Add fscrypt

Not happy about the result, I hope someone will create a proper ebuild
some day

sys-fs/fscrypt/fscrypt-0.2.5-r1.ebuild

@@ -0,0 +1,47 @@
+# Copyright 2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+DESCRIPTION="Native filesystem encryption tool"
+HOMEPAGE="https://github.com/google/fscrypt"
+
+LICENSE="Apache-2.0 MIT BSD BSD-2"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE=""
+RDEPEND="sys-libs/pam:=
+	dev-libs/protobuf:="
+
+EGO_PN="${HOMEPAGE#*//}"
+EGIT_COMMIT="6821d90d7c449b63d602c272d5ffa19243a7c517"
+S=${WORKDIR}/${PN}-${EGIT_COMMIT}
+
+EGO_VENDOR=(
+	"github.com/cpuguy83/go-md2man eda4fa589184806b8720ea3b9146491209877a10"
+	"github.com/golang/protobuf v1.2.0"
+	"github.com/pkg/errors v0.8.0"
+	"github.com/urfave/cli v1.20.0"
+	"golang.org/x/crypto cbcb75029529 github.com/golang/crypto"
+	"golang.org/x/sys 63cb32ae39b2 github.com/golang/sys"
+)
+
+inherit go-module
+
+SRC_URI="https://${EGO_PN}/archive/${EGIT_COMMIT}.tar.gz -> ${P}.tar.gz
+	$(go-module_vendor_uris)"
+
+# I don't understand how this is supposed to work
+# It downloads from github at compile time, should not do that
+src_compile() {
+	(
+		unset GOFLAGS
+		GOPATH=${WORKDIR}/go
+		cd "${S}" && go build --ldflags '-s -w -X "main.version=v0.2.5" -extldflags ""' -v -o bin/fscrypt ./cmd/fscrypt
+	)
+}
+
+src_install() {
+	dodoc "${S}/README.md"
+	dobin "${S}/bin/fscrypt"
+}