Jan Nieuwenhuizen writes: I have been building quite some versions of Guile the past week. There re a couple of .go files that keep giving me problems wrt nondeterminism: web/server/http.go (define *timer* (gettimeofday)) seemed suspect, but seems harmless. rnrs/arithmetic/fixnums.go make-implementation-restriction-violation seemed suspect, but commenting it out does not seem to help. After commenting out all of http.scm and fixnums.scm, yesterday I had 3 Guix builds on two machines (GuixSD and one Ubuntu+Guix) that were bit-identical, but one build showed differences in system/repl/commands.go Apparently most of the time this file builds deterministicly, but some times it does not!? Ideas? In the mean time, one more obviously correct and trivial patch attatched that removes a build time stamp. Greetings, Jan