2 files changed, 14 insertions, 11 deletions
diff --git a/users/tazjin/presentations/tvix-eval-2023/default.nix b/users/tazjin/presentations/tvix-eval-2023/default.nix
index 6b3076895097..ce831556de89 100644
--- a/users/tazjin/presentations/tvix-eval-2023/default.nix
+++ b/users/tazjin/presentations/tvix-eval-2023/default.nix
@@ -1,7 +1,7 @@
 { depot, pkgs, ... }:
 
 let
-  inherit (pkgs) fontconfig texlive stdenv imagemagick;
+  inherit (pkgs) fontconfig texlive stdenv imagemagick runCommand qrencode;
 
   tex = texlive.combine {
     inherit (texlive)
@@ -22,6 +22,15 @@ let
       translator;
   };
 
+  linksQrCode = runCommand "qrcode.png" { } ''
+    ${qrencode}/bin/qrencode -o code.png -s 8 \
+      --background=fafafa \
+      --foreground=000000 \
+      'https://tazj.in/blog/tvix-eval-talk-2023'
+
+    # latex has trouble with the PDF produced by qrencode
+    ${imagemagick}/bin/convert code.png $out
+  '';
 in
 stdenv.mkDerivation {
   name = "progmsk-tvix-eval";
@@ -40,6 +49,7 @@ stdenv.mkDerivation {
 
     # webp images can't be included directly, need to convert to PNG
     convert ${depot.tvix.website}/tvix-logo.webp tvix-logo.png
+    cp ${linksQrCode} qrcode.png
 
     # As usual, TeX needs to be run twice ...
     ${tex}/bin/xelatex presentation.tex
diff --git a/users/tazjin/presentations/tvix-eval-2023/presentation.tex b/users/tazjin/presentations/tvix-eval-2023/presentation.tex
index 3eb1658036df..5cb8cd506500 100644
--- a/users/tazjin/presentations/tvix-eval-2023/presentation.tex
+++ b/users/tazjin/presentations/tvix-eval-2023/presentation.tex
@@ -138,17 +138,10 @@
   \end{frame}
 
   \begin{frame}{Спасибо!}
-    Ссылки:
-    \begin{itemize}
-    \item tvix.dev
-    \item tvl.fyi
-    \item tvixbolt.tvl.su
-    \end{itemize}
-
-    % TODO: QR code or something for these links
-
-    \vspace{3cm}
     \begin{center}
+      \includegraphics[width=6cm,keepaspectratio=true]{qrcode.png}
+
+      https://tazj.in/blog/tvix-eval-talk-2023 \\
       t.me/tazjin | tazjin@tvl.su
     \end{center}
   \end{frame}