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-rw-r--r--build-aux/hydra/evaluate.scm9
-rw-r--r--build-aux/hydra/gnu-system.scm2
2 files changed, 9 insertions, 2 deletions
diff --git a/build-aux/hydra/evaluate.scm b/build-aux/hydra/evaluate.scm
index ab10253f31..cc6a4b9492 100644
--- a/build-aux/hydra/evaluate.scm
+++ b/build-aux/hydra/evaluate.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2016 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2016, 2017 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -32,6 +32,13 @@
     (beautify-user-module! m)
     m))
 
+(cond-expand
+  (guile-2.2
+   ;; Guile 2.2.2 has a bug whereby 'time-monotonic' objects have seconds and
+   ;; nanoseconds swapped (fixed in Guile commit 886ac3e).  Work around it.
+   (define time-monotonic time-tai))
+  (else #t))
+
 (define (call-with-time thunk kont)
   "Call THUNK and pass KONT the elapsed time followed by THUNK's return
 values."
diff --git a/build-aux/hydra/gnu-system.scm b/build-aux/hydra/gnu-system.scm
index 507c6abe0e..b1faa2265a 100644
--- a/build-aux/hydra/gnu-system.scm
+++ b/build-aux/hydra/gnu-system.scm
@@ -111,7 +111,7 @@ SYSTEM."
   ;; chain.)
   (list gcc-4.8 gcc-4.9 gcc-5 glibc binutils
         gmp mpfr mpc coreutils findutils diffutils patch sed grep
-        gawk gnu-gettext hello guile-2.0 zlib gzip xz
+        gawk gnu-gettext hello guile-2.0 guile-2.2 zlib gzip xz
         %bootstrap-binaries-tarball
         %binutils-bootstrap-tarball
         (%glibc-bootstrap-tarball)