How to install neovim from git

I want to install neovim-gtk, but it needs neovim version >= 0.2.2 while on my computer (debian linux v9.3) its version is still 0.1.7, so i have to install from git.

Here's what I do:

	# Install neovim from source / git in debian linux
	# Build prerequisites
	$ sudo apt install ninja-build libtool libtool-bin autoconf automake cmake g++ pkg-config unzip
	Reading package lists... Done
	Building dependency tree
	Reading state information... Done
	autoconf is already the newest version (2.69-10).
	automake is already the newest version (1:1.15-6).
	cmake is already the newest version (3.7.2-1).
	g++ is already the newest version (4:6.3.0-4).
	libtool is already the newest version (2.4.6-2).
	pkg-config is already the newest version (0.29-4+b1).
	unzip is already the newest version (6.0-21).
	unzip set to manually installed.
	The following NEW packages will be installed:
	libtool-bin ninja-build
	0 upgraded, 2 newly installed, 0 to remove and 1 not upgraded.
	Need to get 523 kB of archives.
	After this operation, 1,034 kB of additional disk space will be used.
	# I remove the ninja-build because it generated an error when it was used,
	# it looks like there is a missing configuration file
	$ sudo apt remove ninja-build
	$ mkdir ~/neovim && cd $_
	$ git clone https://github.com/neovim/neovim && cd $_
	# I prefer /opt as a non-deb package installation path to make maintenance easier
	$ make CMAKE_BUILD_TYPE=Release CMAKE_EXTRA_FLAGS="-DCMAKE_INSTALL_PREFIX=/opt/neovim"
	$ sudo make install
	$ sudo ln -s /opt/neovim/bin/nvim /usr/bin/nvim
	$ sudo ln -s /opt/neovim/share/applications/nvim.desktop /usr/share/applications/nvim.desktop
	$ sudo ln -s /opt/neovim/share/pixmaps/nvim.png /usr/share/icons/nvim.png
	# to run neovim
	$ nvim
	# to quit vim/neovim without saving data, type
	:q!
	# to save data then quit vim/neovim, type
	:wq
	# attaention! nearly every command / shotcut in vim/neovim start by typing ':'
	# tutorial for newbie
	$ vimtutor

view raw installing-neovim hosted with ❤ by GitHub

Thank you for reading, your feedback is awaited.