Reported as <https://github.com/sgimenez/laby/pull/68>

diff --git a/build b/build
index 992a9e3..0df74d9 100755
--- a/build
+++ b/build
@@ -7,7 +7,6 @@ source build.conf || exit 1
 
 export PREFIX=${PREFIX-/usr}
 export DATADIR=${DATADIR-${PREFIX}/share}
-export TMPDIR=${TMPDIR-/tmp}
 
 export PROJECT_NAME=${PROJECT_NAME-unknown}
 export PROJECT_VERSION=${PROJECT_VERSION-unknown}
diff --git a/src/config.sh b/src/config.sh
index 19d4160..9338aad 100644
--- a/src/config.sh
+++ b/src/config.sh
@@ -29,5 +29,4 @@ let build_ocaml = "${OCAML_VERSION}"
 let build_lablgtk = "${BUILD_LABLGTK}"
 let build_lablgtk_sourceview = "${BUILD_LABLGTKSV}"
 let _ = Res.sys_data_dir := "${DATADIR}"
-let _ = Res.sys_tmp_dir := "${TMPDIR}"
 EOF
diff --git a/src/laby.ml b/src/laby.ml
index b77f2b2..e17acb9 100644
--- a/src/laby.ml
+++ b/src/laby.ml
@@ -48,6 +48,7 @@ let opts =
 
 let _ =
   Printexc.record_backtrace true;
+  Res.sys_tmp_dir := Filename.get_temp_dir_name ();
   Run.init
     ~name:Config.project_name
     ~conf:(conf, ["conf"])
-- 
2.34.1

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<div class='path'>path: <a href='/guix/log/?id=8485178e34910987de5dc347e26574499bb37dd1'>root</a>/<a href='/guix/log/gnu?id=8485178e34910987de5dc347e26574499bb37dd1'>gnu</a>/<a href='/guix/log/gnu/tests?id=8485178e34910987de5dc347e26574499bb37dd1'>tests</a>/<a href='/guix/log/gnu/tests/ssh.scm?id=8485178e34910987de5dc347e26574499bb37dd1'>ssh.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/tests/ssh.scm?id=8485178e34910987de5dc347e26574499bb37dd1&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-05-22 21:56:40 +0200'>2022-05-22</span></td><td><a href='/guix/commit/gnu/tests/ssh.scm?id=d2b3400f79ffaed3357650307376ab69a7ec3b1b'>services: openssh: Listen on both IPv4 and IPv6.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-04-07 00:08:56 +0200'>2022-04-07</span></td><td><a href='/guix/commit/gnu/tests/ssh.scm?id=808b9e850491c7b1d867a5f1f4d5ee6f61f345d4'>services: openssh: Start as an inetd service.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-09-26 23:20:56 +0200'>2021-09-26</span></td><td><a href='/guix/commit/gnu/tests/ssh.scm?id=89b05442933d92f4b21c3294455a498e8333727d'>tests: Reduce boilerplate for users of 'system-test-runner'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-09-25 18:52:05 +0200'>2021-09-25</span></td><td><a href='/guix/commit/gnu/tests/ssh.scm?id=1fb75128a5202b406622da6272bc809c46d1f439'>tests: Adjust to SRFI-64 as found in Guile 3.0.7.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-04-21 16:33:21 +0200'>2020-04-21</span></td><td><a href='/guix/commit/gnu/tests/ssh.scm?id=a295a1ca2942794ac52321a639128f94be595ac5'>tests: ssh: Explicitly wait for port 22.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>