* A test to verify that Nix executes build jobs in parallel, if

possible.

  This test fails right now because this hasn't been implemented right
  now.  Yes, I'm doing Test-Driven Development! ;-)

tests/parallel.builder.sh

@@ -0,0 +1,32 @@
+echo "DOING $text"
+
+
+export PATH=/bin:/usr/bin:$PATH
+
+
+# increase counter
+while ! ln -s x $shared.lock; do
+    sleep 1
+done
+test -f $shared.cur || echo 0 > $shared.cur
+test -f $shared.max || echo 0 > $shared.max
+new=$(($(cat $shared.cur) + 1))
+if test $new -gt $(cat $shared.max); then
+    echo $new > $shared.max
+fi
+echo $new > $shared.cur
+rm $shared.lock
+
+
+echo -n $(cat $inputs)$text > $out
+
+sleep 3
+
+
+# decrease counter
+while ! ln -s x $shared.lock; do
+    sleep 1
+done
+test -f $shared.cur || echo 0 > $shared.cur
+echo $(($(cat $shared.cur) - 1)) > $shared.cur
+rm $shared.lock