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-rw-r--r--doc/todo/depend_on_concurrent-output.mdwn4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/todo/depend_on_concurrent-output.mdwn b/doc/todo/depend_on_concurrent-output.mdwn
index cf985166..fdc66b04 100644
--- a/doc/todo/depend_on_concurrent-output.mdwn
+++ b/doc/todo/depend_on_concurrent-output.mdwn
@@ -3,4 +3,8 @@ should be converted to a dependency.
Waiting on concurrent-output reaching Debian stable.
+Once this is done, can switch GHC-Options back to -O0 from -O.
+-O is only needed to get stream fusion in the concurrent-output code;
+-O0 is better because ghc takes less memory to build propellor.
+
[[!tag user/joey]]