diff --git a/app-editors/kakoune/files/kakoune-2021.11.08-gcc12.patch b/app-editors/kakoune/files/kakoune-2021.11.08-gcc12.patch
new file mode 100644
index 0000000000000..7f1101cdbf498
--- /dev/null
+++ b/app-editors/kakoune/files/kakoune-2021.11.08-gcc12.patch
@@ -0,0 +1,58 @@
+https://bugs.gentoo.org/840647
+https://github.com/mawww/kakoune/issues/4544
+https://github.com/mawww/kakoune/pull/4549
+https://github.com/mawww/kakoune/commit/d1ea2ffa600fd2a7b14e415b68ceedba3325c5db
+
+commit d1ea2ffa600fd2a7b14e415b68ceedba3325c5db
+Author: Tim Allen <screwtape@froup.com>
+Date:   Sat Feb 12 21:35:33 2022 +1100
+
+    Make Color::validate_alpha() a constexpr function.
+    
+    We call it from a constexpr constructor, so it needs to be constexpr itself.
+    
+    Fixes #4544.
+
+diff --git a/src/color.cc b/src/color.cc
+index b355b9cf..dfe2e955 100644
+--- a/src/color.cc
++++ b/src/color.cc
+@@ -34,13 +34,6 @@ bool is_color_name(StringView color)
+     return contains(color_names, color);
+ }
+ 
+-void Color::validate_alpha()
+-{
+-    static_assert(RGB == 17);
+-    if (a < RGB)
+-        throw runtime_error("Colors alpha must be > 16");
+-}
+-
+ Color str_to_color(StringView color)
+ {
+     auto it = find_if(color_names, [&](const char* c){ return color == c; });
+diff --git a/src/color.hh b/src/color.hh
+index 943678ed..85babd98 100644
+--- a/src/color.hh
++++ b/src/color.hh
+@@ -1,6 +1,7 @@
+ #ifndef color_hh_INCLUDED
+ #define color_hh_INCLUDED
+ 
++#include "exception.hh"
+ #include "hash.hh"
+ #include "meta.hh"
+ #include "assert.hh"
+@@ -55,7 +56,11 @@ struct Color
+     }
+ 
+ private:
+-    void validate_alpha();
++    constexpr void validate_alpha() {
++        static_assert(RGB == 17);
++        if (a < RGB)
++            throw runtime_error("Colors alpha must be > 16");
++    }
+ };
+ 
+ constexpr bool operator==(Color lhs, Color rhs)
diff --git a/app-editors/kakoune/kakoune-2021.11.08-r1.ebuild b/app-editors/kakoune/kakoune-2021.11.08-r1.ebuild
new file mode 100644
index 0000000000000..37633ce21f75f
--- /dev/null
+++ b/app-editors/kakoune/kakoune-2021.11.08-r1.ebuild
@@ -0,0 +1,44 @@
+# Copyright 2020-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit toolchain-funcs
+
+DESCRIPTION="Modal editor inspired by vim"
+HOMEPAGE="http://kakoune.org/ https://github.com/mawww/kakoune"
+SRC_URI="https://github.com/mawww/kakoune/releases/download/v${PV}/${P}.tar.bz2"
+
+LICENSE="Unlicense"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~x86"
+
+BDEPEND="virtual/pkgconfig"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-gcc12.patch
+)
+
+src_prepare() {
+	sed -i '/CXXFLAGS += -O3/d' src/Makefile || die
+	default
+}
+
+src_configure() {
+	tc-export CXX
+}
+
+src_compile() {
+	emake -C src all
+}
+
+src_test() {
+	emake -C src test
+}
+
+src_install() {
+	emake PREFIX="${D}"/usr docdir="${ED}/usr/share/doc/${PF}" install
+
+	rm "${ED}/usr/share/man/man1/kak.1.gz" || die
+	doman doc/kak.1
+}