nixpkgs/pkgs/applications/misc/ocropus/default.nix

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{ stdenv, fetchFromGitHub, fetchurl, pythonPackages, curl }:
let
getmodel = name: sha256: {
src = fetchurl {
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url = "http://www.tmbdev.net/ocropy/${name}";
inherit sha256;
};
inherit name;
};
models = [
(getmodel "en-default.pyrnn.gz"
"1xyi3k3p81mfw0491gb1haisazfyi2i18f1wjs1m34ak39qfqjdp")
(getmodel "fraktur.pyrnn.gz"
"1wlwvxn91ilgmlri1hj81arl3mbzxc24ycdnkf5icq4hdi4c6y8b")
];
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version = "20150316";
in
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pythonPackages.buildPythonPackage {
name = "ocropus-${version}";
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src = fetchFromGitHub {
sha256 = "0m5bm2ah3p29c13vp7hz7rm058qnlm840zd8xv20byijhlz0447g";
rev = "5ba07bb959d605ec15424dd2b8f3d7245820084e";
repo = "ocropy";
owner = "tmbdev";
};
propagatedBuildInputs = with pythonPackages; [ curl numpy scipy pillow
matplotlib beautifulsoup4 pygtk lxml ];
enableParallelBuilding = true;
preConfigure = with stdenv.lib; ''
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${concatStrings (map (x: "ln -s ${x.src} models/`basename ${x.name}`;")
models)}
substituteInPlace ocrolib/{common,default}.py --replace /usr/local $out
'';
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checkPhase = ''
patchShebangs ./run-test
substituteInPlace ./run-test \
--replace 'ocropus-rpred' 'ocropus-rpred -Q $NIX_BUILD_CORES'
PATH=".:$PATH" ./run-test
'';
meta = with stdenv.lib; {
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inherit version;
description = "Open source document analysis and OCR system";
license = licenses.asl20;
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homepage = https://github.com/tmbdev/ocropy/;
maintainers = with maintainers; [ iElectric nckx viric ];
platforms = platforms.linux;
};
}