termux-packages/packages/boinc/_autosetup.patch

--- a/_autosetup
+++ b/_autosetup
@@ -19,7 +19,7 @@
 check_version()
 {
     dir=`pwd`
-    cd /tmp
+    cd "${TMPDIR:-/tmp}"
     foundit=
     ## get current version of $1
     desired=`echo $2 | awk -F. '{print $1*100+$2}'`