Make antlr optional (#423)

* make antlr4 optional * mark optional import with pytest * add optional entry * add py312 * add new locks --------- Co-authored-by: Martin Yeo <[email protected]>
SciTools · Sep 26, 2024 · d22c5ea · d22c5ea
1 parent d758886
commit d22c5ea
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Showing 5 changed files with 14 additions and 2 deletions.
diff --git a/cf_units/tests/integration/parse/test_graph.py b/cf_units/tests/integration/parse/test_graph.py
@@ -2,6 +2,9 @@
 #
 # This file is part of cf-units and is released under the BSD license.
 # See LICENSE in the root of the repository for full licensing details.
+import pytest
+
+antlr4 = pytest.importorskip("antlr4")
 
 import cf_units._udunits2_parser.graph as g
 from cf_units._udunits2_parser import parse

diff --git a/cf_units/tests/integration/parse/test_parse.py b/cf_units/tests/integration/parse/test_parse.py
@@ -2,6 +2,9 @@
 #
 # This file is part of cf-units and is released under the BSD license.
 # See LICENSE in the root of the repository for full licensing details.
+import pytest
+
+antlr4 = pytest.importorskip("antlr4")
 
 import re
 

diff --git a/cf_units/tests/test_tex.py b/cf_units/tests/test_tex.py
@@ -2,6 +2,9 @@
 #
 # This file is part of cf-units and is released under the BSD license.
 # See LICENSE in the root of the repository for full licensing details.
+import pytest
+
+antlr4 = pytest.importorskip("antlr4")
 
 from cf_units.tex import tex
 

diff --git a/requirements/cf-units.yml b/requirements/cf-units.yml
@@ -11,7 +11,6 @@ dependencies:
   - numpy
 
 # core dependencies
-  - antlr-python-runtime 4.11.1.*  # To update this, see cf_units/_udunits2_parser/README.md
   - cftime>=1.2
   - numpy<2
   - udunits2
@@ -28,3 +27,5 @@ dependencies:
 
 # docs dependencies
   - sphinx
+# latex
+  - antlr-python-runtime 4.11.1.*  # To update this, see cf_units/_udunits2_parser/README.md
diff --git a/setup.cfg b/setup.cfg
@@ -35,7 +35,6 @@ version = attr: cf_units.__version__
 [options]
 include_package_data = True
 install_requires =
-    antlr4-python3-runtime ==4.11.1  # To update this, see cf_units/_udunits2_parser/README.md
     cftime >=1.2
     jinja2
     numpy ==1.26.4
@@ -47,6 +46,8 @@ python_requires =
 zip_safe = False
 
 [options.extras_require]
+latex =
+    antlr4-python3-runtime ==4.11.1  # To update this, see cf_units/_udunits2_parser/README.md
 docs =
     sphinx
 test =
@@ -58,6 +59,7 @@ test =
     pytest-cov
 all =
     pre-commit
+    %(latex)s
     %(docs)s
     %(test)s