Allow numpy absence from SBML dependencies in setup script

Author: langmm

utils/install_from_requirements.py

@@ -11,6 +11,11 @@
     PYTHON_CMD, CONDA_CMD, _is_win)
 
 
+class DependencyNotFound(BaseException):
+    r"""Exception raised when a dependency cannot be located."""
+    pass
+
+
 def isolate_package_name(entry):
     r"""Get the package name without any constraints or conditions.
 
@@ -65,7 +70,7 @@ def get_pip_dependency_version(pkg, dep):
             if m.group('ver'):
                 ver = m.group('ver').strip()
             return dep + ver
-    raise RuntimeError(
+    raise DependencyNotFound(
         ("Could not locate the dependency '%s' "
          "in the list of requirements for package '%s': %s")
         % (dep, pkg, reqs))

utils/setup_test_env.py

@@ -552,7 +552,8 @@ def itemize_deps(method, for_development=False,
             used.
 
     """
-    from install_from_requirements import get_pip_dependency_version
+    from install_from_requirements import (
+        get_pip_dependency_version, DependencyNotFound)
     out = {'conda': [], 'pip': [], 'os': [], 'skip': [],
            'apt': [], 'brew': [], 'choco': [], 'vcpkg': [],
            'requirements': ['requirements_optional.txt'],
@@ -693,7 +694,7 @@ def itemize_deps(method, for_development=False,
                     "conda if a conda environment is being used to avoid "
                     "inconsistencies)." % new_numpy_ver)
             numpy_ver = new_numpy_ver
-        except (ImportError, ModuleNotFoundError):
+        except (ImportError, ModuleNotFoundError, DependencyNotFound):
             pass
         out['conda'].insert(0, numpy_ver.replace('==', '>='))
         out['skip'].append('libroadrunner')