mongodb install fails with dependency error

[chad@…]

i've run port selfupdate already. trying to install the mongodb port, i get this (truncated, b/c the output is huge):

sudo port -d install mongodb
DEBUG: Changing to port directory: /opt/local/var/macports/sources/rsync.macports.org/release/ports/databases/mongodb
DEBUG: OS darwin/10.4.0 (Mac OS X 10.6) arch i386
DEBUG: org.macports.load registered provides 'load', a pre-existing procedure. Target override will not be provided
DEBUG: org.macports.unload registered provides 'unload', a pre-existing procedure. Target override will not be provided
DEBUG: org.macports.distfiles registered provides 'distfiles', a pre-existing procedure. Target override will not be provided
DEBUG: Using group file /opt/local/var/macports/sources/rsync.macports.org/release/ports/_resources/port1.0/group/archcheck-1.0.tcl
DEBUG: Reading variant descriptions from /opt/local/var/macports/sources/rsync.macports.org/release/ports/_resources/port1.0/variant_descriptions.conf
DEBUG: universal variant already exists, so not adding the default one
DEBUG: Starting logging for mongodb
DEBUG: epoch: in tree: 0 installed: 0
DEBUG: boost 1.44.0_0 exists in the ports tree
DEBUG: boost 1.44.0_0  is the latest installed
DEBUG: boost 1.44.0_0  is active
DEBUG: Merging existing variants '' into variants
DEBUG: new fully merged portvariants: 
DEBUG: Changing to port directory: /opt/local/var/macports/sources/rsync.macports.org/release/ports/devel/boost

...snip...

DEBUG: Found Dependency: receipt exists for pkgconfig
DEBUG: Searching for dependency: zlib
DEBUG: Found Dependency: receipt exists for zlib
DEBUG: Searching for dependency: xrender
DEBUG: Didn't find receipt, going to depspec regex for: xrender
DEBUG: Searching for dependency: freetype
DEBUG: Didn't find receipt, going to depspec regex for: freetype
DEBUG: Searching for dependency: fontconfig
DEBUG: Didn't find receipt, going to depspec regex for: fontconfig
DEBUG: Searching for dependency: expat
DEBUG: Found Dependency: receipt exists for expat
DEBUG: Searching for dependency: pkgconfig
DEBUG: Found Dependency: receipt exists for pkgconfig
DEBUG: Searching for dependency: xorg-libX11
DEBUG: Didn't find receipt, going to depspec regex for: xorg-libX11
DEBUG: Searching for dependency: xorg-renderproto
DEBUG: Didn't find receipt, going to depspec regex for: xorg-renderproto
DEBUG: Searching for dependency: pkgconfig
DEBUG: Found Dependency: receipt exists for pkgconfig
DEBUG: Searching for dependency: xorg-util-macros
DEBUG: Didn't find receipt, going to depspec regex for: xorg-util-macros
DEBUG: too many nested evaluations (infinite loop?)
    while executing
"lshift args"
    (procedure "try" line 7)
    invoked from within
"try {
                    seek $fd $offset
                    gets $fd line
                    set name [lindex $line 0]
                    set len..."
    (procedure "mportlookup" line 23)
    invoked from within
"mportlookup $dep_portname"
Error: Internal error: port lookup failed: too many nested evaluations (infinite loop?)
Error: Status 1 encountered during processing.

[ryandesign@…]

Please use WikiFormatting.

Is this a duplicate of #26387? Has this already been fixed by r71286? Please "sudo port selfupdate" and try again.