Hey,

I tried doing the check for reproducibility
$ ./pre-inst-env guix build --rounds=3 snap-aligner
but it only built once.

$ ./pre-inst-env guix build --check snap-aligner
;;; note: source file /home/ben/git/guix/gnu/packages/bioinformatics.scm
;;;       newer than compiled 
/home/ben/git/guix/gnu/packages/bioinformatics.go
guix build: error: build failed: unsupported build mode

Did I mess that up?

Thanks,
ben