[feature] Avoid uploading metadata when not required

[uilianries]

What is your suggestion?

The current documentation about metadata feature says:

By default, conan upload will upload recipes and packages metadata when a recipe or a package is uploaded to the server.
....
If the metadata has been locally modified or added new files, we can force the upload explicitly with ... The --metadata argument allows to specify the metadata files that we are uploading.

It's quite clear that metadata folder is uploaded when I have a content stored in my metadata folder.

However, let's say I have to use a recipe that packages metadata, but I don't want to upload it. (e.g the company has a common recipe, and I have a my own repository in the company's Artifactory).

The documentation is not clear about this case, but I have 2 options:

• Delete the metadata folder in my disk, before executing conan upload command.
• Pass a fake folder name to the metadata argument, like conan upload --metadata=None

It would be great if Conan could provide an official way to do that:

conan upload --metadata=""

Where the empty string "" indicates: Do not upload metadata, even if I have it cached in my machine.

Have you read the CONTRIBUTING guide?

• I've read the CONTRIBUTING guide