How do I limit the amount of RAM that WINE sees?

I'm not sure if this will work, but I found a script here that limits the memory of a process.

The script is as follows:

#!/bin/sh

set -eu

if [ "$#" -lt 2 ]
then
        echo Usage: `basename $0` "<limit> <command>..."
        exit 1
fi

limit="$1"
shift

cgname="limitmem_$$"
echo "limiting memory to $limit (cgroup $cgname) for command $@" >&2

cgm create memory "$cgname" >/dev/null
cgm setvalue memory "$cgname" memory.limit_in_bytes "$limit" >/dev/null
# try also limiting swap usage, but this fails if the system has no swap
cgm setvalue memory "$cgname" memory.memsw.limit_in_bytes "$limit" >/dev/null 2>&1 || true
bytes_limit=`cgm getvalue memory "$cgname" memory.limit_in_bytes | tail -1 | cut -f2 -d\"`

# spawn subshell to run in the cgroup
# set +e so a failing child does not prevent us from removing the cgroup
set +e
(
set -e
cgm movepid memory "$cgname" `sh -c 'echo $PPID'` > /dev/null
exec "$@"
)

# grab exit code 
exitcode=`echo $?`

set -e

peak_mem=`cgm getvalue memory "$cgname" memory.max_usage_in_bytes | tail -1 | cut -f2 -d\"`
failcount=`cgm getvalue memory "$cgname" memory.failcnt | tail -1 | cut -f2 -d\"`
percent=`expr "$peak_mem" / \( "$bytes_limit" / 100 \)`
echo "peak memory used: $peak_mem ($percent%); exceeded limit $failcount times" >&2

cgm remove memory "$cgname" >/dev/null

exit $exitcode

You'll have to install cgmanager (sudo apt-get install cgmanager), but it's little more than half of a megabyte.

It's possible WINE (or the executable) will detect all the RAM you have, despite the limit, in which case this will most likely fail. If that happens, you can always delete the script and then uninstall cgmanager with a quick sudo apt-get autoremove --purge cgmanager.