uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/desktops/pantheon/desktop/elementary-greeter/default.nix

@@ -0,0 +1,130 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, nix-update-script
+, linkFarm
+, substituteAll
+, elementary-greeter
+, pkg-config
+, meson
+, ninja
+, vala
+, desktop-file-utils
+, gtk3
+, granite
+, libgee
+, libhandy
+, gnome-settings-daemon
+, mutter
+, elementary-icon-theme
+, wingpanel-with-indicators
+, elementary-gtk-theme
+, nixos-artwork
+, lightdm
+, gdk-pixbuf
+, clutter-gtk
+, dbus
+, accountsservice
+, wrapGAppsHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "elementary-greeter";
+  version = "6.1.0";
+
+  src = fetchFromGitHub {
+    owner = "elementary";
+    repo = "greeter";
+    rev = version;
+    sha256 = "sha256-CY+dPSyQ/ovSdI80uEipDdnWy1KjbZnwpn9sd8HrbPQ=";
+  };
+
+  patches = [
+    ./sysconfdir-install.patch
+    # Needed until https://github.com/elementary/greeter/issues/360 is fixed
+    (substituteAll {
+      src = ./hardcode-fallback-background.patch;
+      default_wallpaper = "${nixos-artwork.wallpapers.simple-dark-gray.gnomeFilePath}";
+    })
+  ];
+
+  nativeBuildInputs = [
+    desktop-file-utils
+    meson
+    ninja
+    pkg-config
+    vala
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    accountsservice
+    clutter-gtk # else we get could not generate cargs for mutter-clutter-2
+    elementary-icon-theme
+    gnome-settings-daemon
+    gdk-pixbuf
+    granite
+    gtk3
+    libgee
+    libhandy
+    lightdm
+    mutter
+  ];
+
+  mesonFlags = [
+    # A hook does this but after wrapGAppsHook so the files never get wrapped.
+    "--sbindir=${placeholder "out"}/bin"
+    # baked into the program for discovery of the greeter configuration
+    "--sysconfdir=/etc"
+    "-Dgsd-dir=${gnome-settings-daemon}/libexec/" # trailing slash is needed
+  ];
+
+  preFixup = ''
+    gappsWrapperArgs+=(
+      # dbus-launch needed in path
+      --prefix PATH : "${dbus}/bin"
+
+      # for `io.elementary.wingpanel -g`
+      --prefix PATH : "${wingpanel-with-indicators}/bin"
+
+      # for the compositor
+      --prefix PATH : "$out/bin"
+
+      # the GTK theme is hardcoded
+      --prefix XDG_DATA_DIRS : "${elementary-gtk-theme}/share"
+
+      # the icon theme is hardcoded
+      --prefix XDG_DATA_DIRS : "$XDG_ICON_DIRS"
+    )
+  '';
+
+  postFixup = ''
+    # Use NixOS default wallpaper
+    substituteInPlace $out/etc/lightdm/io.elementary.greeter.conf \
+      --replace "#default-wallpaper=/usr/share/backgrounds/elementaryos-default" \
+      "default-wallpaper=${nixos-artwork.wallpapers.simple-dark-gray.gnomeFilePath}"
+
+    substituteInPlace $out/share/xgreeters/io.elementary.greeter.desktop \
+      --replace "Exec=io.elementary.greeter" "Exec=$out/bin/io.elementary.greeter"
+  '';
+
+  passthru = {
+    updateScript = nix-update-script {
+      attrPath = "pantheon.${pname}";
+    };
+
+    xgreeters = linkFarm "pantheon-greeter-xgreeters" [{
+      path = "${elementary-greeter}/share/xgreeters/io.elementary.greeter.desktop";
+      name = "io.elementary.greeter.desktop";
+    }];
+  };
+
+  meta = with lib; {
+    description = "LightDM Greeter for Pantheon";
+    homepage = "https://github.com/elementary/greeter";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+    maintainers = teams.pantheon.members;
+    mainProgram = "io.elementary.greeter";
+  };
+}

pkgs/desktops/pantheon/desktop/elementary-greeter/hardcode-fallback-background.patch

@@ -0,0 +1,22 @@
+diff --git a/src/Widgets/BackgroundImage.vala b/src/Widgets/BackgroundImage.vala
+index ae9431c..f0f2a49 100644
+--- a/src/Widgets/BackgroundImage.vala
++++ b/src/Widgets/BackgroundImage.vala
+@@ -9,7 +9,7 @@ public class Greeter.BackgroundImage : Gtk.EventBox {
+ 
+     public BackgroundImage (string? path) {
+         if (path == null) {
+-            path = "/usr/share/backgrounds/elementaryos-default";
++            path = "@default_wallpaper@";
+         }
+ 
+         try {
+@@ -19,7 +19,7 @@ public class Greeter.BackgroundImage : Gtk.EventBox {
+             critical ("Fallback to default wallpaper");
+ 
+             try {
+-                full_pixbuf = new Gdk.Pixbuf.from_file ("/usr/share/backgrounds/elementaryos-default");
++                full_pixbuf = new Gdk.Pixbuf.from_file ("@default_wallpaper@");
+             } catch (GLib.Error e) {
+                 critical (e.message);
+             }

pkgs/desktops/pantheon/desktop/elementary-greeter/sysconfdir-install.patch

@@ -0,0 +1,25 @@
+From 7bb0d507cbb0122f167127b9f6460bd53d8234de Mon Sep 17 00:00:00 2001
+From: worldofpeace <worldofpeace@users.noreply.github.com>
+Date: Sat, 16 Mar 2019 16:07:24 -0400
+Subject: [PATCH] 'sysconfdir' will be etc not /etc for install
+
+---
+ data/meson.build | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/data/meson.build b/data/meson.build
+index fd54b75..b1120ae 100644
+--- a/data/meson.build
++++ b/data/meson.build
+@@ -20,7 +20,7 @@ i18n.merge_file (
+ 
+ install_data(
+     meson.project_name() + '.conf',
+-    install_dir: join_paths(get_option('sysconfdir'), 'lightdm')
++    install_dir: join_paths(get_option('prefix'), 'etc', 'lightdm')
+ )
+ 
+ test (
+-- 
+2.19.2
+