diff --git a/figures/tree_packages.pdf b/figures/tree_packages.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..db0e213f29f8079134bcfb2ab6161e49814f40ac
Binary files /dev/null and b/figures/tree_packages.pdf differ
diff --git a/figures/tree_packages.svg b/figures/tree_packages.svg
new file mode 100644
index 0000000000000000000000000000000000000000..af7477f4ef94b51ec66d8a4e68cf05dfcddec1ed
--- /dev/null
+++ b/figures/tree_packages.svg
@@ -0,0 +1,108 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+ xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
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+ version="1.1"
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+ inkscape:version="0.92.4 (5da689c313, 2019-01-14)"
+ sodipodi:docname="tree_packages.svg">
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+ inkscape:window-height="1080"
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+ inkscape:window-y="0"
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+ id="metadata5">
+ <rdf:RDF>
+ <cc:Work
+ rdf:about="">
+ <dc:format>image/svg+xml</dc:format>
+ <dc:type
+ rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+ <dc:title></dc:title>
+ </cc:Work>
+ </rdf:RDF>
+ </metadata>
+ <g
+ inkscape:label="Calque 1"
+ inkscape:groupmode="layer"
+ id="layer1"
+ transform="translate(-24.184568,-64.106371)">
+ <text
+ xml:space="preserve"
+ style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:11.34286404px;line-height:1.25;font-family:'Arial Black';-inkscape-font-specification:'Arial Black, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:start;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
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+ style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:11.34286404px;line-height:1.25;font-family:monospace;-inkscape-font-specification:monospace;font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:start;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
+ x="24.184568"
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+ id="text4584"><tspan
+ sodipodi:role="line"
+ id="tspan4582"
+ x="24.184568"
+ y="72.724289"
+ style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-family:monospace;-inkscape-font-specification:monospace;stroke-width:0.26458332">/nix/store</tspan><tspan
+ sodipodi:role="line"
+ x="24.184568"
+ y="86.90287"
+ style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-family:monospace;-inkscape-font-specification:monospace;stroke-width:0.26458332"
+ id="tspan4586">└── hash-packagename</tspan><tspan
+ sodipodi:role="line"
+ x="24.184568"
+ y="101.08145"
+ style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-family:monospace;-inkscape-font-specification:monospace;stroke-width:0.26458332"
+ id="tspan4588"> ├── bin</tspan><tspan
+ sodipodi:role="line"
+ x="24.184568"
+ y="115.26003"
+ style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-family:monospace;-inkscape-font-specification:monospace;stroke-width:0.26458332"
+ id="tspan4590"> │ └── packagename</tspan><tspan
+ sodipodi:role="line"
+ x="24.184568"
+ y="129.43861"
+ style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-family:monospace;-inkscape-font-specification:monospace;stroke-width:0.26458332"
+ id="tspan4592"> └── lib</tspan><tspan
+ sodipodi:role="line"
+ x="24.184568"
+ y="143.61719"
+ style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-family:monospace;-inkscape-font-specification:monospace;stroke-width:0.26458332"
+ id="tspan4594"> └── libpackagename.so</tspan></text>
+ </g>
+</svg>
diff --git a/slides.tex b/slides.tex
index 3a5f5d11eac24a6a4b2d05396e764fc0f80cb374..c1802463c7c6b93346d13db0fa5ee21c4e0700fc 100644
--- a/slides.tex
+++ b/slides.tex
@@ -223,7 +223,7 @@ stdenv.mkDerivation {
\end{itemize}
\center
- \includegraphics[width=0.7\textwidth]{./figures/example_tree.png}
+ \includegraphics[width=0.6\textwidth]{./figures/tree_packages.pdf}
\end{frame}
@@ -233,7 +233,7 @@ stdenv.mkDerivation {
\begin{column}{0.5\textwidth}
\begin{tcolorbox}[colframe=black,colback=gray!10,coltext=black]
- Packages depends on other packages
+ Packages depend on other packages
\end{tcolorbox}
\end{column}