ldb: clean up expression

* format with nixpkgs-fmt
* quote homepage as per RFC 0045
* split name → pname & version
* do not use aliases
* switch to wafHook

pkgs/development/libraries/ldb/default.nix

@@ -1,21 +1,45 @@
-{ stdenv, fetchurl, python, pkgconfig, readline, tdb, talloc, tevent
-, popt, libxslt, docbook_xsl, docbook_xml_dtd_42, cmocka
+{ stdenv
+, fetchurl
+, python
+, pkg-config
+, readline
+, tdb
+, talloc
+, tevent
+, popt
+, libxslt
+, docbook-xsl-nons
+, docbook_xml_dtd_42
+, cmocka
+, wafHook
 }:
 
 stdenv.mkDerivation rec {
-  name = "ldb-1.3.3";
+  pname = "ldb";
+  version = "1.3.3";
 
   src = fetchurl {
-    url = "mirror://samba/ldb/${name}.tar.gz";
-    sha256 = "14gsrm7dvyjpbpnc60z75j6fz2p187abm2h353lq95kx2bv70c1b"                                                                                                                                                             ;
+    url = "mirror://samba/ldb/${pname}-${version}.tar.gz";
+    sha256 = "14gsrm7dvyjpbpnc60z75j6fz2p187abm2h353lq95kx2bv70c1b";
   };
 
   outputs = [ "out" "dev" ];
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [
+    pkg-config
+    wafHook
+  ];
+
   buildInputs = [
-    python readline tdb talloc tevent popt
-    libxslt docbook_xsl docbook_xml_dtd_42
+    python
+    readline
+    tdb
+    talloc
+    tevent
+    popt
+    libxslt
+    docbook-xsl-nons
+    docbook_xml_dtd_42
     cmocka
   ];
 
@@ -30,11 +54,9 @@ stdenv.mkDerivation rec {
     })
   ];
 
-  preConfigure = ''
-    sed -i 's,#!/usr/bin/env python,#!${python}/bin/python,g' buildtools/bin/waf
-  '';
+  wafPath = "buildtools/bin/waf";
 
-  configureFlags = [
+  wafConfigureFlags = [
     "--bundled-libraries=NONE"
     "--builtin-libraries=replace"
   ];
@@ -43,7 +65,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A LDAP-like embedded database";
-    homepage = https://ldb.samba.org/;
+    homepage = "https://ldb.samba.org/";
     license = licenses.lgpl3Plus;
     platforms = platforms.all;
   };