+ENVIRONMENT
+ "PERL_TEST_LEANER_USES_TEST_MORE"
+ If this environment variable is set, Test::Leaner will replace its
+ functions by those from Test::More. Moreover, the symbols that are
+ imported you "use Test::Leaner" will be those from Test::More, but you
+ can still only import the symbols originally defined in Test::Leaner
+ (hence the functions from Test::More that are not implemented in
+ Test::Leaner will not be imported). If your version of Test::More is too
+ old and doesn't have some symbols (like "note" or "done_testing"), they
+ will be replaced in Test::Leaner by croaking stubs.
+
+ This may be useful if your Test::Leaner-based test script fails and you
+ want extra diagnostics.