Disable shared feature by default since it is stil an experimental one. Enable...

Disable shared feature by default since it is stil an experimental one. Enable it only if shared-part is defined.

slapos/recipe/cmmi/README.txt

@@ -1017,7 +1017,7 @@ Use option ``shared`` to install a shared pacakge.
     >>> os.mkdir(shared_dir)
 
 
-If no shared-part is set, and shared is True, an error is raised:
+If no shared-part is set, and shared is True, shared feature is not used:
     >>> write('buildout.cfg',
     ... """
     ... [buildout]
@@ -1031,12 +1031,13 @@ If no shared-part is set, and shared is True, an error is raised:
     ... """% src)
     
     >>> print system(buildout) #doctest:+ELLIPSIS
-    While:
-     Installing.
-     Getting section package.
-     Initializing section package.
-     ...
-     ValueError:  Set ${buildout:shared-part} for shared feature
+    Uninstalling package.
+    Uninstalling package-2.
+    Installing package.
+    package: [ENV] TMP = /sample_buildout/parts/package/tmp
+    configure --prefix=/sample_buildout/parts/package
+    building package
+    installing package
 
 If shared-part is set and shared is True, build package failed, the build directory is removed, a build directory__complile__ is left for debugging
     >>> _ = system('mv %s/package-0.0.0.tar.gz  %s/package-0.0.0.tar.gz.bak' % (src, src))
@@ -1065,7 +1066,6 @@ If shared-part is set and shared is True, build package failed, the build direct
     >>> print system(buildout) #doctest:+ELLIPSIS
     package: shared directory  .../slapos.recipe.cmmi/slapos/recipe/cmmi/shared/package/... set for package
     Uninstalling package.
-    Uninstalling package-2.
     Installing package.
     package: Checking whether package is installed at shared path: .../slapos.recipe.cmmi/slapos/recipe/cmmi/shared/package/...
     package: [ENV] TMP = .../slapos.recipe.cmmi/slapos/recipe/cmmi/shared/package/.../tmp

slapos/recipe/cmmi/__init__.py

@@ -41,12 +41,8 @@ class Recipe(object):
             options.update(platform_options)
 
         shared = options.get('shared', '').lower()
-        if shared ==  'true':
+        if shared ==  'true' and buildout['buildout'].get('shared-part', None):
            shared_part = buildout['buildout'].get('shared-part', None)
-           if not shared_part:
-               raise ValueError(
-                  " Set ${buildout:shared-part} for shared feature")
-
            shared = os.path.join(shared_part.strip().rstrip('/'), self.name)
            if not os.path.exists(shared):
               os.makedirs(shared)
@@ -69,6 +65,8 @@ class Recipe(object):
 
            shared = os.path.join(shared, m.hexdigest())
            log.info('shared directory  %s set for %s', shared, self.name)
+        else:
+          shared = ''
 
         options['shared'] = shared
         default_location = options['default-location'] = os.path.join(
@@ -329,7 +327,7 @@ class Recipe(object):
                 opt['destination'] = compile_dir
                 opt['strip-top-level-dir'] = 'false'
                 # no need to shared build for compile dir
-                opt['shared'] = 'False'
+                opt['shared'] = 'false'
                 slapos.recipe.downloadunpacked.Recipe(
                     self.buildout, self.name, opt).install()
             except: