This was submitted upstream
https://github.com/openbios/openbios/pull/12

diff --git a/config/scripts/switch-arch b/config/scripts/switch-arch
index b5acc6c..a96ef4b 100755
--- a/config/scripts/switch-arch
+++ b/config/scripts/switch-arch
@@ -38,7 +38,8 @@ longbits()
     if test "$cpu" = "sparc64" -o "$cpu" = "ia64" \
         -o "$cpu" = "amd64" -o "$cpu" = "x86_64" \
         -o "$cpu" = "powerpc64" -o "$cpu" = "ppc64" \
-        -o "$cpu" = "ppc64le" -o "$cpu" = "alpha" ; then
+        -o "$cpu" = "ppc64le" -o "$cpu" = "alpha" \
+        -o "$cpu" = "aarch64" -o "$cpu" = "riscv64" ; then
         echo 64
     else
         echo 32
17aa15de4'/><select name='h' onchange='this.form.submit();'>
<option value='koszko' selected='selected'>koszko</option>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
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<div class='path'>path: <a href='/guix/log/?id=0be51fe03bf2b8f3ef009929fa0860e17aa15de4'>root</a>/<a href='/guix/log/gnu?id=0be51fe03bf2b8f3ef009929fa0860e17aa15de4'>gnu</a>/<a href='/guix/log/gnu/packages?id=0be51fe03bf2b8f3ef009929fa0860e17aa15de4'>packages</a>/<a href='/guix/log/gnu/packages/gtk.scm?id=0be51fe03bf2b8f3ef009929fa0860e17aa15de4'>gtk.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/gtk.scm?id=0be51fe03bf2b8f3ef009929fa0860e17aa15de4&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-07-30 02:00:00 +0200'>2023-07-30</span></td><td><a href='/guix/commit/gnu/packages/gtk.scm?id=bbdf1488cd91d1588bcf5fbf6b40fa6bf0b9e46d'>gnu: cairomm: Update to 1.16.2.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/gtk.scm (cairomm): Update to 1.16.2.
[source]: Hard-code NAME.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-07-20 10:11:36 +0200'>2023-07-20</span></td><td><a href='/guix/commit/gnu/packages/gtk.scm?id=825a7be4316d27f8f34b0cbfa4970e1886a40e29'>gnu: pango: Support build for the Hurd.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/gtk.scm (pango)[native-inputs]: Do not include
gobject-introspection when building for the Hurd.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-07-20 10:11:36 +0200'>2023-07-20</span></td><td><a href='/guix/commit/gnu/packages/gtk.scm?id=dd3f9a7a49616cd2db9a0cc2d4640aebde2664ef'>gnu: harfbuzz: Support build for the Hurd.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/gtk.scm (harfbuzz)[native-inputs]: Do not include
gobject-introspection when building for the Hurd.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-07-20 10:11:34 +0200'>2023-07-20</span></td><td><a href='/guix/commit/gnu/packages/gtk.scm?id=69142dbea4eb5148ed165b494cae0ad730bf5514'>gnu: cairo: Support building for the Hurd.</a><span class='msg-avail'>...<span class='msg-tooltip'>Gobject-introspection and libdrm does not build for the Hurd.  Poppler depends
on nss, which does not build for the Hurd.

* gnu/packages/gtk.scm (cairo)[native-inputs]: When building for the Hurd, do
not include gobject-introspection.
[inputs]: Likewise, do not include libdrm, poppler.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-07-16 02:00:02 +0200'>2023-07-16</span></td><td><a href='/guix/commit/gnu/packages/gtk.scm?id=d40b71069f304bd5cc685ce89b24532317733687'>gnu: spread-sheet-widget: Omit static library.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/gtk.scm (spread-sheet-widget)[arguments]:
Add "--disable-static" to #:configure-flags.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-07-16 02:00:02 +0200'>2023-07-16</span></td><td><a href='/guix/commit/gnu/packages/gtk.scm?id=514d68b48fe2ebe96754b97e26951fd93ae1e656'>gnu: spread-sheet-widget: Update to 0.8.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/gtk.scm (spread-sheet-widget): Update to 0.8.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-07-17 09:05:03 +0100'>2023-07-17</span></td><td><a href='/guix/commit/gnu/packages/gtk.scm?id=728ed83188846453f1319ea425847da8200a55a9'>gnu: Remove harfbuzz-5.</a><span class='msg-avail'>...<span class='msg-tooltip'>As this package definition is redundant, harfbuzz is version 5.3.1.

* gnu/packages/gtk.scm (harfbuzz-5): Remove.
* gnu/packages/libreoffice.scm (libreoffice)[inputs]: Replace harfbuzz-5 with
harfbuzz.
* gnu/packages/qt.scm (qtwebengine)[inputs]: Remove redundant replace.
</span></span></td><td>Christopher Baines</td></tr>
<tr><td><span title='2023-05-07 19:29:20 +0300'>2023-05-07</span></td><td><a href='/guix/commit/gnu/packages/gtk.scm?id=e18a0e97a1b71d0c627b809d5d2f6bcb2dba41d7'>gnu: gdk-pixbuf: Adjust skipped failing tests.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/gtk.scm (gdk-pixbuf)[arguments]: In 'disable-failing-tests
phase skip a different test.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2023-05-03 11:39:59 +0300'>2023-05-03</span></td><td><a href='/guix/commit/gnu/packages/gtk.scm?id=a60ca78823ba737b541f5b59b47925a848bb7dd5'>gnu: gtksourceview: Update to 5.8.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/gtk.scm (gtksourceview): Update to 5.8.0.
</span></span></td><td>Efraim Flashner</td></tr>