[bug#63942,1/5] gnu: guile-fibers: Add 1.3.1.

diff --git a/gnu/local.mk b/gnu/local.mk
index f9afb433e6..f466f91746 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1317,6 +1317,7 @@  dist_patch_DATA =						\
   %D%/packages/patches/guile-fibers-epoll-instance-is-dead.patch \
   %D%/packages/patches/guile-fibers-fd-finalizer-leak.patch	\
   %D%/packages/patches/guile-fibers-wait-for-io-readiness.patch \
+  %D%/packages/patches/guile-fibers-libevent-32-bit.patch	\
   %D%/packages/patches/guile-fix-invalid-unicode-handling.patch \
   %D%/packages/patches/guile-gdbm-ffi-support-gdbm-1.14.patch	\
   %D%/packages/patches/guile-git-adjust-for-libgit2-1.2.0.patch \
diff --git a/gnu/packages/guile-xyz.scm b/gnu/packages/guile-xyz.scm
index d8684bb818..43334eea0c 100644
--- a/gnu/packages/guile-xyz.scm
+++ b/gnu/packages/guile-xyz.scm
@@ -92,6 +92,7 @@  (define-module (gnu packages guile-xyz)
   #:use-module (gnu packages hurd)
   #:use-module (gnu packages image)
   #:use-module (gnu packages imagemagick)
+  #:use-module (gnu packages libevent)
   #:use-module (gnu packages libffi)
   #:use-module (gnu packages libunistring)
   #:use-module (gnu packages linux)
@@ -788,10 +789,10 @@  (define-public guile2.2-dsv
     (inputs (list guile-2.2))
     (propagated-inputs `(("guile-lib" ,guile2.2-lib)))))
 
-(define-public guile-fibers-1.1
+(define-public guile-fibers-1.3
   (package
     (name "guile-fibers")
-    (version "1.1.1")
+    (version "1.3.1")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -800,11 +801,9 @@  (define-public guile-fibers-1.1
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "0ll63d7202clapg1k4bilbnlmfa4qvpjnsd7chbkka4kxf5klilc"))
+                "0wvdi4l58f9a5c9wi3cdc9l1bniscsixb6w2zj86mch7j7j814lc"))
               (patches
-               (search-patches "guile-fibers-wait-for-io-readiness.patch"
-                               "guile-fibers-epoll-instance-is-dead.patch"
-                               "guile-fibers-fd-finalizer-leak.patch"))))
+               (search-patches "guile-fibers-libevent-32-bit.patch"))))
     (build-system gnu-build-system)
     (arguments
      (list #:make-flags
@@ -822,17 +821,15 @@  (define-public guile-fibers-1.1
                      (substitute* "Makefile"
                        (("tests/speedup.scm") ""))))))))
     (native-inputs
-     (list texinfo pkg-config autoconf automake libtool
+     (list texinfo pkg-config autoconf-2.71 automake libtool
            guile-3.0            ;for 'guild compile
            ;; Gettext brings 'AC_LIB_LINKFLAGS_FROM_LIBS'
            gettext-minimal))
     (inputs
-     (list guile-3.0))                            ;for libguile-3.0.so
-    (supported-systems
-     ;; This version requires 'epoll' and is thus limited to Linux-based
-     ;; systems, but this may change soon:
-     ;; <https://github.com/wingo/fibers/pull/53>.
-     (filter (cut string-suffix? "-linux" <>) %supported-systems))
+     (append (list guile-3.0)                     ;for libguile-3.0.so
+             (if (hurd-target?)
+                 (list libevent)
+                 '())))
     (synopsis "Lightweight concurrency facility for Guile")
     (description
      "Fibers is a Guile library that implements a a lightweight concurrency
@@ -849,6 +846,36 @@  (define-public guile-fibers-1.1
     (properties '((upstream-name . "fibers")))
     (license license:lgpl3+)))
 
+(define-public guile-fibers-1.1
+  (package
+    (inherit guile-fibers-1.3)
+    (version "1.1.1")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/wingo/fibers")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name "guile-fibers" version))
+              (sha256
+               (base32
+                "0ll63d7202clapg1k4bilbnlmfa4qvpjnsd7chbkka4kxf5klilc"))
+              (patches
+               (search-patches "guile-fibers-wait-for-io-readiness.patch"
+                               "guile-fibers-epoll-instance-is-dead.patch"
+                               "guile-fibers-fd-finalizer-leak.patch"))))
+    (native-inputs
+     (list texinfo pkg-config autoconf automake libtool
+           guile-3.0            ;for 'guild compile
+           ;; Gettext brings 'AC_LIB_LINKFLAGS_FROM_LIBS'
+           gettext-minimal))
+    (inputs
+     (list guile-3.0))                            ;for libguile-3.0.so
+    (supported-systems
+     ;; This version requires 'epoll' and is thus limited to Linux-based
+     ;; systems, which is fixed in 1.2.0:
+     ;; <https://github.com/wingo/fibers/pull/53>.
+     (filter (cut string-suffix? "-linux" <>) %supported-systems))))
+
 (define-public guile-fibers-next
   (let ((commit "99fc3e38048f732de67c43fde52e949fa294aa7d")
         (revision "1"))
diff --git a/gnu/packages/patches/guile-fibers-libevent-32-bit.patch b/gnu/packages/patches/guile-fibers-libevent-32-bit.patch
new file mode 100644
index 0000000000..a1cc99fdbe
--- /dev/null
+++ b/gnu/packages/patches/guile-fibers-libevent-32-bit.patch
@@ -0,0 +1,18 @@ 
+This fixes a bug with the libevent backend on 32-bit platforms:
+
+  https://github.com/wingo/fibers/issues/86
+
+diff --git a/extensions/libevent.c b/extensions/libevent.c
+index 4f44de9..52c9d73 100644
+--- a/extensions/libevent.c
++++ b/extensions/libevent.c
+@@ -215,7 +215,8 @@ run_event_loop (void *p)
+     microsec = -1;
+   else if (data->timeout >= 0)
+     {
+-      microsec = data->timeout / time_units_per_microsec;
++      microsec = (time_units_per_microsec == 0)
++	? 0 : data->timeout / time_units_per_microsec;
+       tv.tv_sec = 0;
+       tv.tv_usec = microsec;
+     }