Created attachment 149030 [details]
A patch for www/polipo.

(1) Cannot use a cache directory
(2) Don't remove a cache directory unconditionally at uninstallation
(3) Fix messages such as "pkg-static: unlinkat(usr/local/etc/polipo/):
    No such file or directory" at uninstallation

(1) Cannot use a cache directory
    (Update: pkg-plist files/pkg-install.in)

The owner, group and permission of a cache directory is configured by
the pkg-install script:

| elif [ "$2" = "POST-INSTALL" ]; then
|  if [ ! -d "%%DESTDIR%%$POLIPOCACHE" ]; then
|   mkdir -p "%%DESTDIR%%$POLIPOCACHE" || exit 1
|   chown "$POLIPOUSER:$POLIPOGROUP" "%%DESTDIR%%$POLIPOCACHE" || exit 1
|   chmod ug=rwx,o= "%%DESTDIR%%$POLIPOCACHE" || exit 1
|  fi

But the directory has already been created in Makefile.
So the above commands are never executed.

As a result, though the proxying works well, polipo cannot use the cache
directory (because a lack of write permission).  And polipo outputs a lot of
error messages to /var/log/polipo like this:

| Couldn't create directory /var/cache/polipo/svnweb.freebsd.org/: Permission denied

To solve the problem, add appropriate arguments (owner, group, permission)
to the @dir keyword in pkg-plist.

(2) Don't remove a cache directory unconditionally at uninstallation
    (Update: files/pkg-deinstall.in)

When the port is uninstalled, the cache directory is always deleted (rm -r)
by pkg-deinstall even if it has cache contents.

Now the directory is handled by pkg (with @dir) properly.
I remove the delete routine from pkg-deinstall.

(3) Fix messages such as "pkg-static: unlinkat(usr/local/etc/polipo/):
    No such file or directory" at uninstallation
    (Update: files/pkg-deinstall.in)

When the port is uninstalled, some directories are deleted manually (rmdir)
by pkg-deinstall.  These directories are handled by pkg automatically.
I remove these commands from pkg-deinstall.