Building a package gives: Single file templates does not match package name

I want to update a package that originally was a single file. Now, it contains a directory with some files.

The original recipe was: (tikz :repo "emiliotorres/tikz" :fetcher github) And according to this, I think the new version must be (tikz :repo "emiliotorres/tikz" :fetcher github :files ("templates/*.el" "templates")) .

I copy the new version of emiliotorres/tikz into the local copy of melpa/package-build and

make -k recipes/tikz

And I get this error

 • Building package tikz ...
Package: tikz
Fetcher: github
Source:  https://github.com/emiliotorres/tikz.git
Updating /home/emilio/temp/melpa2/working/tikz/
Single file templates does not match package name tikz
make: [Makefile:111: recipes/tikz] Error 255 (no tiene efecto)

Are you so kindly as to provide me any hint?

Thank You!

Solution

According to the linked Melpa Readme, the following configuration should include enire directory templates into the package:

(tikz :repo "emiliotorres/tikz"
      :fetcher github
      :files ("tikz.el" "templates"))

An alternate approach, that eventually was chosen by the OP, also documented in MELPA Readme:

If your package requires some additional files, but is otherwise fine with the defaults, it's recommended to use the special element :defaults as the very first element of the :files list, which causes the default value shown above to be prepended to the specified file list. For example :files (:defaults "snippets") would cause the "snippets" subdir to be copied in addition to the defaults.

Hence, in the context of the question:

(tikz :repo "emiliotorres/tikz"
      :fetcher github
      :files (:defaults "templates"))