Remove warning about empty packages pre 3.0 #5120
Merged
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The testsuite is broken following #4867. Also, I didn't noticed but some tests ended being updated in a way that they didn't test what they were originally testing.
I tried to update tests but it was a pain so I removed the warning pre 3.0 and also set
allow_empty
totrue
for packages defined by an opam file rather than a package stanza. This makes the behaviour more conservative.However, we still need a cram test for #4867.