Fixed bug:

When using a local find links or index, distributions weren't copied
 to the download cache.

CHANGES.txt

@@ -24,6 +24,9 @@ Bugs Fixed
 
 - The setup command raised a stupid exception if run without arguments.
 
+- When using a local find links or index, distributions weren't copied
+  to the download cache.
+
 1.0.0b30 (2007-08-20)
 =====================
 

src/zc/buildout/easy_install.py

@@ -400,8 +400,23 @@ class Installer:
         best.sort()
         return best[-1]
 
-    def _fetch(self, dist, tmp):
-        return dist.clone(location=self._index.download(dist.location, tmp))
+    def _fetch(self, dist, tmp, download_cache):
+        if (download_cache
+            and (os.path.dirname(dist.location) == download_cache)
+            ):
+            return dist
+
+        new_location = self._index.download(dist.location, tmp)
+        if (download_cache
+            and (new_location == dist.location)
+            and os.path.isfile(new_location)
+            ):
+            # setuptools avoids making extra copies, but we want to copy
+            # to the download cache
+            shutil.copy2(new_location, tmp)
+            new_location = os.path.join(tmp, os.path.basename(new_location))
+            
+        return dist.clone(location=new_location)
 
     def _get_dist(self, requirement, ws, always_unzip):
 
@@ -424,15 +439,11 @@ class Installer:
             sys.path_importer_cache.clear()
 
             tmp = self._download_cache
+            if tmp is None:
+                tmp = tempfile.mkdtemp('get_dist')
+
             try:
-                if tmp:
-                    if os.path.dirname(avail.location) == tmp:
-                        dist = avail
-                    else:
-                        dist = self._fetch(avail, tmp)
-                else:
-                    tmp = tempfile.mkdtemp('get_dist')
-                    dist = self._fetch(avail, tmp)
+                dist = self._fetch(avail, tmp, self._download_cache)
 
                 if dist is None:
                     raise zc.buildout.UserError(
@@ -626,15 +637,11 @@ class Installer:
         logger.debug('Building %r', spec)
 
         tmp = self._download_cache
+        if tmp is None:
+            tmp = tempfile.mkdtemp('get_dist')
+
         try:
-            if tmp:
-                if os.path.dirname(avail.location) == tmp:
-                    dist = avail
-                else:
-                    dist = self._fetch(avail, tmp)
-            else:
-                tmp = tempfile.mkdtemp('get_dist')
-                dist = self._fetch(avail, tmp)
+            dist = self._fetch(avail, tmp, self._download_cache)
 
             build_tmp = tempfile.mkdtemp('build')
             try:

src/zc/buildout/tests.py

@@ -2056,6 +2056,36 @@ directory and then use the wacky extension to load the demo package
     
     """
 
+def distributions_from_local_find_links_make_it_to_download_cache():
+    """
+
+If we specify a local directory in find links, distors found there
+need to make it to the download cache.
+
+    >>> mkdir('test')
+    >>> write('test', 'setup.py',
+    ... '''
+    ... from setuptools import setup
+    ... setup(name='foo')
+    ... ''')
+
+    >>> print system(buildout+' setup test bdist_egg'), # doctest: +ELLIPSIS
+    Running setup script 'test/setup.py'.
+    ...
+
+
+    >>> mkdir('cache')
+    >>> old_cache = zc.buildout.easy_install.download_cache('cache')
+    >>> list(zc.buildout.easy_install.install(['foo'], 'eggs',
+    ...          links=[join('test', 'dist')])) # doctest: +ELLIPSIS
+    [foo 0.0.0 ...
+        
+    >>> ls('cache')
+    -  foo-0.0.0-py2.4.egg
+
+    >>> _ = zc.buildout.easy_install.download_cache(old_cache)
+    
+    """
 
 def create_egg(name, version, dest):
     d = tempfile.mkdtemp()