{stdenv, fetchurl, libpng, libtiff, libjpeg, zlib}: stdenv.mkDerivation { name = "leptonica-1.72"; src = fetchurl { url = http://www.leptonica.org/source/leptonica-1.72.tar.gz; sha256 = "0mhzvqs0im04y1cpcc1yma70hgdac1frf33h73m9z3356bfymmbr"; }; buildInputs = [ libpng libtiff libjpeg zlib ]; meta = { description = "Image processing and analysis library"; homepage = http://www.leptonica.org/; # Its own license: http://www.leptonica.org/about-the-license.html license = stdenv.lib.licenses.free; }; }