trying to clone pypy's mercurial repo on windows

Trying to clone the pypy repo on my windows machine for some reason. I have mercurial installed, but I do not have svn installed. I know they just did the migration, but I didn't think I would need svn installed too? Here is the outp开发者_运维问答ut from my terminal.

C:\Documents and Settings\blahblah\programming>hg clone https://bitbucket.org/pypy
/pypy
destination directory: pypy
requesting all changes
adding changesets
adding manifests
adding file changes
added 40119 changesets with 127911 changes to 29936 files (+56 heads)
updating to branch default
abort: '"svn"' is not recognized as an internal or external command,
operable program or batch file.

Do I need svn? If so, why? If not, what happened?

This repository uses several SVN subrepositories.

$ cat .hgsub
greenlet = [svn]http://codespeak.net/svn/greenlet/trunk/c
testrunner = [svn]http://codespeak.net/svn/pypy/build/testrunner
lib_pypy/pyrepl = [svn]http://codespeak.net/svn/pyrepl/trunk/pyrepl/pyrepl
lib_pypy/sqlite3 = [svn]http://codespeak.net/svn/pypy/pysqlite2

This means that you will need subversion to update. I believe you'll find that you've pulled the repository successfully, it just can't update it without having the svn binary.