$there =~ s#/+[^/]+$## or
fail "import $dscfn requires ../$f, but it does not exist";
$there .= "/$f";
+ my $test = $there =~ m{^/} ? $there : "../$there";
+ stat $test or fail "import $dscfn requires $test, but: $!";
symlink $there, $here or fail "symlink $there to $here: $!";
progress "made symlink $here -> $there";
# print STDERR Dumper($fi);