app-misc/dragon: improve ebuild

- bump EAPI
- fix LICENSE
- add missing DEPENDs
- remove `-e` and generic die message from sed

Closes: https://bugs.gentoo.org/932189
Signed-off-by: Filip Kobierski <fkobi@pm.me>

app-misc/dragon/dragon-1.2.0-r1.ebuild

@@ -1,23 +1,31 @@
-# Copyright 1999-2022 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=7
+EAPI=8
 
 DESCRIPTION="Simple drag-and-drop source/sink for X and Wayland"
 HOMEPAGE="https://github.com/mwh/dragon"
 SRC_URI="https://github.com/mwh/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
 
-LICENSE="GPL-3"
+LICENSE="GPL-3+"
 SLOT="0"
 KEYWORDS="~amd64"
 
-DEPEND=">=x11-libs/gtk+-3"
+DEPEND="
+	app-accessibility/at-spi2-core
+	dev-libs/glib
+	media-libs/harfbuzz
+	x11-libs/cairo
+	x11-libs/gtk+:3
+	x11-libs/gdk-pixbuf
+	x11-libs/pango
+"
 RDEPEND="${DEPEND}"
 
 src_prepare() {
 	default
-	sed -e 's/\(`pkg-config --cflags .*`\) \(`pkg-config --libs .*`\)/\1 $(CFLAGS) \2 $(LDFLAGS)/' \
-		-i Makefile || die "sed failed"
+	sed 's/\(`pkg-config --cflags .*`\) \(`pkg-config --libs .*`\)/\1 $(CFLAGS) \2 $(LDFLAGS)/' \
+		-i Makefile || die
 }
 
 src_install() {