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{ stdenv, fetchurl, findXMLCatalogs
# Optional Dependencies
, icu ? null, python ? null, readline ? null, zlib ? null, xz ? null
}:
#TODO: share most stuff between python and non-python builds, perhaps via multiple-output
let
mkFlag = trueStr: falseStr: cond: name: val:
if cond == null then null else
"--${if cond != false then trueStr else falseStr}${name}${if val != null && cond != false then "=${val}" else ""}";
mkEnable = mkFlag "enable-" "disable-";
mkWith = mkFlag "with-" "without-";
mkOther = mkFlag "" "" true;
shouldUsePkg = pkg: if pkg != null && stdenv.lib.any (x: x == stdenv.system) pkg.meta.platforms then pkg else null;
optIcu = shouldUsePkg icu;
optPython = shouldUsePkg python;
optReadline = shouldUsePkg readline;
optZlib = shouldUsePkg zlib;
optXz = shouldUsePkg xz;
sitePackages = if optPython == null then null else
"\${out}/lib/${python.libPrefix}/site-packages";
in
stdenv.mkDerivation rec {
name = "libxml2-${version}";
version = "2.9.2";
src = fetchurl {
url = "http://xmlsoft.org/sources/${name}.tar.gz";
sha256 = "1g6mf03xcabmk5ing1lwqmasr803616gb2xhn7pll10x2l5w6y2i";
};
buildInputs = [ optIcu optPython optReadline optZlib optXz ];
propagatedBuildInputs = [ findXMLCatalogs ];
configureFlags = [
(mkWith (optIcu != null) "icu" optIcu)
(mkWith (optPython != null) "python" optPython)
(mkWith (optPython != null) "python-install-dir" sitePackages)
(mkWith (optReadline != null) "readline" optReadline)
(mkWith (optZlib != null) "zlib" optZlib)
(mkWith (optXz != null) "lzma" optXz)
];
enableParallelBuilding = true;
meta = with stdenv.lib; {
homepage = http://xmlsoft.org/;
description = "An XML parsing library for C";
license = licenses.mit;
platforms = platforms.unix;
maintainers = with maintainers; [ eelco wkennington ];
};
passthru = {
inherit version;
pythonSupport = python != null;
};
}
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