docbook_xsl_*: Remove builder.sh

pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/builder.sh

···
-source $stdenv/setup
-
-mkdir -p $out/xml/dtd/docbook-ebnf
-cd $out/xml/dtd/docbook-ebnf
-cp -p $dtd dbebnf.dtd
-cp -p $catalog $(stripHash $catalog)

pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix

···
 {stdenv, fetchurl, unzip}:
 
-assert unzip != null;
-
 stdenv.mkDerivation {
   name = "docbook-xml-ebnf-1.2b1";
-  builder = ./builder.sh;
+
   dtd = fetchurl {
     url = http://www.docbook.org/xml/ebnf/1.2b1/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 = stdenv.lib.platforms.unix;

pkgs/data/sgml+xml/schemas/xml-dtd/docbook/builder.sh

···
-source $stdenv/setup
-
-mkdir -p $out/xml/dtd/docbook
-cd $out/xml/dtd/docbook
-unpackFile $src
-find . -type f -exec chmod -x {} \;
-eval "$postInstall"

pkgs/data/sgml+xml/schemas/xml-dtd/docbook/generic.nix

···
 { stdenv, fetchurl, unzip, src, name, postInstall ? "true", meta ? {}, findXMLCatalogs }:
 
-assert unzip != null;
-
 stdenv.mkDerivation {
   inherit src name postInstall;
-  builder = ./builder.sh;
+
   nativeBuildInputs = [unzip];
   propagatedNativeBuildInputs = [ findXMLCatalogs ];
+
+  unpackPhase = ''
+    mkdir -p $out/xml/dtd/docbook
+    cd $out/xml/dtd/docbook
+    unpackFile $src
+  '';
+
+  installPhase = ''
+    find . -type f -exec chmod -x {} \;
+    runHook postInstall
+  '';
 
   meta = meta // {
     platforms = stdenv.lib.platforms.unix;