8.4.1 ghci findings

Evan Laforge qdunkan at gmail.com
Fri Mar 23 00:20:05 UTC 2018

I just filed this bug:

#14963: ghci -fdefer-type-errors can't run IO action from another module


It seems like -fdefer-type-errors and ghci just don't get along at all now.

But on the good news side, ghci reloading a changed module in 8.4.1 is
much much faster than 8.0.2.  I don't know who did that, but good
work!  Reload being instant instead of having to wait a second or so
makes a big difference.

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