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
@@ -31,14 +31,11 @@
 [build-dependencies.cc]
 version = "1.0"
 
-[build-dependencies.openssl-src]
-version = "111.0.1"
-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"

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<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
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<div class='path'>path: <a href='/guix/log/?id=56b39202da93bb68e91f387afd4b359350481a44'>root</a>/<a href='/guix/log/tests?id=56b39202da93bb68e91f387afd4b359350481a44'>tests</a>/<a href='/guix/log/tests/store-roots.scm?id=56b39202da93bb68e91f387afd4b359350481a44'>store-roots.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/tests/store-roots.scm?id=56b39202da93bb68e91f387afd4b359350481a44&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-08-18 16:10:08 +0200'>2023-08-18</span></td><td><a href='/guix/commit/tests/store-roots.scm?id=4b1fdd44ed87dc07d23cc9313a8b6b14d0646923'>tests: store-roots: Remove bogus test.</a><span class='msg-avail'>...<span class='msg-tooltip'>This test was added in 1261ce15233cbf7e24de9959df86a23b46314a28 but it
proved to be bogus: &lt;https://issues.guix.gnu.org/64760&gt;.

* tests/store-roots.scm ("gc-roots, initial"): Remove.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-06-18 23:36:25 +0200'>2023-06-18</span></td><td><a href='/guix/commit/tests/store-roots.scm?id=1261ce15233cbf7e24de9959df86a23b46314a28'>store: Tolerate non-existent GC root directories.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/store/roots.scm (gc-roots): Wrap 'scandir*' call in 'catch'.
* tests/store-roots.scm ("gc-roots, initial"): New test.  Move
'open-connection' call below.
</span></span></td><td>Ludovic Courtès</td></tr>