gnu: guile-ssh: Fix test failure due to Guile 3.0.7's 'read-error'.

Reported by Marius Bakke.

* gnu/packages/patches/guile-ssh-read-error.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/ssh.scm (guile-ssh)[source]: Use it.
(guile2.0-ssh)[source]: New field.
(guile2.2-ssh)[source]: New field.

gnu/local.mk

@@ -1174,6 +1174,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/guile-rsvg-pkgconfig.patch		\
   %D%/packages/patches/guile-emacs-fix-configure.patch		\
   %D%/packages/patches/guile-ssh-fix-test-suite.patch		\
+  %D%/packages/patches/guile-ssh-read-error.patch		\
   %D%/packages/patches/gtk2-respect-GUIX_GTK2_PATH.patch	\
   %D%/packages/patches/gtk2-respect-GUIX_GTK2_IM_MODULE_FILE.patch \
   %D%/packages/patches/gtk2-theme-paths.patch			\

gnu/packages/patches/guile-ssh-read-error.patch

@@ -0,0 +1,18 @@
+This patch adjusts to slightly different 'read-error' in Guile 3.0.6
+compared to earlier versions:
+
+  https://github.com/artyom-poptsov/guile-ssh/issues/28
+
+--- a/tests/dist.scm
++++ b/tests/dist.scm
+@@ -183,8 +183,8 @@ Unbound variable: e"
+    rrepl-get-result))
+ 
+ (test-error-with-log/= "rrepl-get-result, unknown # object error"
+-  'node-repl-error "Reader error: scm_lreadr: #<unknown port>:1:3: \
+-Unknown # object: (#\\<): scheme@(guile-user)> \
++  'node-repl-error "Reader error: #f: #<unknown port>:1:3: \
++Unknown # object: (\"#<\"): scheme@(guile-user)> \
+ $4 = #<session #<undefined>@#<undefined>:22 (disconnected) 453fff>"
+   (call-with-input-string
+    (string-append  "scheme@(guile-user)> $4 = "

gnu/packages/ssh.scm

@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2013, 2014 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2014, 2015, 2016 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2015, 2016, 2018, 2019, 2020, 2021 Efraim Flashner <efraim@flashner.co.il>
@@ -317,7 +317,8 @@ (define-public guile-ssh
               (sha256
                (base32
                 "1xpxkvgj7wgcl450djkcrmrf957mcy2f36hfs5g6kpla1gax2d1g"))
-              (patches (search-patches "guile-ssh-fix-test-suite.patch"))))
+              (patches (search-patches "guile-ssh-fix-test-suite.patch"
+                                       "guile-ssh-read-error.patch"))))
     (build-system gnu-build-system)
     (outputs '("out" "debug"))
     (arguments
@@ -383,6 +384,9 @@ (define-public guile2.0-ssh
   (package
     (inherit guile-ssh)
     (name "guile2.0-ssh")
+    (source (origin
+              (inherit (package-source guile-ssh))
+              (patches (search-patches "guile-ssh-fix-test-suite.patch"))))
     (native-inputs
      `(("guile" ,guile-2.0) ;needed when cross-compiling.
        ,@(alist-delete "guile" (package-native-inputs guile-ssh))))
@@ -393,6 +397,9 @@ (define-public guile2.2-ssh
   (package
     (inherit guile-ssh)
     (name "guile2.2-ssh")
+    (source (origin
+              (inherit (package-source guile-ssh))
+              (patches (search-patches "guile-ssh-fix-test-suite.patch"))))
     (native-inputs
      `(("guile" ,guile-2.2) ;needed when cross-compiling.
        ,@(alist-delete "guile" (package-native-inputs guile-ssh))))