Seeing it was mizzling, the lallycooler inkslinger decided to stay in and have resurrection pie for his nooning.

Let’s dissect:

Mizzling – drizzling rain (1891 American Slang Dictionary by James Maitland)

Lallycooler – one who is pre-eminently successful in his line (daisy, dandy, darling, lullu) (1891 American Slang Dictionary by James Maitland)

Inkslinger – a writer or editor (1891 American Slang Dictionary by James Maitland)

Resurrection pie – a pie made of scraps or leavings (1891 American Slang Dictionary by James Maitland)

Nooning – an interval for rest and refreshment at midday, as in the harvest field (1891 American Slang Dictionary by James Maitland)

So, in other words:  Since it was lightly raining, the preeminent writer decided to stay in and have remixed left-overs for his afternoon refreshment.