diff --git a/engine/ibus-engine-table.in b/engine/ibus-engine-table.in
index e79d62a6cad4..675007204abd 100644
--- a/engine/ibus-engine-table.in
+++ b/engine/ibus-engine-table.in
@@ -24,8 +24,6 @@ prefix=@prefix@
 exec_prefix=@prefix@
 datarootdir=@datarootdir@
 datadir=@datadir@
-export IBUS_TABLE_LOCATION=@datarootdir@/ibus-table
-export IBUS_TABLE_LIB_LOCATION=@libexecdir@
 
 # Set this variable to something > 0 to get more debug output.
 # (Debug output may show up in the log file and/or in the lookup table):
diff --git a/engine/ibus-table-createdb.in b/engine/ibus-table-createdb.in
index 91eb28b7cbe5..187dddf2c952 100644
--- a/engine/ibus-table-createdb.in
+++ b/engine/ibus-table-createdb.in
@@ -24,6 +24,4 @@ exec_prefix=@exec_prefix@
 bindir=@bindir@
 datarootdir=@datarootdir@
 datadir=@datadir@
-export IBUS_TABLE_DATA_DIR=@datarootdir@
-export IBUS_TABLE_BIN_PATH=@bindir@
 exec @PYTHON@ @datarootdir@/ibus-table/engine/tabcreatedb.py $@
diff --git a/setup/ibus-setup-table.in b/setup/ibus-setup-table.in
index 7f7405c37296..ae6f96921c56 100644
--- a/setup/ibus-setup-table.in
+++ b/setup/ibus-setup-table.in
@@ -22,9 +22,6 @@
 prefix=@prefix@
 exec_prefix=@exec_prefix@
 datarootdir=@datarootdir@
-export IBUS_PREFIX=@prefix@
-export IBUS_DATAROOTDIR=@datarootdir@
-export IBUS_LOCALEDIR=@localedir@
 cd @prefix@/share/ibus-table/setup/
 exec @PYTHON@ main.py $@
 
'/guix/diff/nix/libutil?id=8da6dfb0bbb00c330bfa053741f5a58b66219463'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/nix/libutil'>
<input type='hidden' name='id' value='8da6dfb0bbb00c330bfa053741f5a58b66219463'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=8da6dfb0bbb00c330bfa053741f5a58b66219463'>root</a>/<a href='/guix/log/nix?id=8da6dfb0bbb00c330bfa053741f5a58b66219463'>nix</a>/<a href='/guix/log/nix/libutil?id=8da6dfb0bbb00c330bfa053741f5a58b66219463'>libutil</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/nix/libutil?id=8da6dfb0bbb00c330bfa053741f5a58b66219463&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-11-19 23:04:19 +0100'>2021-11-19</span></td><td><a href='/guix/commit/nix/libutil?id=24224530d1f4a70808d003ba8dce849b77625b79'>daemon: Micro-optimize 'deletePath'.</a><span class='msg-avail'>...<span class='msg-tooltip'>'remove' calls 'unlink' first and falls back to 'rmdir' upon EISDIR.
This change gets rid of the 'unlink' call for every directory being
removed.

* nix/libutil/util.cc (_deletePath): Call 'unlink' or 'rmdir' depending
on 'st.st_mode', rather than call 'remove'.
</span></span></td><td>Ludovic Courtès</td></tr>