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

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{ stdenv, pythonPackages, fetchurl, xpdf }:
let
py = pythonPackages;
in
py.buildPythonApplication rec {
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name = "pdfdiff-${version}";
version = "0.92";
src = fetchurl {
url = "https://www.cs.ox.ac.uk/people/cas.cremers/downloads/software/pdfdiff.py";
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sha256 = "0zxwjjbklz87wkbhkmsvhc7xmv5php7m2a9vm6ydhmhlxsybf836";
};
buildInputs = [ pythonPackages.wrapPython ];
doCheck = false;
phases = [ "unpackPhase" "patchPhase" "installPhase" ];
unpackPhase = "cp $src pdfdiff.py";
postPatch = ''
sed -i -r 's|pdftotextProgram = "pdftotext"|pdftotextProgram = "${xpdf}/bin/pdftotext"|' pdfdiff.py
sed -i -r 's|progName = "pdfdiff.py"|progName = "pdfdiff"|' pdfdiff.py
'';
installPhase = ''
mkdir -p $out/bin
cp pdfdiff.py $out/bin/pdfdiff
chmod +x $out/bin/pdfdiff
substituteInPlace $out/bin/pdfdiff --replace "#!/usr/bin/python" "#!${pythonPackages.python.interpreter}"
'';
meta = with stdenv.lib; {
homepage = "http://www.cs.ox.ac.uk/people/cas.cremers/misc/pdfdiff.html";
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description = "Tool to view the difference between two PDF or PS files";
license = licenses.gpl2Plus;
platforms = platforms.linux;
};
}