Error installing mapnik2 using homebrew

mapnik2-homebrew-install.txt

MacBook-Pro-de-Felix-Pedrera-Garcia:~ felix$ brew install mapnik2 -v
==> Checking out http://svn.mapnik.org/trunk/
/usr/bin/svn up --force http://svn.mapnik.org/trunk/ /Users/felix/Library/Caches/Homebrew/mapnik2--svn
Skipped 'http://svn.mapnik.org/trunk'
At revision 2998.
Summary of conflicts:
  Skipped paths: 1
/usr/bin/svn export --force /Users/felix/Library/Caches/Homebrew/mapnik2--svn /private/tmp/homebrew-mapnik2-HEAD-FQKf
Export complete.
==> scons PREFIX=/usr/local/Cellar/mapnik2/HEAD ICU_INCLUDES=/usr/local/Cellar/icu4c/4.4.1/include ICU_LIBS=/usr/local/Cellar/icu4c/4.4.1/lib JOBS=2 install
scons PREFIX=/usr/local/Cellar/mapnik2/HEAD ICU_INCLUDES=/usr/local/Cellar/icu4c/4.4.1/include ICU_LIBS=/usr/local/Cellar/icu4c/4.4.1/lib JOBS=2 install
scons: Reading SConscript files ...

Welcome to Mapnik...

*********************************************
You are compiling Mapnik trunk (aka Mapnik2)
See important details at:
http://trac.mapnik.org/wiki/Mapnik2
*********************************************

Configuring build environment...
Configuring on Darwin in *release mode*...
Checking for freetype-config... yes
Checking for xml2-config... yes
Sorting lib and inc compiler paths by priority... internal,other,frameworks,user,system(cached) yes
Checking for C library m... yes
Checking for C library ltdl... yes
Checking for C library png... yes
Checking for C library tiff... yes
Checking for C library z... yes
Checking for C library proj... yes
Checking for C++ library icuuc... yes
Checking for C library jpeg... yes
dyld: Library not loaded: libicuuc.44.dylib
  Referenced from: /private/tmp/homebrew-mapnik2-HEAD-FQKf/.sconf_temp/conftest_10
  Reason: image not found
sh: line 1: 13625 Trace/BPT trap          .sconf_temp/conftest_10 > ".sconf_temp/conftest_10.out"
Checking for ICU version >= 4.2... (cached) Searching for boost libs and headers... (cached) 
  *libs found: /usr/local/lib
  *headers found: /usr/local/include
  *lib naming extension found: -mt
dyld: Library not loaded: libicuuc.44.dylib
  Referenced from: /private/tmp/homebrew-mapnik2-HEAD-FQKf/.sconf_temp/conftest_11
  Reason: image not found
sh: line 1: 13638 Trace/BPT trap          .sconf_temp/conftest_11 > ".sconf_temp/conftest_11.out"
dyld: Library not loaded: libicuuc.44.dylib
  Referenced from: /private/tmp/homebrew-mapnik2-HEAD-FQKf/.sconf_temp/conftest_12
  Reason: image not found
sh: line 1: 13649 Trace/BPT trap          .sconf_temp/conftest_12 > ".sconf_temp/conftest_12.out"
Checking for Boost version >= 1.41... no
Boost version 1.41 or greater is required
Checking for C++ library boost_system-mt... yes
Checking for C++ library boost_filesystem-mt... yes
Checking for C++ library boost_regex-mt... yes
Checking for C++ library boost_program_options-mt... yes
Checking for C++ library boost_thread-mt... yes
Checking for requested plugins dependencies...
Checking for C library sqlite3... yes
Checking if gdal is ogr enabled... yes
Checking for name of ogr library... gdal
Checking for gdal-config --libs... yes
Checking for gdal-config --cflags... yes
Checking for name of gdal library... gdal
Checking for pg_config... yes
Checking for pkg-config... yes
Checking for cairo... yes
Checking for cairomm-1.0... yes
Checking for at least version 1.8.0 for cairomm-1.0... yes
Checking for C++ header file boost/python/detail/config.hpp... yes
Checking for pkg-config... yes
Checking for pycairo... no

Exiting... the following required dependencies were not found:
   - icuuc (ICU C++ library | configure with ICU_LIBS & ICU_INCLUDES or use ICU_LIB_NAME to specify custom lib name  | more info: http://site.icu-project.org/)
   - boost version >=1.41 (more info see: http://trac.mapnik.org/wiki/MapnikInstallation & http://www.boost.org)

See '/private/tmp/homebrew-mapnik2-HEAD-FQKf/config.log' for details on possible problems.

Also, these OPTIONAL dependencies were not found:
   - pycairo (Python bindings to Cairo library | configured using pkg-config | try setting PKG_CONFIG_PATH SCons option)

Set custom paths to these libraries and header files on the command-line or in a file called 'config.py'
    ie. $ python scons/scons.py BOOST_INCLUDES=/usr/local/include BOOST_LIBS=/usr/local/lib

Once all required dependencies are found a local 'config.py' will be saved and then install:
    $ sudo python scons/scons.py install

To view available path variables:
    $ python scons/scons.py --help or -h

To view overall SCons help options:
    $ python scons/scons.py --help-options or -H

More info: http://trac.mapnik.org/wiki/MapnikInstallation
==> Exit Status: 1
http://github.com/mxcl/homebrew/blob/master/Library/Formula/mapnik2.rb#L20
==> Environment
HOMEBREW_VERSION: 0.8
HEAD: (none)
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
HOMEBREW_REPOSITORY: /usr/local
HOMEBREW_LIBRARY_PATH: /usr/local/Library/Homebrew
Hardware: 8-core 64-bit dunno
OS X: 10.6.7
Kernel Architecture: x86_64
Ruby: 1.8.7-174
/usr/bin/ruby => /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
Xcode: 4.0.2
GCC-4.0: N/A 
GCC-4.2: build 5666 
LLVM: build 2335 
MacPorts or Fink? false
X11 installed? true
==> Build Flags
CC: /usr/bin/cc => /usr/llvm-gcc-4.2/bin/llvm-gcc-4.2
CXX: /usr/bin/c++ => /usr/bin/c++-4.2
LD: /usr/bin/cc => /usr/llvm-gcc-4.2/bin/llvm-gcc-4.2
CFLAGS: -O3 -w -pipe
CXXFLAGS: -O3 -w -pipe
CPPFLAGS: -I/usr/local/Cellar/icu4c/4.4.1/include -I/usr/X11/include
LDFLAGS: -L/usr/local/Cellar/icu4c/4.4.1/lib -L/usr/X11/lib
MAKEFLAGS: -j8
PKG_CONFIG_PATH: /usr/local/Cellar/icu4c/4.4.1/lib/pkgconfig

Error: Failed executing: scons PREFIX=/usr/local/Cellar/mapnik2/HEAD ICU_INCLUDES=/usr/local/Cellar/icu4c/4.4.1/include ICU_LIBS=/usr/local/Cellar/icu4c/4.4.1/lib JOBS=2 install
Please report this bug: https://github.com/mxcl/homebrew/wiki/Checklist-before-filing-a-new-issue
These existing issues may help you:
https://github.com/mxcl/homebrew/issues/#issue/3150

Also try:
  `brew doctor` to check your setup for common problems.
  `brew missing` to check installed packages for missing deps.