Dear PDL devs,

The top-level Makefile.PL supports using "$ENV{HOME}/.perldl.conf" to load 
config, if it exists. Naturally, that can’t work on Win32 because $ENV{HOME} is 
not normally defined.

The problem I perceive here is that especially on Win32, one needs to define 
various *_INC etc in order for PDL to find the funky locations one is forced to 
place various libraries like Proj4. Requiring people to keep downloading PDL 
and editing its perldl.conf is a recipe for errors, like the ones Rob saw 
recently. My vision is that you’ll be able to do “cpanm PDL”, and it will just 
work in finding your local config, including on Win32.

Therefore, I propose that a Win32-compatible equivalent of this be baked into 
PDL proper. One possibility is using “$ENV{USERPROFILE}/.perldl.conf” for this? 
On my machine that is set as “C:\Users\Ed”, and I wouldn’t mind placing a 
“.perldl.conf” there. What do people think?

Best regards,
Ed
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