Re: MYMETA.yml vs. SIGNATURE

I'm going to step *way* back in this discussion.  I've been able to
replicate the issue, which is the first step to finding a thoughtful
resolution:

(1) All prerequisites to actually run the signature test file are
satisfied. (E.g. $ENV{TEST_SIGNATURE}, etc.

(2) MANIFEST.SKIP is in MANIFEST.SKIP and thus not added to MANIFEST
or copied to the distdir (where the signature test is actually run)

(3) ExtUtils::Manifest version prior to 1.58

(4) Run: "perl Build.PL", "./Build disttest"

Thus, two solutions immediately present themselves:

(a) Do *not* skip MANIFEST.SKIP.  This ensures that it winds up in
distdir (including the explicit skip of MYMETA.yml).

(b) Upgrade ExtUtils::Manifest to 1.58 (which includes MYMETA among
the default skip list when no MANIFEST.SKIP exists)

Both solutions work independently.  I recommend doing both of them, on
the off chance that some end user just happens to have set
TEST_SIGNATURE and has a old version of ExtUtils::Manifest.

-- David