From d23422d04a032177b70aa4e3c8f88e2c4e4ad94e Mon Sep 17 00:00:00 2001
From: Nicolas Alvarez <nicolas.alvarez@gmail.com>
Date: Sun, 1 Nov 2020 16:41:29 +0000
Subject: [PATCH] gitlab-ci: use eatmydata in apt-get

apt-get uses several fsync() calls on each package it installs, and that's
very slow, especially on non-SSD. eatmydata turns fsync into no-op, which
makes package installation much faster (it can cause corruption if there's
power loss or similar, but that doesn't matter in CI where we throw away
the whole container anyway).

Currently the build_ubuntu_20_04 job in GitLab CI takes 8-9 minutes to
install dependencies. Using eatmydata it went down to 2 minutes.
---
 .gitlab-ci.yml | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f8b7d996a..c0ac4c755 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,8 +13,9 @@ build_ubuntu_20_04:
   before_script:
     - sed -i -e 's/# deb-src/deb-src/g' /etc/apt/sources.list
     - apt-get update
-    - apt-get build-dep --yes --no-install-recommends okular
-    - apt-get install --yes --no-install-recommends ninja-build
+    - apt-get install --yes eatmydata
+    - eatmydata apt-get build-dep --yes --no-install-recommends okular
+    - eatmydata apt-get install --yes --no-install-recommends ninja-build
   script:
     - mkdir -p build && cd build
     - cmake -DOKULAR_UI=desktop -G Ninja ..
@@ -31,8 +32,9 @@ build_clazy_clang_tidy:
   before_script:
     - echo 'deb-src http://deb.debian.org/debian unstable main' >> /etc/apt/sources.list
     - apt-get update
-    - apt-get build-dep --yes --no-install-recommends okular
-    - apt-get install --yes --no-install-recommends ninja-build clazy clang clang-tidy libkf5crash-dev libkf5purpose-dev libegl-dev jq
+    - apt-get install --yes eatmydata
+    - eatmydata apt-get build-dep --yes --no-install-recommends okular
+    - eatmydata apt-get install --yes --no-install-recommends ninja-build clazy clang clang-tidy libkf5crash-dev libkf5purpose-dev libegl-dev jq
 
   script:
     - srcdir=`pwd` && mkdir -p /tmp/okular_build && cd /tmp/okular_build && CC=clang CXX=clazy CXXFLAGS="-Werror -Wno-deprecated-declarations" cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -G Ninja $srcdir && cat compile_commands.json | jq  '[.[] | select(.file | contains("'"$srcdir"'"))]' > compile_commands.aux.json && cat compile_commands.aux.json | jq  '[.[] | select(.file | contains("/synctex/")| not)]' > compile_commands.json && cp "$srcdir/.clang-tidy" .