From eda67bfdbe42b0d3d714ac290dabe0dfbfeaa917 Mon Sep 17 00:00:00 2001
From: Vincent Ambo <mail@tazj.in>
Date: Sat, 2 Sep 2023 17:22:17 +0300
Subject: feat(tazjin/tvix-eval-2023): add link collection blog post & QR code

Makes it possible for people in the audience to get to the link
collection reasonably quickly.

Later on that post can also have the talk itself added. For now it is
unlisted.

Change-Id: If9ae1d88d3c6f22bbd70b2b3cbea0b0d42895a93
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9208
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: Mark Shevchenko <markshevchenko@gmail.com>
Tested-by: BuildkiteCI
---
 users/tazjin/presentations/tvix-eval-2023/default.nix      | 12 +++++++++++-
 users/tazjin/presentations/tvix-eval-2023/presentation.tex | 13 +++----------
 2 files changed, 14 insertions(+), 11 deletions(-)

(limited to 'users/tazjin/presentations')

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}
-- 
cgit 1.4.1