From d2d8f005877468e49a9f4254ee96912ee2344a4a Mon Sep 17 00:00:00 2001
From: Tristan Van Berkom <tristan.vanberkom@codethink.co.uk>
Date: Tue, 13 Oct 2015 18:24:55 +0900
Subject: Configuring GDM

This commit configures GDM, not perfectly but at least in a way
that it works.

We've now:
  o Enabled installation of the xsession file
  o Enable X
  o Install basic LFS style PAM configuration
  o Create the gdm user properly in the system integration hook
  o Added some post-install-commands to tweak the PAM configuration

Change-Id: I668de58734a5d5db8bcb57ae157d212bc3c9598b
---
 strata/gnome.morph     |  2 +-
 strata/gnome/gdm.morph | 19 ++++++++++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/strata/gnome.morph b/strata/gnome.morph
index 4b2aee14..a7f2a059 100644
--- a/strata/gnome.morph
+++ b/strata/gnome.morph
@@ -389,7 +389,7 @@ chunks:
   morph: strata/gnome/gdm.morph
   repo: upstream:gdm
   ref: 494ec8cee5727c37118994d3864c44f36aa454fc
-  unpetrify-ref: master
+  unpetrify-ref: 3.18.0
   build-depends:
   - polkit
   - accountsservice
diff --git a/strata/gnome/gdm.morph b/strata/gnome/gdm.morph
index cd5e37e9..342b70d2 100644
--- a/strata/gnome/gdm.morph
+++ b/strata/gnome/gdm.morph
@@ -2,4 +2,21 @@ name: gdm
 kind: chunk
 build-system: autotools
 configure-commands:
-- ./autogen.sh --prefix="$PREFIX" --sysconfdir=/etc --with-plymouth=no
+- |
+  # GDM includes a few stock PAM configurations, we choose the LFS flavor
+  # because of it's simplicity over the others, also it does not require
+  # selinux modules, however we neet to tweak the config a little after install.
+  ./autogen.sh --prefix="$PREFIX" --sysconfdir=/etc --localstatedir=/var \
+               --with-selinux=no --with-plymouth=no \
+               --enable-gdm-xsession --with-x --with-default-pam-config=lfs
+post-install-commands:
+# Instead of following LFS PAM config to the letter, we redirect the includes
+# to use the systemd installed all purpose 'system-auth' file
+- sed -i 's/system-account/system-auth/g'  "$DESTDIR"/etc/pam.d/gdm*
+- sed -i 's/system-password/system-auth/g' "$DESTDIR"/etc/pam.d/gdm*
+- sed -i 's/system-session/system-auth/g'  "$DESTDIR"/etc/pam.d/gdm*
+system-integration:
+  gdm-misc:
+    00-add-gdm-user:
+    - groupadd -g 21 gdm
+    - useradd -c "GDM Daemon Owner" -d /var/lib/gdm -u 21  -g gdm -s /bin/false gdm
-- 
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