gnu: retroarch: Disable the on-line updater.

Addresses <http://issues.guix.gnu.org/issue/38360>.

* gnu/packages/emulators.scm (retroarch)[source]: Add patch and snippet.
* packages/patches/retroarch-disable-online-updater.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu/local.mk

@@ -1329,6 +1329,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/rpcbind-CVE-2017-8779.patch		\
   %D%/packages/patches/rtags-separate-rct.patch			\
   %D%/packages/patches/racket-store-checksum-override.patch	\
+  %D%/packages/patches/retroarch-disable-online-updater.patch	\
   %D%/packages/patches/ruby-rubygems-276-for-ruby24.patch	\
   %D%/packages/patches/ruby-rack-ignore-failing-test.patch      \
   %D%/packages/patches/ruby-safe-yaml-add-require-time.patch	\

gnu/packages/emulators.scm

@@ -1062,7 +1062,18 @@ emulation community.  It provides highly accurate emulation.")
              (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
-        (base32 "0y7rcpz7psf8k3agsrq277jdm651vbnn9xpqvmj2in1a786idya7"))))
+        (base32 "0y7rcpz7psf8k3agsrq277jdm651vbnn9xpqvmj2in1a786idya7"))
+       (patches
+        (search-patches "retroarch-disable-online-updater.patch"))
+       (modules '((guix build utils)))
+       (snippet
+        '(begin
+           ;; Don't suggest using the Online Updater if available: it never
+           ;; is.  This disables translation of this particular message.
+           (substitute* (find-files "menu/drivers" "\\.c$")
+             (("msg_hash_to_str\\(MSG_MISSING_ASSETS\\)")
+              "\"Warning: Missing assets, go get some\""))
+           #t))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f                      ; no tests
@@ -1074,7 +1085,7 @@ emulation community.  It provides highly accurate emulation.")
                     (etc (string-append out "/etc"))
                     (vulkan (assoc-ref inputs "vulkan-loader"))
                     (wayland-protocols (assoc-ref inputs "wayland-protocols")))
-               ;; Hard-code the path to libvulkan.so.
+               ;; Hard-code some store file names.
                (substitute* "gfx/common/vulkan_common.c"
                  (("libvulkan.so") (string-append vulkan "/lib/libvulkan.so")))
                (substitute* "gfx/common/wayland/generate_wayland_protos.sh"
@@ -1082,10 +1093,12 @@ emulation community.  It provides highly accurate emulation.")
                  (string-append wayland-protocols "/share/wayland-protocols")))
                (substitute* "qb/qb.libs.sh"
                  (("/bin/true") (which "true")))
+
                ;; Use shared zlib.
                (substitute* '("libretro-common/file/archive_file_zlib.c"
                               "libretro-common/streams/trans_stream_zlib.c")
                  (("<compat/zlib.h>") "<zlib.h>"))
+
                ;; The configure script does not yet accept the extra arguments
                ;; (like ‘CONFIG_SHELL=’) passed by the default configure phase.
                (invoke

gnu/packages/patches/retroarch-disable-online-updater.patch

@@ -0,0 +1,41 @@
+From: Tobias Geerinckx-Rice <me@tobias.gr>
+Date: Fri, 29 Nov 2019 20:32:54 +0100
+Subject: [PATCH]: gnu: retroarch: Disable the on-line updater.
+
+This disables the entire ‘Online Updater’ sub-menu to address
+<http://issues.guix.gnu.org/issue/38360>.  Perhaps that is more than is
+necessary.
+
+diff -Naur a/menu/menu_displaylist.c b/menu/menu_displaylist.c
+--- a/menu/menu_displaylist.c	1970-01-01 01:00:01.000000000 +0100
++++ b/menu/menu_displaylist.c	2019-11-29 18:35:27.467948854 +0100
+@@ -8444,11 +8444,6 @@
+                      MENU_ENUM_LABEL_NETPLAY,
+                      PARSE_ACTION, false) == 0)
+                   count++;
+-            if (settings->bools.menu_show_online_updater)
+-               if (menu_displaylist_parse_settings_enum(info->list,
+-                     MENU_ENUM_LABEL_ONLINE_UPDATER,
+-                     PARSE_ACTION, false) == 0)
+-                  count++;
+             if (menu_displaylist_parse_settings_enum(info->list,
+                   MENU_ENUM_LABEL_SETTINGS, PARSE_ACTION, false) == 0)
+                count++;
+diff -Naur retroarch.a/menu/menu_setting.c retroarch.c/menu/menu_setting.c
+--- a/menu/menu_setting.c	1970-01-01 01:00:01.000000000 +0100
++++ b/menu/menu_setting.c	2019-11-29 18:35:35.753957312 +0100
+@@ -7291,14 +7291,6 @@
+                &group_info,
+                &subgroup_info,
+                parent_group);
+-
+-         CONFIG_ACTION(
+-               list, list_info,
+-               MENU_ENUM_LABEL_ONLINE_UPDATER,
+-               MENU_ENUM_LABEL_VALUE_ONLINE_UPDATER,
+-               &group_info,
+-               &subgroup_info,
+-               parent_group);
+ #endif
+ 
+          CONFIG_ACTION(