{stdenv, fetchsvn, perl, cmake}: stdenv.mkDerivation rec { name = "libical-0.48-p20120623"; src = fetchsvn { url = "https://freeassociation.svn.sourceforge.net/svnroot/freeassociation/trunk/libical"; rev = "1130"; sha256 = "56caf19abdf44807fda75a67ef0886319551e53c4e4ece4da4fc862e34c64e1a"; }; buildNativeInputs = [ perl cmake ]; patches = [ ./respect-env-tzdir.patch ]; }