* With --fetch-only you can fetch updated packages at a place which

has a fast connection but you do not need to wait them to be installed.
You can always upgrade anywhere else with the cached packages.
(Onursan's special request)

pisi/cli/commands.py

@@ -567,6 +567,8 @@ expanded to package names.
                      default=False, help=_("Ignore file conflicts"))
         p.add_option("-e", "--eager", action="store_true",
                      default=False, help=_("eager upgrades"))
+        p.add_option("-f", "--fetch-only", action="store_true",
+                     default=False, help=_("Fetch upgrades but do not install."))
 
     def run(self):
         self.init()

pisi/operations.py

@@ -468,6 +468,10 @@ def upgrade_pkg_names(A = []):
         install_op = atomicoperations.Install.from_name(x)
         paths.append(install_op.package_fname)
 
+    # fetch to be upgraded packages but do not install them.
+    if ctx.get_option('fetch_only'):
+        return
+   
     for path in paths:
         install_op = atomicoperations.Install(path, ignore_file_conflicts = True)
         install_op.install(True)