Out of memory building lang/ghc-8.8.3

[Christoph Moench-Tegeder]

## andrew clarke (mail at ozzmosis.com):

> Beware anyone building lang/ghc-8.8.3 from the ports tree. Building it
> here on FreeBSD 12.1-REL AMD64 with Poudriere, the build ran out of swap,
> despite the PC having 8 GB RAM, 8 GB swap and not much else running.

I believe they sell phones with that amount of RAM these days, but
they don't run ZFS on that phone as it's a "resource-constrained
environment".

ghc may eat quite some RAM (>2GB per process are not unheard of),
you might have better luck if you don't use these:

> USE_TMPFS=yes
> ALLOW_MAKE_JOBS=yes
> PARALLEL_JOBS=8

tmpfs uses your already scarce memory, and ALLOW_MAKE_JOBS will almost
certainly run multiple ghc processes at the same time (it does so here).

Regards,
Christoph

-- 
Spare Space