On core-updates commit 736939037346, libetonyek fails its test suite
like this:

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********* Start testing of KCatalogTest *********
Config: Using QtTest library 5.15.10, Qt 5.15.10 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 11.4.0), unknown unknown
PASS   : KCatalogTest::initTestCase()
QWARN  : KCatalogTest::testLookup() kf.i18n: The value of the LANGUAGE environment variable: "fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH:fr_CH" ( size: 95 ),
 was longer than (and consequently truncated to) the max. length of: 54
FAIL!  : KCatalogTest::testLookup() Compared values are not the same
   Actual   (c.name())                          : "New Zealand"
   Expected (QStringLiteral("Nouvelle-Zélande")): "Nouvelle-Z\u00E9lande"
   Loc: [/tmp/guix-build-ki18n-5.114.0.drv-0/ki18n-5.114.0/autotests/kcatalogtest.cpp(40)]
PASS   : KCatalogTest::cleanupTestCase()
Totals: 2 passed, 1 failed, 0 skipped, 0 blacklisted, 8ms 
********* Finished testing of KCatalogTest *********
<end of output>
Test time =   0.02 sec 
----------------------------------------------------------
Test Failed.
"kcatalogtest" end time: Jul 10 14:55 UTC 
"kcatalogtest" time elapsed: 00:00:00
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It expects the value "New Zealand", but instead receives
"Nouvelle-Z\u00E9lande".

And there is a warning about the LANGUAGE environment variable.

I tried updating to the latest Git revision, with the attached diff, but
the build fails when libtoolize can't be found in the bootstrap phase,
although it is available in the build environment:

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starting phase `bootstrap'
running './autogen.sh'
patch-shebang: ./autogen.sh: changing `/bin/sh' to `/gnu/store/3jhfhxdf6v5ms10x5zmnl166dh3yhbr1-bash-minimal-5.1.16/bin/sh'
error: libtoolize not found
error: in phase 'bootstrap': uncaught exception:
%exception #<&invoke-error program: "./autogen.sh" arguments: () exit-status: 1 term-signal: #f stop-signal: #f> 
phase `bootstrap' failed after 0.2 seconds
command "./autogen.sh" failed with status 1
build process 6 exited with status 256
note: keeping build directory `/tmp/guix-build-libetonyek-0.1.10-0.9c3a8cb.drv-3'
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Any ideas?