I need to install the tikz libraries such as decorations. I have a tex installation (which i suspect is an old installation) with some tikz libraries such as shapes, arrows, snakes and patterns. I am told snakes package is deprecated.
How can I install decorations library of tikz?
I couldn't find it in github. The repository Qrrbrbirlbel/pgf doesn't contain decorations library. Searching in CTAN didn't help either. I am interested in decorations.pathreplacing and decorations.pathmorphing in particular.
If the library cannot be installed, can I download the file pgflibrarytikzdecorations.code.tex and use it?