add hacks to satisfy mypy due to apparent bugs in typing

sed/calibrator/energy.py

@@ -1732,8 +1732,10 @@ def peakdetect1d(
     if lookahead < 1:
         raise ValueError("Lookahead must be '1' or above in value")
 
-    if not (np.isscalar(delta) and delta >= 0):
+    if not (np.isscalar(delta) and cast(int, delta) >= 0):
         raise ValueError("delta must be a positive number")
+    # Hack because TypeGuard with numpy 1.22.4 seems broken
+    delta = cast(int, delta)
 
     # maxima and minima candidates are temporarily stored in
     # mx and mn respectively

tests/test_binning.py

@@ -1,6 +1,7 @@
 """This file contains code that performs several tests for the sed.binning module
 """
 from typing import Any
+from typing import cast
 from typing import List
 from typing import Sequence
 from typing import Tuple
@@ -394,7 +395,8 @@ def test_simplify_binning_arguments(
     )
 
     for i, bin_ in enumerate(bins__):
-        np.testing.assert_array_equal(bin_, bins_expected[i])
+        # TODO: Why does typing fail?
+        np.testing.assert_array_equal(cast(np.ndarray, bin_), bins_expected[i])
         np.testing.assert_array_equal(axes__[i], axes_expected[i])
         if ranges__ is not None:
             np.testing.assert_array_equal(ranges__[i], ranges_expected[i])