from https://patch-diff.githubusercontent.com/raw/RubyCrypto/x25519/pull/36.patch

From 5886507e08488c0ed116b1979a073b78b9495683 Mon Sep 17 00:00:00 2001
From: Eric Long <i@hack3r.moe>
Date: Sat, 15 Apr 2023 02:58:26 +0800
Subject: [PATCH] Add automatic fallback for non-x86_64 targets

---
 Rakefile                          | 2 +-
 ext/x25519_precomputed/extconf.rb | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/Rakefile b/Rakefile
index 535697c..6e4f4d3 100644
--- a/Rakefile
+++ b/Rakefile
@@ -7,7 +7,7 @@ CLEAN.include("**/*.o", "**/*.so", "**/*.bundle", "pkg", "tmp")
 
 require "rake/extensiontask"
 %w[precomputed ref10].each do |provider|
-  next if provider == "precomputed" && RUBY_PLATFORM =~ /arm64-darwin/
+  next if provider == "precomputed" && RUBY_PLATFORM !~ /x86_64|x64/
 
   Rake::ExtensionTask.new("x25519_#{provider}") do |ext|
     ext.ext_dir = "ext/x25519_#{provider}"
diff --git a/ext/x25519_precomputed/extconf.rb b/ext/x25519_precomputed/extconf.rb
index 7f2ba4d..b049f98 100644
--- a/ext/x25519_precomputed/extconf.rb
+++ b/ext/x25519_precomputed/extconf.rb
@@ -4,12 +4,12 @@
 
 require "mkmf"
 
-if RUBY_PLATFORM =~ /arm64-darwin|aarch64-linux/
-  File.write("Makefile", "install clean: ;")
-else
+if RUBY_PLATFORM =~ /x86_64|x64/
   $CFLAGS << " -Wall -O3 -pedantic -std=c99 -mbmi -mbmi2 -march=haswell"
 
   create_makefile "x25519_precomputed"
+else
+  File.write("Makefile", "install clean: ;")
 end
 
 # rubocop:enable Style/GlobalVars
lass='form'><form class='right' method='get' action='/guix/log/gnu/services/science.scm'>
<input type='hidden' name='id' value='18d02443e1ec37779ee3cf63f9aaff1746bfdd8e'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=18d02443e1ec37779ee3cf63f9aaff1746bfdd8e'>root</a>/<a href='/guix/log/gnu?id=18d02443e1ec37779ee3cf63f9aaff1746bfdd8e'>gnu</a>/<a href='/guix/log/gnu/services?id=18d02443e1ec37779ee3cf63f9aaff1746bfdd8e'>services</a>/<a href='/guix/log/gnu/services/science.scm?id=18d02443e1ec37779ee3cf63f9aaff1746bfdd8e'>science.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/services/science.scm?id=18d02443e1ec37779ee3cf63f9aaff1746bfdd8e&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-11-30 01:08:55 +0100'>2021-11-30</span></td><td><a href='/guix/commit/gnu/services/science.scm?id=892f1b7273d57b25940700877a02618fe826cc08'>services: Accept &lt;inferior-package&gt;s in lieu of &lt;package&gt;s.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/authentication.scm (fprintd-configuration)
(nslcd-configuration): Substitute file-like objects for package ones.
* gnu/services/cgit.scm (cgit-configuration, opaque-cgit-configuration):
Likewise.
* gnu/services/cups.scm (package-list?, cups-configuration): Likewise.
* gnu/services/dns.scm (verify-knot-configuration)
(ddclient-configuration): Likewise.
* gnu/services/docker.scm (docker-configuration): Likewise.
* gnu/services/file-sharing.scm (transmission-daemon-configuration): Likewise.
* gnu/services/getmail.scm (getmail-configuration): Likewise.
* gnu/services/mail.scm (dovecot-configuration)
(opaque-dovecot-configuration): Likewise.
* gnu/services/messaging.scm (prosody-configuration)
(opaque-prosody-configuration): Likewise.
* gnu/services/monitoring.scm (zabbix-server-configuration)
(zabbix-agent-configuration): Likewise.
* gnu/services/networking.scm (opendht-configuration): Likewise.
* gnu/services/pm.scm (tlp-configuration): Likewise.
* gnu/services/telephony.scm (jami-configuration): Likewise.
* gnu/services/virtualization.scm (libvirt-configuration)
(qemu-guest-agent-configuration): Likewise.
* gnu/services/vpn.scm (openvpn-client-configuration): Likewise.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>