Perl-Toolchain-Gang/Module-Build — comment on commit 886abd6b50511cc3183162817cae0fdfa18f060f
File:  line 0
By dagolden:

Also... mst said he would expect:

.modulebuildrc supplied info
PERL_MB_OPT supplied info
things I passed when calling Build.PL
things I passed when calling ./Build action_name

It's never going to be quite that because .modulebuildrc can affect any action -- the implication of which is that it should supersede other prior defaults. So it's probably two-stage at best:

# during Build.PL
.modulebuildrc supplied info
PERL_MB_OPT supplied info
things I passed when calling Build.PL

# during ./Build action_name
merged results of calling Build.PL
.modulebuildrc supplied info for action_name
things I passed when calling ./Build action_name