luaPackages.luaunbound: init at 1.0.0-1

Required for Prosody 0.12.0.

I first tried to run the bare
./maintainers/scripts/update-luarocks-packages, however it did break a
fair share of Lua packages.

In the end, I:

1. Added the luaunbound entry to luarocks-packages.csv
2. Run the update-luprocks-packages.
3. Cherry picked the luaunbound entry
4. Reverted the rest of lua-modules/generated-packages.nix to what we
   currently have in Nixpkgs.
5. Injected the native unbound library via the lua-modules overrides.

maintainers/scripts/luarocks-packages.csv

@@ -64,6 +64,7 @@ luasocket,,,,,,
 luasql-sqlite3,,,,,,vyp
 luassert,,,,,,
 luasystem,,,,,,
+luaunbound,,,,,
 luautf8,,,,,,pstn
 luazip,,,,,,
 lua-yajl,,,,,,pstn

pkgs/development/lua-modules/generated-packages.nix

@@ -1944,6 +1944,31 @@ buildLuarocksPackage {
   };
 }) {};
 
+luaunbound = callPackage({ buildLuarocksPackage, luaOlder, luaAtLeast
+, fetchurl, lua
+}:
+buildLuarocksPackage {
+  pname = "luaunbound";
+  version = "1.0.0-1";
+  knownRockspec = (fetchurl {
+    url    = "https://luarocks.org/luaunbound-1.0.0-1.rockspec";
+    sha256 = "1zlkibdwrj5p97nhs33cz8xx0323z3kiq5x7v0h3i7v6j0h8ppvn";
+  }).outPath;
+  src = fetchurl {
+    url    = "https://code.zash.se/dl/luaunbound/luaunbound-1.0.0.tar.gz";
+    sha256 = "1lsh0ylp5xskygxl5qdv6mhkm1x8xp0vfd5prk5hxkr19jk5mr3d";
+  };
+
+  disabled = with lua; (luaOlder "5.1") || (luaAtLeast "5.5");
+  propagatedBuildInputs = [ lua ];
+
+  meta = {
+    homepage = "https://www.zash.se/luaunbound.html";
+    description = "A binding to libunbound";
+    license.fullName = "MIT";
+  };
+}) {};
+
 luautf8 = callPackage({ buildLuarocksPackage, luaOlder, luaAtLeast
 , fetchurl, lua
 }:

pkgs/development/lua-modules/overrides.nix

@@ -257,6 +257,12 @@ with prev;
     ];
   });
 
+  luaunbound = prev.lib.overrideLuarocks prev.luaunbound(drv: {
+    externalDeps = [
+      { name = "libunbound"; dep = pkgs.unbound; }
+    ];
+  });
+
   luuid = (prev.lib.overrideLuarocks prev.luuid (drv: {
     externalDeps = [
       { name = "LIBUUID"; dep = pkgs.libuuid; }