Patch conf-unwind.0 instead

Author: dra27

packages/conf-unwind/conf-unwind.0/opam

@@ -7,7 +7,7 @@ license: "MIT"
 build: [["pkg-config" "--short-errors" "--print-errors" "libunwind"]]
 depends: ["conf-pkg-config" {build}]
 depexts: [
-  ["libunwind-dev"] {os-family = "debian"}
+  ["libunwind-dev"] {os-family = "debian" | os-family = "ubuntu"}
   ["libunwind-devel"] {os-distribution = "centos"}
   ["libunwind-devel"] {os-distribution = "rhel"}
   ["libunwind-devel"] {os-distribution = "fedora"}