my websearch for how to install it led me to the instructions (http://wiki.panotools.org/Hugin_Compiling_Ubuntu) which istructed me to:

sudo add-apt-repository ppa:hugin/hugin-builds; sudo apt-get update;

sudo apt-get install hugin enblend panini

which, after it ran, spat out:

Reading package lists... Done

Building dependency tree

Reading state information... Done

E: Unable to locate package panini

but I later learned that panini just another program that can be used for scaling batches of files and so isn't really necessary... I suppose. didn't I just learn how to use 'convert' for this purpose. panini is a dependency though. I thought dependencies were required.

In any case I read the gimp help file on installing pugins and it says after the install of the plugin one needs to activate it. I tried following their instructions but could not locate the hugin plugin in the tree nor by "launch the Plugin Description dialog (from Xtns/Plugins Details). I couldn't find the xtns menu.