',
+      version='0.0.25',
       description='a build system for python',
       long_description='a build system for python',
       author='Yusuke Tsutsumi',

uranium/pip_manager/__init__.py

@@ -1,12 +1,15 @@
 import os
+import logging
 from pip.index import PackageFinder
 from pip.req import InstallRequirement
 from pip.locations import build_prefix, src_prefix
-from pip.exceptions import DistributionNotFound
+from pip.exceptions import DistributionNotFound, InstallationError
 from pip.download import PipSession
 from .req_set import UraniumRequirementSet
+from uranium.utils import log_exception
 
 DEFAULT_INDEX_URLS = ['https://pypi.python.org/simple/']
+LOGGER = logging.getLogger(__name__)
 
 
 class PipException(Exception):
@@ -43,11 +46,17 @@ def add_eggs(self, egg_name_list):
                 self._requirement_set.add_requirement(egg_requirement)
 
     def add_develop_eggs(self, develop_egg_list):
+        errors = []
         for egg_path in develop_egg_list:
             egg_path = _expand_dir(egg_path)
-            egg_requirement = InstallRequirement.from_editable(egg_path)
-            self._requirement_set.add_requirement(egg_requirement)
-            self._develop_egg_original_paths[egg_path] = egg_requirement
+            try:
+                egg_requirement = InstallRequirement.from_editable(egg_path)
+                self._requirement_set.add_requirement(egg_requirement)
+                self._develop_egg_original_paths[egg_path] = egg_requirement
+            except InstallationError as e:
+                log_exception(LOGGER, logging.DEBUG)
+                errors.append((egg_path, str(e)))
+        return errors
 
     def install(self):
         try:

uranium/tests/test_pip_manager.py

@@ -0,0 +1,16 @@
+from uranium.pip_manager import PipManager
+from nose.tools import eq_
+
+
+class TestPipManager(object):
+
+    def setUp(self):
+        self.pip = PipManager()
+
+    def test_nonexistent_develop_egg(self):
+        """
+        if there is an exception installing a develop egg,
+        warn instead of raise an exception
+        """
+        errors = self.pip.add_develop_eggs(['./gibberish'])
+        eq_(len(errors), 1)

uranium/uranium.py

@@ -69,7 +69,12 @@ def _create_bin_directory(self):
     def _install_eggs(self):
         develop_eggs = self._config.get('develop-eggs')
         if develop_eggs:
-            self._pip.add_develop_eggs(develop_eggs)
+            errors = self._pip.add_develop_eggs(develop_eggs)
+            for egg_path, error in errors:
+                msg = "WARNING: Unable to install develop egg at {0}: {1}".format(
+                    egg_path, error
+                )
+                LOGGER.warning(msg)
         # for some reason install can only be run once
         # it seems to be related to the packages being installed,
         # then attempting to install them again with the same

uranium/utils.py

@@ -0,0 +1,10 @@
+import traceback
+
+
+def log_exception(logger, level):
+    """
+    log an exception at a specific level
+
+    this should be called during exception handling.
+    """
+    logger.log(level, traceback.format_exc())