diff --git a/devlog/2019-12-14.md b/devlog/2019-12-14.md
index 112e3a5..9624a8a 100644
--- a/devlog/2019-12-14.md
+++ b/devlog/2019-12-14.md
@@ -15,3 +15,17 @@ I’ll likely spend a lot of time hunting down the right API; I just
 hope that it even exists.
 
 ## Review
+
+Time worked: 1h30m
+
+I got the basics of reading from Carp and writing to Carp working.
+`OSProcess` turned out not to be what I need, instead I’m now using
+a library called `OSSubProcess` that has a way more powerful API and
+better documentation.
+
+Sadly `OSSubProcess` requires me to close the `stdin` stream after the
+first chunk of writing to it. I’m not sure whether I can reopen the
+stream, it seems not to work. I filed [an issue on Github](https://github.com/pharo-contributions/OSSubprocess/issues/51),
+but I suspect that this is actually not really fixable/not a use
+case that they want to support. We will see. I gave up getting more
+done for today.