diff --git a/doc/talks/.envrc b/doc/talks/.envrc
new file mode 100644
index 00000000..4a4726a5
--- /dev/null
+++ b/doc/talks/.envrc
@@ -0,0 +1 @@
+use_nix
diff --git a/doc/talks/2023-01-18-tocatta/assets/aerogramme_components1.drawio.pdf b/doc/talks/2023-01-18-tocatta/assets/aerogramme_components1.drawio.pdf
new file mode 100644
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diff --git a/doc/talks/2023-01-18-tocatta/assets/aerogramme_components2.drawio.pdf b/doc/talks/2023-01-18-tocatta/assets/aerogramme_components2.drawio.pdf
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index 00000000..87e42eed
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diff --git a/doc/talks/2023-01-18-tocatta/assets/aerogramme_datatype.drawio.pdf b/doc/talks/2023-01-18-tocatta/assets/aerogramme_datatype.drawio.pdf
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diff --git a/doc/talks/2023-01-18-tocatta/assets/aerogramme_keys.drawio.pdf b/doc/talks/2023-01-18-tocatta/assets/aerogramme_keys.drawio.pdf
new file mode 100644
index 00000000..8fea81c7
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diff --git a/doc/talks/2023-01-18-tocatta/assets/garage.drawio.pdf b/doc/talks/2023-01-18-tocatta/assets/garage.drawio.pdf
new file mode 100644
index 00000000..a54a163c
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diff --git a/doc/talks/2023-01-18-tocatta/assets/garage.drawio.png b/doc/talks/2023-01-18-tocatta/assets/garage.drawio.png
new file mode 100644
index 00000000..386dd862
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diff --git a/doc/talks/2023-01-18-tocatta/talk.pdf b/doc/talks/2023-01-18-tocatta/talk.pdf
index c3265542..97966061 100644
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diff --git a/doc/talks/2023-01-18-tocatta/talk.tex b/doc/talks/2023-01-18-tocatta/talk.tex
index 7fad6065..43399d8e 100644
--- a/doc/talks/2023-01-18-tocatta/talk.tex
+++ b/doc/talks/2023-01-18-tocatta/talk.tex
@@ -266,6 +266,13 @@
 
 \end{frame}
 
+\begin{frame}
+	\frametitle{Garage's architecture}
+	\begin{center}
+		\includegraphics[width=.35\linewidth]{assets/garage.drawio.pdf}
+	\end{center}
+\end{frame}
+
 \begin{frame}
 	\frametitle{Two big problems}
 	\begin{enumerate}
diff --git a/doc/talks/shell.nix b/doc/talks/shell.nix
new file mode 100644
index 00000000..161a61e1
--- /dev/null
+++ b/doc/talks/shell.nix
@@ -0,0 +1,12 @@
+{ pkgs ? import <nixpkgs> { } }:
+let
+  latex = (pkgs.texlive.combine {
+    inherit (pkgs.texlive)
+    scheme-basic 
+    beamer amsmath mathtools breqn
+    environ 
+    multirow graphics import adjustbox tabu vwcol stmaryrd ulem ragged2e
+    dvisvgm dvipng wrapfig hyperref capt-of;
+  });
+in pkgs.mkShell { nativeBuildInputs = [ pkgs.gnumake latex ]; }
+