Expected Behavior

dune-package is OK

Actual Behavior

It is in wrong format

dune build src
File "/home/kakadu/.opam/4.10.0+fp+flambda/lib/GT/dune-package", line 3, characters 1-8:
3 | (version 8f75697-dirty)
     ^^^^^^^
Error: Unknown field version

Reproduction

1. Install a package with META.PACKAGENAME.tempalte present
2. Compile something that depends on your package

Workaround:

install:
	dune build @install
	dune install
	echo "(lang dune 2.7)" > `ocamlfind query PACKAGENAME`/dune-package
	echo "(use_meta)" >> `ocamlfind query PACKAGENAME`/dune-package
	dune describe --only-packages=PACKAGENAME >> `ocamlfind query PACKAGENAME`/dune-package

I discussed that yesterday with @rgrinberg

P.S. OK, maybe workaround is not actually a valid workaround.