ShEx validation error: ShapeLabel not found Start

[despens]

Dear rudof team,

I think I have a very basic problem understanding how rudof handles shape labels, which prevents me from even starting a ShEx validation process. 😅 Apparently I'm not defining the shape label properly, although I believe I followed all the examples I could find. If anybody could help me I'd be grateful.

I'm running rudof from the terminal like this:

$ rudof shex-validate -s artwork.shex -m artwork.map 2025-07-22.ttl
Error: ShEx validation error: ShapeLabel not found Start: Label not found: Start

artwork.shex looks like this:

prefix wdt: <https://artbase.rhizome.org/prop/direct/>
prefix wd: <https://artbase.rhizome.org/entity/>

Start = <Artwork>

<Artwork> {
  wdt:P3 [wd:Q5] ;
}

artwork.map contents:

<https://artbase.rhizome.org/entity/Q2508>@Start

The file 2025-07-22.ttl is a data dump.

In the infamous ShEx2 Simple Online Validator I can use the following shape maps, which seem to work fine:

• wd:Q2508@<Artwork>
• <https://artbase.rhizome.org/entity/Q2508>@start

I'd be more than happy to accommodate an implementation detail in rudof to define shape maps, if you could tell me what I could change to make it work.

[despens]

OK friends, only a few hours after posting this message of course I found the solution. 😅

rudof asks for IRIs when using shape labels in the form <full_iri> or prefix:label.

I changed the ShEx file artwork.shex to

prefix wdt: <https://artbase.rhizome.org/prop/direct/>
prefix wd: <https://artbase.rhizome.org/entity/>
prefix s: <http://localhost/shex/>

s:Artwork {
  wdt:P3 [wd:Q5] ;
}

and artwork.map to

<https://artbase.rhizome.org/entity/Q2508>@s:Artwork

Nice!