Correct usage of "appstreamcli validate-tree"

[Ingo Klöcker]

On Dienstag, 25. Februar 2025 19:38:51 Mitteleuropäische Normalzeit Michal 
Vašut wrote:
> Hello, I have file structure like this
> 
> tree data/org.file.krita/
> data/org.file.krita/
> ├── file-krita.py
> └── org.file.krita.metainfo.xml
> 
> when I do
> 
> appstreamcli validate-tree data/org.file.krita
> 
> (even if I add slash (/) at the end), it always returns
> 
> I: ~:~: dir-no-metadata-found
> 
> What am I doing wrong?

You are doing nothing wrong (except that you trying to use a tool for a task 
that it's not meant to be used for). I think the documentation is giving wrong 
expectations:
       validate-tree DIRECTORY
           Validate AppStream XML metadata found in a file-tree.

Using strace I see that `appstreamcli validate-tree data/org.file.krita` looks 
at the following two folders (which don't exist) and at nothing else:
data/org.file.krita/usr/share/metainfo
data/org.file.krita/share/metainfo

It seems that validate-tree is meant to be used on installed AppStream XML 
metadata, e.g. the file tree prepared for an AppImage as .../AppDir/usr/share/
metainfo, but not on arbitrary folder hierarchies containing AppStream files.

Regards,
Ingo
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