[BUG] Bad error message when toplevel package.json5 is missing

[me-minus]

eden.tar.gz

Building this little project fails with an unhelpfull error message.
Adding a simple project.json5 in the eden directory makes the build work.

dds Output

~/program/eden$ ../eden2/dds/_build/dds --log_level debug build -t :clang-10
[debug] Opening package database [/home/minus/.local/share/dds/pkgs.db]
[warning] Dependency version ranges are deprecated. All are treated as same-major-version. (Parsing dependency 'neo-fun^0.5.5')
[debug] Scanning for sources in /home/minus/program/eden/libs/mousetail
[debug] Found 2 source files
[debug] Scanning for sources in /home/minus/program/eden/libs/gardenia
[debug] Found 1 source files
[debug] Generating an archive library for /mousetail
[debug] Library /gardenia has no compiled inputs, so no archive will be generated
[error] Cannot find non-existent usage requirements for 'eden/mousetail'
[error] 
A `uses` or `links` field for a library specifies a library of an unknown name.
Check your spelling, and check that the package containing the library is
available, either from the `package.json5` or from the `INDEX.lmi` that was used
for the build.

[error] Refer: https://vector-of-bool.github.io/docs/dds/err/unknown-usage.html

Desktop (please complete the following information):

• Operating System: Linux Ubuntu 21.04
• Compiler: Clang
• dds Version: devel: 8de0085