Fix meson build by adding missing python files

Author: tobiasdiez

src/meson.build

@@ -78,11 +78,7 @@ endif
 # that too to make the fallback detection with CMake work
 blas_order += ['cblas', 'openblas', 'OpenBLAS', 'flexiblas', 'blis', 'blas']
 blas = dependency(blas_order)
-gsl = dependency(
-  'gsl',
-  version: '>=2.5',
-  required: true,
-)
+gsl = dependency('gsl', version: '>=2.5', required: true)
 gd = cc.find_library('gd')
 # Only some platforms have a standalone math library (https://mesonbuild.com/howtox.html#add-math-library-lm-portably)
 m = cc.find_library('m', required: false)

src/sage/matroids/meson.build

@@ -4,6 +4,8 @@ py.install_sources(
   'basis_exchange_matroid.pxd',
   'basis_matroid.pxd',
   'catalog.py',
+  'chow_ring.py',
+  'chow_ring_ideal.py',
   'circuit_closures_matroid.pxd',
   'circuits_matroid.pxd',
   'constructor.py',

src/sage/rings/meson.build

@@ -72,6 +72,7 @@ py.install_sources(
   'ring_extension_element.pxd',
   'ring_extension_homset.py',
   'ring_extension_morphism.pxd',
+  'species.py',
   'sum_of_squares.pxd',
   'tate_algebra.py',
   'tate_algebra_element.pxd',