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{ lib, buildPythonPackage, fetchFromGitHub, numpy, scipy, pillow, fetchpatch }:
buildPythonPackage rec {
pname = "pyssim";
version = "0.6";
format = "setuptools";
propagatedBuildInputs = [ numpy scipy pillow ];
# PyPI tarball doesn't contain test images so let's use GitHub
src = fetchFromGitHub {
owner = "jterrace";
repo = pname;
rev = "v${version}";
sha256 = "sha256-VvxQTvDTDms6Ccyclbf9P0HEQksl5atPPzHuH8yXTmc=";
};
patches = [
# "Replace Image.ANTIALIAS with Image.LANCZOS"
# Image.ANTIALIAS has been removed in Pillow 10.0.0,
# the version currently in nixpkgs,
# and Image.LANCZOS is a drop-in since Pillow 2.7.0.
# https://github.com/jterrace/pyssim/pull/45
(fetchpatch {
url = "https://github.com/jterrace/pyssim/commit/db4296c12ca9c027eb9cd61b52195a78dfcc6711.patch";
hash = "sha256-wNp47EFtjXv6jIFX25IErXg83ksmGRNFKNeMFS+tP6s=";
})
];
# Tests are copied from .travis.yml
checkPhase = ''
$out/bin/pyssim test-images/test1-1.png test-images/test1-1.png | grep 1
$out/bin/pyssim test-images/test1-1.png test-images/test1-2.png | grep 0.998
$out/bin/pyssim test-images/test1-1.png "test-images/*" | grep -E " 1| 0.998| 0.672| 0.648" | wc -l | grep 4
$out/bin/pyssim --cw --width 128 --height 128 test-images/test1-1.png test-images/test1-1.png | grep 1
$out/bin/pyssim --cw --width 128 --height 128 test-images/test3-orig.jpg test-images/test3-rot.jpg | grep 0.938
'';
meta = with lib; {
description = "Module for computing Structured Similarity Image Metric (SSIM) in Python";
homepage = "https://github.com/jterrace/pyssim";
license = licenses.mit;
maintainers = with maintainers; [ jluttine ];
};
}
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