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=ca7e310f7ac32354b2e693e9a0f783320952a8fc'>root</a>/<a href='/guix/log/gnu?id=ca7e310f7ac32354b2e693e9a0f783320952a8fc'>gnu</a>/<a href='/guix/log/gnu/packages?id=ca7e310f7ac32354b2e693e9a0f783320952a8fc'>packages</a>/<a href='/guix/log/gnu/packages/patches?id=ca7e310f7ac32354b2e693e9a0f783320952a8fc'>patches</a>/<a href='/guix/log/gnu/packages/patches/glibc-bootstrap-system.patch?id=ca7e310f7ac32354b2e693e9a0f783320952a8fc'>glibc-bootstrap-system.patch</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/packages/patches/glibc-bootstrap-system.patch?id=ca7e310f7ac32354b2e693e9a0f783320952a8fc&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-07-29 22:34:57 +0200'>2021-07-29</span></td><td><a href='/guix/commit/gnu/packages/patches/glibc-bootstrap-system.patch?id=b029be2ee0f81cdcbc14240ff426408085ab0a40'>Merge branch 'master' into core-updates-frozen</a><span class='msg-avail'>...<span class='msg-tooltip'> Conflicts:
	gnu/packages/bioinformatics.scm
	gnu/packages/cmake.scm
	gnu/packages/curl.scm
	gnu/packages/emacs-xyz.scm
	gnu/packages/gpodder.scm
	gnu/packages/music.scm
	gnu/packages/patches/glibc-bootstrap-system.patch
	gnu/packages/python-xyz.scm
	gnu/packages/shells.scm
	gnu/packages/statistics.scm
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-07-28 16:05:31 +0300'>2021-07-28</span></td><td><a href='/guix/commit/gnu/packages/patches/glibc-bootstrap-system.patch?id=7d93b21ab1c132990054372a9677c1639d54e631'>gnu: glibc-for-bootstrap: Update patch.</a><span class='msg-avail'>...<span class='msg-tooltip'>There was/is something funny going on with the bootstrap glibc. The
symbol for posix_spawnp points to getopt_r. Which in turn leads to a
lot of crashed in tests later on. I extended the glibc-bootstrap patch
to work around this bug.

* gnu/packages/patches/glibc-bootstrap-system.patch: Adjust patch to
work correctly with new architectures.

Signed-off-by: Efraim Flashner &lt;efraim@flashner.co.il&gt;
</span></span></td><td>Franz Josef</td></tr>