" prevent default plugins from load
function s:stockless()
    let g:real_rtp = &runtimepath
    set rtp-=$VIMRUNTIME
    if &rtp == g:real_rtp | unlet g:real_rtp | return | endif
    " if Vim goes to source anything else whatsoever, fix &runtimepath first
    augroup Stockless
    autocmd SourcePre * let &runtimepath = remove(g:,'real_rtp') | exe 'autocmd! Stockless' | exe 'augroup! Stockless'
    augroup END
endfunc

call s:stockless()