3 files changed, 12 insertions, 0 deletions
diff --git a/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/3.1.nix b/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/3.1.nix
index 6f29c78eca6..b7ab83aa577 100644
--- a/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/3.1.nix
+++ b/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/3.1.nix
@@ -30,4 +30,8 @@ stdenv.mkDerivation {
       unzip ${isoents}
       sed -e "s/iso-/ISO/" -e "s/.gml//" -i docbook.cat
     '';
+
+  meta = {
+    platforms = stdenv.lib.platforms.unix;
+  };
 }
diff --git a/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/4.1.nix b/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/4.1.nix
index 811515ee55b..424a44c1bc7 100644
--- a/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/4.1.nix
+++ b/pkgs/data/sgml+xml/schemas/sgml-dtd/docbook/4.1.nix
@@ -30,4 +30,8 @@ stdenv.mkDerivation {
       unzip ${isoents}
       sed -e "s/iso-/ISO/" -e "s/.gml//" -i docbook.cat
     '';
+
+  meta = {
+    platforms = stdenv.lib.platforms.unix;
+  };
 }
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
index 5d5a622ba42..0df76cd2876 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
@@ -10,4 +10,8 @@ stdenv.mkDerivation {
     md5 = "e50f7d38caf4285965c7a247e026fa7c";
   };
   catalog = ./docbook-ebnf.cat;
+
+  meta = {
+    platforms = stdenv.lib.platforms.unix;
+  };
 }