; let (dynamic_prefix, static_suffix) = spanTail is_static xs'
; if opt_SimpleListLiterals -- -fsimple-list-literals
|| not (dopt Opt_EnableRewriteRules dflags) -- Rewrite rules off
; let (dynamic_prefix, static_suffix) = spanTail is_static xs'
; if opt_SimpleListLiterals -- -fsimple-list-literals
|| not (dopt Opt_EnableRewriteRules dflags) -- Rewrite rules off