main/postmarketos-artwork: add gnome wallpapers (MR 4156)

Add GNOME specific wallpapers with a good contrast, so lables for
launchers on top of the wallpaper can be read nicely.

Also set myself as maintainer since the original maintainer didn't
change the package since 2018.

main/postmarketos-artwork/APKBUILD

@@ -1,16 +1,17 @@
-# Maintainer: Olgierd "moondeck" Nowakowski <olgierd@novakovsky.eu>
+# Maintainer: Oliver Smith <ollieparanoid@postmarketos.org>
 pkgname=postmarketos-artwork
-pkgver=2
-pkgrel=1
+pkgver=3
+pkgrel=0
 pkgdesc="Meta package for the postmarketOS artwork"
 url="https://postmarketos.org/"
 arch="noarch"
 license="CC-BY-SA-4.0"
-_hash="03553d4ab273d83c40a75e0355e3d93044897411"
+_hash="cebafc36eeb73bf135cd977dc6dc490f72876007"
 source="postmarketos-artwork-$_hash.tar.gz::https://gitlab.com/postmarketOS/artwork/-/archive/$_hash/artwork-$_hash.tar.gz"
 subpackages="
 	$pkgname-wallpapers
 	$pkgname-wallpapers-extra:wallpapers_extra
+	$pkgname-wallpapers-gnome:wallpapers_gnome
 	$pkgname-icons
 	$pkgname-sounds
 	"
@@ -44,6 +45,14 @@ wallpapers_extra() {
 		"$subpkgdir"/usr/share/wallpapers/pmos.jpg
 }
 
+wallpapers_gnome() {
+	pkgdesc="postmarketOS wallpapers for GNOME"
+	install -Dm644 "$srcdir"/artwork-$_hash/wallpapers/gnome/pmos-light.jpg \
+		"$subpkgdir"/usr/share/wallpapers/postmarketos-gnome-light.jpg
+	install -Dm644 "$srcdir"/artwork-$_hash/wallpapers/gnome/pmos-dark.jpg \
+		"$subpkgdir"/usr/share/wallpapers/postmarketos-gnome-dark.jpg
+}
+
 icons() {
 	pkgdesc="Icons for postmarketOS"
 	install -Dm644 "$srcdir"/artwork-$_hash/logo/logo.svg \
@@ -63,4 +72,6 @@ sounds() {
 		"$subpkgdir"/usr/share/sounds/postmarketOS/
 }
 
-sha512sums="2a9dc5738de6f79d81253da45755bb97065468a04a3123d2ab68bdc4c4080569f568dcccc9ededecb58681233432ff4ef7dca97fa2cd8df71f805894c00883f0  postmarketos-artwork-03553d4ab273d83c40a75e0355e3d93044897411.tar.gz"
+sha512sums="
+f05e7e4c54d295dddd3799f728bbfd7773ecb5677ffb053350096415066533dffd1ddc4188ecf970f0fc3312fcc6cac92dadca54a7139e1bed8224157e963f13  postmarketos-artwork-cebafc36eeb73bf135cd977dc6dc490f72876007.tar.gz
+"