Issue #20687 has been updated by nobu (Nobuyoshi Nakada). In that case, the system ruby is used to re-check encoding sources and update encdb.h if needed. Encodings under enc directory will be added to encdb.h automatically by template/encdb.h.tmpl file. We assume that the cost to re-check using ruby is much less than the cost for rebuild all encodings, or the cost to re-check using other than ruby. Another assumption is that the system ruby provides full of bundled libraries, ArchLinux is not the case apparently. I'll add a check that the system ruby matches our assumption. ---------------------------------------- Bug #20687: Does tarball require baseruby? https://bugs.ruby-lang.org/issues/20687#change-109476 * Author: hsbt (Hiroshi SHIBATA) * Status: Open * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- From https://github.com/rbenv/ruby-build/issues/2435 I'm wondering why tarball use system ruby with above environment. In my understanding, tarball don't need baseruby. Is it intentional? -- https://bugs.ruby-lang.org/