Pls disregard my previous msg. Gmail on my Android showed Nimit's post from 2/18 when I opened the thread and I thought it was in response to my post from earlier today.

Anyways... Here's what happened when I uninstalled gtg, autoremoved python-liblarch and then installed gtg. As you can see, python-liblarch does get installed when gtg is installed.
-----
$ sudo apt-get purge gtg
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following package was automatically installed and is no longer required:
   python-liblarch (2.1.0-2)
Use 'apt-get autoremove' to remove it.
The following packages will be REMOVED:
   gtg* (0.3.1.r78~ubuntu14.04.1)
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 10.5 MB disk space will be freed.
Do you want to continue? [Y/n] 
(Reading database ... 535058 files and directories currently installed.)
Removing gtg (0.3.1.r78~ubuntu14.04.1) ...                                                                                                                        
Purging configuration files for gtg (0.3.1.r78~ubuntu14.04.1) ...
Processing triggers for hicolor-icon-theme (0.13-1) ...
Processing triggers for gnome-menus (3.10.1-0ubuntu2) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu1) ...
Processing triggers for mime-support (3.54ubuntu1) ...

$ sudo apt-get autoremove python-liblarch
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  python-liblarch
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 171 kB disk space will be freed.
Do you want to continue? [Y/n] 
(Reading database ... 534594 files and directories currently installed.)
Removing python-liblarch (2.1.0-2) ...

$ sudo apt-get purge python-liblarch
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package 'python-liblarch' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

$ sudo apt-get install gtg
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
   python-liblarch (2.1.0-2)
Suggested packages:
   bugz (0.10.1-3)
   python-cheetah (2.4.4-3.fakesyncbuild1)
   python-evolution ()
   python-geoclue (0.1.0-4build1)
   python-suds (0.4.1-11ubuntu0.1)
The following NEW packages will be installed:
   gtg (0.3.1.r78~ubuntu14.04.1)
   python-liblarch (2.1.0-2)
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 27.1 kB/3,654 kB of archives.
After this operation, 10.7 MB of additional disk space will be used.
Do you want to continue? [Y/n] 
Get:1 http://archive.ubuntu.com/ubuntu/ trusty/universe python-liblarch all 2.1.0-2 [27.1 kB]
Fetched 27.1 kB in 0s (113 kB/s)         
Selecting previously unselected package python-liblarch.
(Reading database ... 534565 files and directories currently installed.)
Preparing to unpack .../python-liblarch_2.1.0-2_all.deb ...
Unpacking python-liblarch (2.1.0-2) ...
Selecting previously unselected package gtg.
Preparing to unpack .../gtg_0.3.1.r78~ubuntu14.04.1_all.deb ...
Unpacking gtg (0.3.1.r78~ubuntu14.04.1) ...
Processing triggers for gnome-menus (3.10.1-0ubuntu2) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu1) ...
Processing triggers for mime-support (3.54ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.13-1) ...
Processing triggers for man-db (2.6.7.1-1) ...
Setting up python-liblarch (2.1.0-2) ...
Setting up gtg (0.3.1.r78~ubuntu14.04.1) ...