Fix ComplexWarning when assigning complex structure coords to real array in minimization step

The Minimizer stores both dyn matrix and structure coords in a single
complex128 state vector. When retrieved via get_dyn_struct(), the
structure returned is complex128 dtype (even with zero imag parts).
Assigning it to the real-valued coords array triggers numpy's
ComplexWarning in numpy >= 2.0.

Bump version to 1.6.1.

Author: mesonepigreco

Modules/SchaMinimizer.py

@@ -634,7 +634,7 @@ def minimization_step(self, custom_function_gradient = None, timer=None):
 
             # Update the structure
             if self.minim_struct:
-                self.dyn.structure.coords[:,:] = new_struct
+                self.dyn.structure.coords[:,:] = np.real(new_struct)
 
             # Check if we must enforce the symmetries and the sum rule:
             if self.enforce_sum_rule and (not self.neglect_symmetries):

meson.build

@@ -1,6 +1,6 @@
 project('python-sscha',
   ['c','fortran'],
-  version : '1.6.0',
+  version : '1.6.1',
   license: 'GPL',
   meson_version: '>= 1.1.0', # <- set min version of meson.
   default_options : [

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "mesonpy"
 
 [project]
 name = "python-sscha"
-version = "1.6.0"
+version = "1.6.1"
 description = "Python implementation of the sscha code"
 authors = [{name = "Lorenzo Monacelli"}] # Put here email
 readme = "README.md"