implement multi-root support

one can now specify multiple package roots. watch out for filename
conflicts!

pypiserver/__init__.py

@@ -20,7 +20,6 @@ def app(root=None,
     if fallback_url is None:
         fallback_url = "http://pypi.python.org/simple"
 
-    os.listdir(root)
     _app.configure(root=root, redirect_to_fallback=redirect_to_fallback, fallback_url=fallback_url,
                    password_file=password_file)
     _app.app.module = _app

pypiserver/_app.py

@@ -1,4 +1,4 @@
-import sys, os
+import sys, os, itertools
 
 if sys.version_info >= (3, 0):
     from urllib.parse import urljoin
@@ -39,8 +39,21 @@ def configure(root=None,
     if fallback_url is None:
         fallback_url = "http://pypi.python.org/simple"
 
-    packages = lambda: listdir(root)
+    if not isinstance(root, (list, tuple)):
-    packages.root = root
+        roots = [root]
+    else:
+        roots = root
+
+    roots = [os.path.abspath(r) for r in roots]
+    for r in roots:
+        try:
+            os.listdir(r)
+        except Exception:
+            err = sys.exc_info()[1]
+            sys.exit("Error: while trying to list %r: %s" % (r, err))
+
+    packages = lambda: itertools.chain(*[listdir(r) for r in roots])
+    packages.root = roots[0]
 
     config.redirect_to_fallback = redirect_to_fallback
     config.fallback_url = fallback_url

pypiserver/core.py

@@ -1,7 +1,7 @@
 #! /usr/bin/env python
 """minimal PyPI like server for use with pip/easy_install"""
 
-import os, sys, getopt, re, mimetypes, warnings
+import os, sys, getopt, re, mimetypes, warnings, itertools
 
 warnings.filterwarnings("ignore", "Python 2.5 support may be dropped in future versions of Bottle")
 from pypiserver import bottle, __version__, app
@@ -238,31 +238,24 @@ def main(argv=None):
 
     if len(roots) == 0:
         roots.append(os.path.expanduser("~/packages"))
-    elif len(roots) > 1:
-        sys.exit("Error: more than one root directory specified: %r" % (roots,))
 
-    root = os.path.abspath(roots[0])
+    roots = [os.path.abspath(x) for x in roots]
 
-    try:
-        os.listdir(root)
-    except Exception:
-        err = sys.exc_info()[1]
-        sys.exit("Error: while trying to list %r: %s" % (root, err))
 
     if command == "update":
-        packages = frozenset(listdir(root))
+        packages = frozenset(itertools.chain(*[listdir(r) for r in roots]))
         from pypiserver import manage
         manage.update(packages, update_directory, update_dry_run, stable_only=update_stable_only)
         return
 
     a = app(
-        root=root,
+        root=roots,
         redirect_to_fallback=redirect_to_fallback,
         password_file=password_file,
         fallback_url=fallback_url
     )
     server = server or "auto"
-    sys.stdout.write("This is pypiserver %s serving %r on http://%s:%s\n\n" % (__version__, root, host, port))
+    sys.stdout.write("This is pypiserver %s serving %r on http://%s:%s\n\n" % (__version__, ", ".join(roots), host, port))
     sys.stdout.flush()
     run(app=a, host=host, port=port, server=server)
 

tests/test_main.py

@@ -70,9 +70,9 @@ def test_root_r(main):
     assert main.pkgdir == os.path.abspath(".")
 
 
-def test_root_multiple(main):
+# def test_root_multiple(main):
-    pytest.raises(SystemExit, main, [".", "."])
+#     pytest.raises(SystemExit, main, [".", "."])
-    pytest.raises(SystemExit, main, ["-r", ".", "."])
+#     pytest.raises(SystemExit, main, ["-r", ".", "."])
 
 
 def test_fallback_url(main):