Convert Subversion Repositories to Mercurial

Finally found some time to migrate some projects from SVN to Hg. The enterprise SVN became so cumbersome and slow as people keep throwing all junks into it, which you have no control of.

• The 1st recipe was trying to convert directly using Hg in Working With Subversion Repositories

  hg convert --config convert.hg.tagsbranch=0 http://marshal.com/trunk/project1

  But there seemed a bug in Hg when the SVN requires HTTP authorization - even the user and password were correct it still could not pass through:
  
  initializing destination project1 repository
  http authorization required
  realm: crowd
  user: marshal
  password:
  real URL is http://marshal.com/trunk/project1/
  http authorization required
  realm: crowd
  user: marshal
  password:
  http authorization required
  realm: crowd
  user: marshal
  password:
  abort: HTTP Error 401: Authorization Required
  

• Now veer to the Python tool for Hg, which requires Python 2.5+ (already included on Ubuntu 8.1+) & SVN.Do the following:
  

  # svn not installed by default
  sudo apt-get install subversion
  # easy_install not included in Python package by default
  sudo apt-get install python-setuptools
  # download & install hgsvn
  sudo easy_install hgsvn

  Best match: hgsvn 0.1.6
  Downloading http://pypi.python.org/packages/2.5/h/hgsvn/hgsvn-0.1.6-py2.5.egg#md5=8d15f42a8f4cb8516e219b7952bd9607
  Processing hgsvn-0.1.6-py2.5.egg
  Moving hgsvn-0.1.6-py2.5.egg to /usr/lib/python2.5/site-packages
  Adding hgsvn 0.1.6 to easy-install.pth file
  Installing hgimportsvn script to /usr/bin
  Installing hgpullsvn script to /usr/bin
  
  Installed /usr/lib/python2.5/site-packages/hgsvn-0.1.6-py2.5.egg
  Processing dependencies for hgsvn
  Finished processing dependencies for hgsvn
  

• The real staff:

  hgimportsvn http://marshal.com/trunk/project1

  * svn 'info' '--xml' 'http://marshal.com/trunk/project1'
  Password for 'marshal':
  
  Then the program froze after you typed the password. (Well, it happened to me).
  So I have to manually run:

  svn info http://marshal.com/trunk/project1

  And key in the user name/password there, it passed.
  

• Import SVN project again:

  hgimportsvn http://marshal.com/trunk/project1

  This will import SVN's project1 into current directory and no authorization required any more.
  

  cd project1
  hgpullsvn

  pulls all SVN history. Then the daily use of mercurial starts...

Use TortoiseHg 0.5 to clone a Mercurial 1.0.2 SSH repository

If you just downloaded TortoiseHg v0.5, and try to clone the remote SSH repository, you'll get error message: "The system cannot execute the specified program." Now try:

TortoiseHg> TortoisePlink.exe
The system cannot execute the specified program.

So you have to install Microsoft Visual C++ 2005 SP1 Redistributable Package (x86) according to TortoiseHg FAQ. But even you have done that, it seems that TortoisePlink does not support private key for SSH well.

Now I just fall back to Putty as this is much more direct and prime. Modify Mercurial.ini under TortoiseHg:

; In order to push/pull over ssh you must specify a ssh tool
;ssh = "C:\TortoiseHg\TortoisePlink.exe" -ssh -2
ssh = "C:\Putty0.6\Plink.exe" -ssh -2 -i "C:\key\ubuntu-1.ppk"

Then right click->TortoiseHG->Clone a Repository->Source Path, input something like

ssh://root@192.168.10.1//home/env/mercurial/open-source/openJDK

Then click "clone", it works without a hitch.

Note: As Putty uses user's relative path to home, //home/env/... is to tell it this is an absolute path /home/env/...

Ref:

• http://tortoisehg.wiki.sourceforge.net/FAQ

• http://www.mail-archive.com/tortoisehg-develop@lists.sourceforge.net/msg00864.html

Install Mercurial 1.0.2 on Ubuntu 8.1 server using source code package

(Using root recommended)

If compiler and python not installed:

apt-get install build-essential python-dev
tar xvf mercurial-1.0.2.tar.gz
cd mercurial-1.0.2
make install

To verify,

hg debuginstall

Hopefully, you'll see

Checking encoding (UTF-8)...
Checking extensions...
Checking templates...
Checking patch...
Checking commit editor...
Checking username...
No username found, using 'root@hubuntus' instead
(specify a username in your .hgrc file)
No problems detected

And that's it.

Ref: http://www.selenic.com/mercurial/wiki/index.cgi/UnixInstall