[conf-libclang] Fix no libclang-cpp-dev in old Debian and Ubuntu

Debian 10 (and below) and Ubuntu <22.04 do not have libclang-cpp-dev
package.

Author: thierry-martinez

packages/conf-libclang/conf-libclang.13/opam

@@ -14,8 +14,10 @@ depexts: [
     {(os-distribution = "debian" & os-version >= "12") |
      (os-distribution = "ubuntu" & os-version >= "22.04")}
   ["libclang-dev" "libclang-cpp-dev" "llvm-dev"] {
+     os-distribution = "debian" & os-version >= "11"}
+  ["libclang-dev" "llvm-dev"] {
      os-family = "debian" &
-     !(os-distribution = "debian" & os-version >= "12") &
+     !(os-distribution = "debian" & os-version < "11") &
      !(os-distribution = "ubuntu" & os-version >= "22.04")}
   ["clang-dev" "llvm-dev" "clang-static"] {os-distribution = "alpine"}
   ["clang-devel" "llvm-devel" "llvm-static" "zlib-devel"]

packages/conf-libclang/conf-libclang.14/opam

@@ -14,8 +14,10 @@ depexts: [
     {(os-distribution = "debian" & os-version >= "12") |
      (os-distribution = "ubuntu" & os-version >= "22.04")}
   ["libclang-dev" "libclang-cpp-dev" "llvm-dev"] {
+     os-distribution = "debian" & os-version >= "11"}
+  ["libclang-dev" "llvm-dev"] {
      os-family = "debian" &
-     !(os-distribution = "debian" & os-version >= "12") &
+     !(os-distribution = "debian" & os-version < "11") &
      !(os-distribution = "ubuntu" & os-version >= "22.04")}
   ["clang-dev" "llvm-dev" "clang-static"] {os-distribution = "alpine"}
   ["clang-devel" "llvm-devel" "llvm-static" "zlib-devel"]

packages/conf-libclang/conf-libclang.15/opam

@@ -16,8 +16,10 @@ depexts: [
     {(os-distribution = "debian" & os-version >= "12") |
      (os-distribution = "ubuntu" & os-version = "22.04")}
   ["libclang-dev" "libclang-cpp-dev" "llvm-dev"] {
+     os-distribution = "debian" & os-version >= "11"}
+  ["libclang-dev" "llvm-dev"] {
      os-family = "debian" &
-     !(os-distribution = "debian" & os-version >= "12") &
+     !(os-distribution = "debian" & os-version < "11") &
      !(os-distribution = "ubuntu" & os-version >= "22.04")}
   ["clang-dev" "llvm-dev" "clang-static"] {os-distribution = "alpine"}
   ["clang-devel" "llvm-devel" "llvm-static" "zlib-devel"]