Update version scripts to support Ghostscript 10.0

tests/test_main.py

@@ -12,10 +12,11 @@ from unittest.mock import patch
 
 import pikepdf
 import pytest
+from packaging.version import Version
 from PIL import Image
 
 import ocrmypdf
-from ocrmypdf._exec import ghostscript, tesseract
+from ocrmypdf._exec import tesseract
 from ocrmypdf.exceptions import ExitCode, MissingDependencyError
 from ocrmypdf.pdfa import file_claims_pdfa
 from ocrmypdf.pdfinfo import Colorspace, Encoding, PdfInfo
@@ -178,7 +179,8 @@ def test_maximum_options(renderer, output_type, multipage, outpdf):
 
 
 @pytest.mark.skipif(
-    tesseract.version() >= '5', reason="tess 5 tries harder to find its files"
+    Version(tesseract.version()) >= Version('5'),
+    reason="tess 5 tries harder to find its files",
 )
 def test_tesseract_missing_tessdata(monkeypatch, resources, no_outpdf, tmpdir):
     monkeypatch.setenv("TESSDATA_PREFIX", os.fspath(tmpdir))
@@ -777,9 +779,6 @@ def test_sidecar_nonempty(resources, outpdf):
 
 @pytest.mark.parametrize('pdfa_level', ['1', '2', '3'])
 def test_pdfa_n(pdfa_level, resources, outpdf):
-    if pdfa_level == '3' and ghostscript.version() < '9.19':
-        pytest.xfail(reason='Ghostscript >= 9.19 required')
-
     check_ocrmypdf(
         resources / 'ccitt.pdf',
         outpdf,

tests/test_validation.py

@@ -223,6 +223,12 @@ def test_version_comparison():
         need_version='4.1.1',
         version_parser=TesseractVersion,
     )
+    vd.check_external_program(
+        program="gs",
+        package="ghostscript",
+        version_checker=lambda: '10.0',
+        need_version='9.50',
+    )
     with pytest.raises(MissingDependencyError):
         vd.check_external_program(
             program="tesseract",