poetry2nix/tests/pytesseract/default.nix

{ poetry2nix, runCommand, python3 }:
let
  env = poetry2nix.mkPoetryEnv {
    python = python3;
    pyproject = ./pyproject.toml;
    poetrylock = ./poetry.lock;
    preferWheels = true;
  };
in
runCommand "pytesseract-test" { } ''
  ${env}/bin/python -c 'import pytesseract; print(pytesseract.get_tesseract_version())' > $out
''
Add dependency on native Tesseract OCR executable for pytesseract The pytesseract package needs to have the `tesseract` executable available at runtime to work. By default, the Python package looks for the `tesseract` executable in the PATH. This doesn't work here, so we need to override the `tesseract_cmd` with the path to the `tesseract` executable we pulled in from Nix. I did this with a patch [based on how pytesseract is set up in Nixpkgs][1]. The patching code feels a bit fiddly. I don't know the idiomatic way to do this sort of thing. I included a test that will fail if pytesseract cannot find the `tesseract` executable. The test passed for me with both `preferWheels = true` and `preferWheels = false`, but I only included one in the test suite here, not sure if it makes sense to have both—the actual patching code had to be a bit different depending on whether the source was a wheel or not. [1]: https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/python-modules/pytesseract/tesseract-binary.patch 2023-10-17 12:32:00 -07:00			`{ poetry2nix, runCommand, python3 }:`
			`let`
			`env = poetry2nix.mkPoetryEnv {`
			`python = python3;`
			`pyproject = ./pyproject.toml;`
			`poetrylock = ./poetry.lock;`
			`preferWheels = true;`
			`};`
			`in`
			`runCommand "pytesseract-test" { } ''`
			`${env}/bin/python -c 'import pytesseract; print(pytesseract.get_tesseract_version())' > $out`
			`''`