From 5d65a136d0784d0d8786fba04d4f331ad1afc434 Mon Sep 17 00:00:00 2001
From: David McKinney <mckinney@subgraph.com>
Date: Fri, 10 Jul 2020 12:15:13 -0400
Subject: [PATCH] realmfs-builder: optimize realm build size by removing
 docs/locales during pkg install

---
 realmfs-builder/common.inc                    |  4 +--
 .../realmfs-modules/delete-dpkg-cfg-nodocs    |  4 +++
 .../realmfs-modules/write-apt-preferences     | 26 +++++++++++++++++++
 .../realmfs-modules/write-dpkg-cfg-nodocs     | 10 +++++++
 4 files changed, 42 insertions(+), 2 deletions(-)
 create mode 100644 realmfs-builder/realmfs-modules/delete-dpkg-cfg-nodocs
 create mode 100644 realmfs-builder/realmfs-modules/write-apt-preferences
 create mode 100644 realmfs-builder/realmfs-modules/write-dpkg-cfg-nodocs

diff --git a/realmfs-builder/common.inc b/realmfs-builder/common.inc
index 817f1f0..765ee43 100644
--- a/realmfs-builder/common.inc
+++ b/realmfs-builder/common.inc
@@ -4,9 +4,9 @@
 
 BASE_PACKAGES="iproute2 less xz-utils sudo dbus libpam-systemd openssh-client packagekit-gtk3-module libcanberra-gtk3-module libpulse0 fonts-roboto-hinted bash-completion"
 
-BASE_PRE_INSTALL_MODULES="utility-library configure-locale create-user set-hostname no-install-recommends write-apt-sources"
+BASE_PRE_INSTALL_MODULES="utility-library configure-locale create-user set-hostname no-install-recommends write-dpkg-cfg-nodocs write-apt-preferences write-apt-sources"
 
-BASE_POST_INSTALL_MODULES="loginctl-enable-linger configure-systemd install-configure-host0 install-launch-script setup-theme-symlinks apt-cacher-ng add-xsettings-schema"
+BASE_POST_INSTALL_MODULES="loginctl-enable-linger configure-systemd install-configure-host0 install-launch-script setup-theme-symlinks apt-cacher-ng add-xsettings-schema delete-dpkg-cfg-nodocs"
 
 trap "exit 1" TERM
 export TOP_PID=$$
diff --git a/realmfs-builder/realmfs-modules/delete-dpkg-cfg-nodocs b/realmfs-builder/realmfs-modules/delete-dpkg-cfg-nodocs
new file mode 100644
index 0000000..84ad4f1
--- /dev/null
+++ b/realmfs-builder/realmfs-modules/delete-dpkg-cfg-nodocs
@@ -0,0 +1,4 @@
+# 01_nodocs is deleted post install so that users are able to install docs in the realm after the build
+info "Deleting /etc/dpkg/dpkg.cfg.d/01_nodocs"
+
+rm /etc/dpkg/dpkg.cfg.d/01_nodocs
diff --git a/realmfs-builder/realmfs-modules/write-apt-preferences b/realmfs-builder/realmfs-modules/write-apt-preferences
new file mode 100644
index 0000000..e3831dd
--- /dev/null
+++ b/realmfs-builder/realmfs-modules/write-apt-preferences
@@ -0,0 +1,26 @@
+info "Writing /etc/apt/preferences"
+
+{
+	echo 'Package: *'
+	echo 'Pin: release a=stable'
+	echo 'Pin-Priority: 1000'
+
+	echo 'Package: *'
+	echo 'Pin: release a=unstable'
+	echo 'Pin-Priority: 2'
+	echo 'Package: firefox'
+	echo 'Pin: release a=unstable'
+	echo 'Pin-Priority: 1001'
+
+	echo 'Package: libfontconfig1'
+	echo 'Pin: release a=unstable'
+	echo 'Pin-Priority: 1001'
+
+	echo 'Package: fontconfig-config'
+	echo 'Pin: release a=unstable'
+	echo 'Pin-Priority: 1001'
+
+	echo 'Package: libnss3'
+	echo 'Pin: release a=unstable'
+	echo 'Pin-Priority: 1001'
+} > /etc/apt/preferences
diff --git a/realmfs-builder/realmfs-modules/write-dpkg-cfg-nodocs b/realmfs-builder/realmfs-modules/write-dpkg-cfg-nodocs
new file mode 100644
index 0000000..269931d
--- /dev/null
+++ b/realmfs-builder/realmfs-modules/write-dpkg-cfg-nodocs
@@ -0,0 +1,10 @@
+# This will prevent installation of docs/locales, it will be reverse in the post-install stage to let users install docs/locales in their realms
+info "Writing /etc/dpkg/dpkg.cfg.d/01_nodocs"
+
+{
+   echo 'path-exclude=/usr/share/locale/*'
+   echo 'path-exclude=/usr/share/man/*'
+   echo 'path-exclude=/usr/share/doc/*'
+   echo 'path-include=/usr/share/doc/*/copyright'
+
+} > /etc/dpkg/dpkg.cfg.d/01_nodocs