I've been patching src/osdep/unix/env_unix.c in the imap-uw package 
manually for a while now so that I can specify a "mailsubdir" on my imap 
server. Finally I got tired of doing it over and over. This avoids the 
users' imap folders ending up in their home directory (which is the 
default).

This may not be the best approach in pkgsrc, but here's what I did on 
our system and it seems to work ok. Apply this patch and build with 
IMAP_UW_MAILSUBDIR="mail" and all imap folders show up in ${HOME}/mail 
for each user.



--- Makefile.orig       2004-01-21 05:41:21.000000000 +0000
+++ Makefile    2004-01-21 06:19:35.000000000 +0000
@@ -113,8 +113,15 @@
         done

  BUILD_DEFS+=   IMAP_UW_MAILSPOOLHOME
+BUILD_DEFS+=   IMAP_UW_MAILSUBDIR

  post-patch:
+.if defined(IMAP_UW_MAILSUBDIR)
+       cd ${WRKSRC}/src/osdep/unix &&                                  \
+       ${SED}  -e 's|mailsubdir = NIL|mailsubdir = 
"${IMAP_UW_MAILSUBDIR}"|'   \
+               env_unix.c > env_unix.c.new &&                          \
+       ${MV} -f env_unix.c.new env_unix.c
+.endif
  .if defined(IMAP_UW_MAILSPOOLHOME)
         cd ${WRKSRC}/src/osdep/unix &&                                  \
         ${SED}  -e 's|@SPOOLDIR@|myhomedir ()|'                         \