I would like to do a check like
if system($(uname -m | sed 's/x86_//;s/i[3-6]86/32/') == 64
Plug 'valloric/youcompleteme', { 'do': './install.py --all' }
else
Plug 'valloric/youcompleteme', { 'do': './install.py --clang-complete --system-libclang --omnisharp-completer --gocode-completer --tern-completer --racer-completer' }
endif
has('num64')
.