# Can a default path be set globally for \input{…} akin to \graphicspath{…}?

For the graphicx package, we can use \graphicspath{...} so that we can directly use filenames in the argument of \includegraphics{...}. Can a similar thing be done for directly using filenames in \input{...}. I know of the method mentioned here but if this was the way to do it, then why does \graphicspath{...} exist?

-

\graphicspath comes from LaTeX's \input@path, just using the paths for graphics files. \input@path can be set independently, e.g.:
\makeatletter

Internally package graphics stores its path of \graphicspath in \Ginput@path and locally sets \input@path to \Ginput@path, if it looks for files via \IfFileExists.