diff --git a/backup-nixos-configs.sh b/backup-nixos-configs.sh
index 0bc9906..68a68ac 100755
--- a/backup-nixos-configs.sh
+++ b/backup-nixos-configs.sh
@@ -3,7 +3,7 @@
 DEVICE=$1
 
 if [ -z $DEVICE ] ; then
-	echo "missing 1st argument (DEVICE), ie. the name of the device where the backup is being done"
+	echo "missing 1st argument (DEVICE), ie. the name of the device where the backup is being done (eg. thinkpad, surface)"
 	exit 1
 fi
 
diff --git a/init.vim b/init.vim
index a79739e..563cb52 100644
--- a/init.vim
+++ b/init.vim
@@ -66,7 +66,6 @@ Plug 'iden3/vim-circom-syntax'
 " LaTeX support. It needs latexmk & zathura
 Plug 'lervag/vimtex'
 
-
 " deoplete
 Plug 'Shougo/deoplete.nvim'
 let g:deoplete#enable_at_startup = 1
@@ -111,6 +110,8 @@ Plug 'srcery-colors/srcery-vim'
 Plug 'rakr/vim-one'
 Plug 'morhetz/gruvbox'
 
+Plug 'szw/vim-maximizer'
+
 call plug#end()
 
 let $NVIM_TUI_ENABLE_TRUE_COLOR=1
@@ -245,6 +246,12 @@ augroup filetypedetect
   au! BufRead,BufNewFile *.sage,*.spyx,*.pyx setfiletype python
 augroup END
 
+"" wat (wasm) syntax
+autocmd BufNewFile,BufReadPost *.wat setlocal filetype=wast
+
+" maximize current split or return to previous
+noremap <C-w>m :MaximizerToggle<CR>
+
 " for file watching
 set backupcopy=yes
 
@@ -252,9 +259,6 @@ set backupcopy=yes
 vnoremap  <leader>y  "+y
 vnoremap  <leader>p  "+p
 
-" disable mouse
-set mouse=
-
 " shortcut for theme change
 nnoremap <F9> :colorscheme gruvbox \| set background=dark \| highlight normal ctermbg=0 guibg=#000000 <CR>
 nnoremap <F10> :colorscheme one \| set background=light \| highlight normal guibg=#ffffff<CR>
diff --git a/nixos/common-configuration.nix b/nixos/common-configuration.nix
index fe38333..01aa139 100644
--- a/nixos/common-configuration.nix
+++ b/nixos/common-configuration.nix
@@ -23,9 +23,7 @@
 
 
   environment.systemPackages = with pkgs; [
-	# minimal
-  	vim
-	neovim
+	# utilities
  	wget
 	tmux
 	git
@@ -33,29 +31,46 @@
 	tig
 	mosh
 	bat
-	lf
 	ripgrep
 	fzf
 	screenfetch
 	htop
+	jq
+	keynav
+	unzip
+	gnutar
+	xorg.xmodmap # keyboard remapping
+	xfce.xfce4-screenshooter
+
+	# code editors
+  	vim
+	neovim
+	vimHugeX # to make clipboard work in vim
+	xclip # to make clipboard work in neovim
+
+	# terminals
 	alacritty
+	kitty
+
+	# pdf
 	zathura
 	mate.atril
-	xclip # to make clipboard work in neovim
-	xorg.xmodmap
-	xfce.xfce4-screenshooter
+
+	# file explorers/managers
+	lf
+	yazi
 	xfce.thunar
 	xfce.xfconf # needed to save preferences of thunar
 	xfce.ristretto
 	xfce.tumbler # for thumbnails of imgs
-	pavucontrol
-	jq
-	keynav
 
-	# other
+	# media
+	pavucontrol
 	mpv
+	vlc
 	feh
 	kolourpaint
+	calibre
 
 	# browsers
 	firefox
@@ -81,12 +96,15 @@
 	openssl
 	stdenv
 	rustup
+	wabt # wasm binary toolkit
+	wasmedge # to execute wasm binaries
 	sage
 	go
-	python3
+	(python3.withPackages(ps: with ps; [
+		matplotlib numpy
+	]))
 	pipx
 	nodejs
-
   ];
 
   environment.variables = {