app-emacs/xelb: bump to 0.21

Signed-off-by: Maciej Barć <xgqt@gentoo.org>

app-emacs/xelb/Manifest

@@ -1 +1,2 @@
 DIST xelb-0.20.tar.gz 143475 BLAKE2B d72e4c6634065b4900b7f1259ab362576c5f9ec7781ca379564809f32796cc2cd872501c80411d4f90ecda6058b9308ddb747407097bca2dbf662383fc3cad35 SHA512 15eae53bafbb677e53e2b8fa43f2672868c49eb3f294b27ccf03a9e72fe3dc958b46874d15092fc1e57dd0dcb7b969e53104df0c868bfbb18c313a96b9b42528
+DIST xelb-0.21.tar.gz 144282 BLAKE2B a5d710534185ecb25824013ee4dfc395ed80082cb20f9128abb393ff994942dd73c893dca763782d11029cdf3a63931adb39df1d67422fc029c15759b8443cb7 SHA512 0ef21d6aaa722d814e659dbe8a21c58eaeb322a9704ebc9fbaa3fdc982cc142bd59a8534e85ee3c68ae55982e1e5ee5d1e66638d8c1dafbe710fa4b70041ca39

app-emacs/xelb/xelb-0.21.ebuild

@@ -0,0 +1,34 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+NEED_EMACS="27.1"
+
+inherit elisp
+
+DESCRIPTION="X protocol Emacs Lisp Binding"
+HOMEPAGE="https://github.com/emacs-exwm/xelb/"
+
+if [[ "${PV}" == *9999* ]] ; then
+	inherit git-r3
+
+	EGIT_REPO_URI="https://github.com/emacs-exwm/${PN}.git"
+else
+	SRC_URI="https://github.com/emacs-exwm/${PN}/archive/${PV}.tar.gz
+		-> ${P}.tar.gz"
+
+	KEYWORDS="~amd64 ~x86"
+fi
+
+LICENSE="GPL-3+"
+SLOT="0"
+
+RDEPEND="
+	>=app-emacs/compat-30.0.0.0
+	app-editors/emacs[gui]
+	x11-apps/xauth
+"
+
+DOCS=( README.md )
+SITEFILE="50${PN}-gentoo.el"