https://sources.debian.org/data/main/r/rust-openssl-sys/0.9.53-1/debian/patches/disable-vendor.patch
"MIT" licensed according to debian/copyright file
slightly modified to only change the vendored openssl-src dependency

Starting from rust-openssl-sys@0.9.69 Cargo.toml starts searching for openssl-3.0.

--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,15 +31,12 @@
 [build-dependencies.cc]
 version = "1.0"
 
-[build-dependencies.openssl-src]
-version = "111"
-optional = true
-
 [build-dependencies.pkg-config]
 version = "0.3.9"
 
 [features]
 vendored = ["openssl-src"]
+openssl-src = []
 
 [target."cfg(target_env = \"msvc\")".build-dependencies.vcpkg]
 version = "0.2.8"

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<div class='path'>path: <a href='/guix/log/?id=9d21c67d7be282d21ae887320b4f46892601d0bb'>root</a>/<a href='/guix/log/etc?id=9d21c67d7be282d21ae887320b4f46892601d0bb'>etc</a>/<a href='/guix/log/etc/guix-daemon.service.in?id=9d21c67d7be282d21ae887320b4f46892601d0bb'>guix-daemon.service.in</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/etc/guix-daemon.service.in?id=9d21c67d7be282d21ae887320b4f46892601d0bb&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-07-07 23:54:20 -0400'>2021-07-07</span></td><td><a href='/guix/commit/etc/guix-daemon.service.in?id=4cbe0127a668cbcc64087c5d311308b59d39b104'>guix-install.sh: Prompt for configuring substitutes discovery.</a><span class='msg-avail'>...<span class='msg-tooltip'>Also ensure prompt_yes_no always print the message with a trailing space,
which is more pleasing to the eye.

* etc/guix-daemon.conf.in &lt;--discover=no&gt;: New guix-daemon option.
* etc/guix-daemon.service.in: Likewise.
* etc/init.d/guix-daemon.in: Likewise.
* etc/openrc/guix-daemon.in: Likewise.
* etc/guix-install.sh (configure_substitute_discovery): New procedure.
(sys_enable_guix_daemon): Ask the user whether automatic substitute discovery
should be enabled.  Set the '--discover' argument accordingly.
(prompt_yes_no): Add a trailing space to the message.
(sys_authorize_build_farms): Remove trailing space from the message argument.
* NEWS (Distribution): Add news.
</span></span></td><td>Maxim Cournoyer</td></tr>