Haskell, Leksah installation on Ubuntu 18.04 LTS

sudo apt-get update

sudo apt-get install haskell-platform

sudo apt-get install libgirepository1.0-dev libwebkit2gtk-4.0-dev libgtksourceview-3.0-dev

git clone --recursive https://github.com/leksah/leksah.git

cd leksah

cabal update

cabal install alex happy

cabal install haskell-gi

#Edit as admin etc/enviorment file to add cabal path

sudo gedit /etc/environment

e.g. I added following line to the end of $PATH 

:~/bulbul_bin/leksah/leksah.sh

#Relogin or run following for path changes to get effect

. /etc/environment

#Run leksah shell to start installation

./leksah.sh

#For creating Desktop launcher, add following line at top of leksah.sh as shown here

cd $(dirname $0)

#Create a custom launcher using methods given here

sudo apt-get install --no-install-recommends gnome-panel gnome-desktop-item-edit ~/Desktop/ --create-new

Conversion from word to lyx

1. sudo apt-get install abiword
2. open the word document in abiword
3. save as latex (.tex) document (from "save file as type" select latex )
4. Once you have .tex, open lyx and import the .tex into it

Configuring Lyx for including "Document Class" for "article (Springer LNCS)"

1. Download llncs2e.zip
2. Extract to or copy extracted folder llncs2e to /usr/share/texmf/tex/latex
3. In terminal: sudo texhash
4. In Lyx: Tools --> Reconfigure
5. Restart Lyx
6. In Lyx: Douments ---> Settings

In document class listing you must now see the "article (Springer LNCS)"