{ 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"; mainProgram = "pyssim"; homepage = "https://github.com/jterrace/pyssim"; license = licenses.mit; maintainers = with maintainers; [ jluttine ]; }; }