sys-process/btop: update icon cache and desktop database

Signed-off-by: Florian Schmaus <flow@gentoo.org>

sys-process/btop/btop-1.2.7-r1.ebuild

@@ -3,6 +3,8 @@
 
 EAPI=8
 
+inherit xdg-utils
+
 DESCRIPTION="A monitor of resources"
 HOMEPAGE="https://github.com/aristocratos/btop"
 SRC_URI="https://github.com/aristocratos/btop/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
@@ -30,3 +32,13 @@ src_install() {
 
 	dodoc README.md CHANGELOG.md
 }
+
+pkg_postinst() {
+	xdg_desktop_database_update
+	xdg_icon_cache_update
+}
+
+pkg_postrm() {
+	xdg_desktop_database_update
+	xdg_icon_cache_update
+}