cargo-update: generate lockfile

srcpkgs/cargo-update/template

@@ -1,7 +1,7 @@
 # Template file for 'cargo-update'
 pkgname=cargo-update
 version=13.0.0
-revision=1
+revision=2
 build_style=cargo
 hostmakedepends="pkg-config go-md2man"
 makedepends="libcurl-devel libgit2-devel libssh2-devel openssl-devel"
@@ -18,6 +18,13 @@ if [ "$XBPS_TARGET_MACHINE" == "i686" ]; then
 	make_check_args="-- --skip ops::assert_index_path"
 fi
 
+post_patch() {
+	# Upstream does not ship a lockfile and is very vocal about that being
+	# the right way:
+	# https://github.com/nabijaczleweli/cargo-update/issues/50
+	cargo generate-lockfile
+}
+
 post_install() {
 	vlicense LICENSE
 	vdoc README.md