Hello, I get the following error when running ``guix --version | head -n 1''. I can get similar after replacing ``--version'' with ``--help''. Also, the error is nondeterministic. Any idea? $ LC_ALL=C guix --version | head -n 1 guix (GNU Guix) 91213c384b62bc422896d39005efa922e4fa75f2 Backtrace: In ice-9/boot-9.scm: 160: 14 [catch #t # ...] In unknown file: ?: 13 [apply-smob/1 #] In ice-9/boot-9.scm: 66: 12 [call-with-prompt prompt0 ...] In ice-9/eval.scm: 432: 11 [eval # #] In ice-9/boot-9.scm: 2404: 10 [save-module-excursion #] 4056: 9 [#] 1727: 8 [%start-stack load-stack ...] 1732: 7 [#] In unknown file: ?: 6 [primitive-load "/usr/local/bin/guix"] In guix/ui.scm: 390: 5 [show-version-and-exit "guix"] In ice-9/format.scm: 1593: 4 [format #t "Copyright ~a 2017 ~a" "(C)" "the Guix authors\n"] 766: 3 [format:format-work "Copyright ~a 2017 ~a" ("(C)" "the Guix authors\n")] 264: 2 [tilde-dispatch] 73: 1 [format:out-obj-padded #f "the Guix authors\n" #f ()] In unknown file: ?: 0 [display "the Guix authors\n" #] ERROR: In procedure display: ERROR: In procedure scm_flush: Broken pipe Backtrace: In ice-9/boot-9.scm: 160: 1 [catch #t # ...] In unknown file: ?: 0 [apply-smob/1 #] ERROR: In procedure apply-smob/1: ERROR: In procedure scm_flush: Broken pipe Cheers, Alex