1 files changed, 26 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix b/nixpkgs/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
new file mode 100644
index 000000000000..6be2e89dcd2e
--- /dev/null
+++ b/nixpkgs/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
@@ -0,0 +1,26 @@
+{lib, stdenv, fetchurl}:
+
+stdenv.mkDerivation rec {
+  pname = "docbook-xml-ebnf";
+  version = "1.2b1";
+
+  dtd = fetchurl {
+    url = "https://docbook.org/xml/ebnf/${version}/dbebnf.dtd";
+    sha256 = "0min5dsc53my13b94g2yd65q1nkjcf4x1dak00bsc4ckf86mrx95";
+  };
+  catalog = ./docbook-ebnf.cat;
+
+  unpackPhase = ''
+    mkdir -p $out/xml/dtd/docbook-ebnf
+    cd $out/xml/dtd/docbook-ebnf
+  '';
+
+  installPhase = ''
+    cp -p $dtd dbebnf.dtd
+    cp -p $catalog $(stripHash $catalog)
+  '';
+
+  meta = {
+    platforms = lib.platforms.unix;
+  };
+}