cannot build: Enforcement failed

[mw66]

$ /usr/bin/dub --version
DUB version 1.23.0, built on Sep 27 2020

$ /usr/bin/dmd --version
DMD64 D Compiler v2.094.0
Copyright (C) 1999-2020 by The D Language Foundation, All Rights Reserved written by Walter Bright

$  /usr/bin/dub build -v
Using dub registry url 'https://code.dlang.org/'
Refreshing local packages (refresh existing: true)...
Looking for local package map at /var/lib/dub/packages/local-packages.json
...
...
No valid package found in current working directory: Enforcement failed
Enforcement failed

[mw66]

https://github.com/AntonMeep/profdump/blob/master/dub.json#L19

				"silly": {"path": "../silly"},

Why this relative path? is it intended?