Stuck installing MongoDB on Mavericks OSX 10.9 brew install hangs at scons line

Question

brew install mongodb
==> Downloading http://downloads.mongodb.org/src/mongodb-src-r2.4.8.tar.gz
Already downloaded: /Library/Caches/Homebrew/mongodb-2.4.8.tar.gz
==> Downloading patches
######################################################################## 100.0%
######################################################################## 100.0%
==> Patching
patching file src/third_party/v8/SConscript
patching file src/third_party/v8/src/spaces.h
==> scons install --prefix=/usr/local/Cellar/mongodb/2.4.8 -j4 --64 --cc=/usr/bin/clang --cxx=/usr/bin/clang++ -stdlib=libstdc++

hangs indefinitely (10 min +).

here are the processes:

PID TTY           TIME CMD
428 ttys000    0:00.14 -bash
439 ttys001    0:00.14 -bash
425 ttys002    0:00.20 -bash
2472 ttys002    0:00.12 /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby -W0 /usr/local/Library/brew.rb inst
2491 ttys002    0:00.17 /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby -W0 -I /usr/local/Library/Homebrew 
2517 ttys002    0:08.25 python /usr/local/bin/scons install --prefix=/usr/local/Cellar/mongodb/2.4.8 -j4 --64 --cc=/usr/bin/cla
2583 ttys002    0:00.02 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -stdlib=
2584 ttys002    0:05.63 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -cc1 -trip
2599 ttys002    0:00.02 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -stdlib=
2600 ttys002    0:02.10 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -cc1 -trip
2605 ttys002    0:00.02 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -stdlib=
2606 ttys002    0:01.81 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -cc1 -trip
2607 ttys002    0:00.02 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -stdlib=
2608 ttys002    0:01.70 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -cc1 -trip
1351 ttys003    0:00.22 -bash

I have tried:

1. Updating Xcode command line tools for Mavericks
2. Updating Python

Answer 1

I was in the same situation today where it took more than 20 minutes for homebrew to install mongoDB (2.4.8 on Mavericks). It "hung" in clang and MBA fans went berserk. Give it more time.