Fix Error In Some Cases With With Meson Python Not Found

In some cases meson does not find python or python for the right arch, fix this by using the projects meson param to specify the python installation currently being used.

https://github.com/wingtk/gvsbuild/blob/acd2a4a9faee3d987cfc36b48fa8e7d7d3e52ec8/gvsbuild/projects/gobject_introspection.py#L64

#1298

gvsbuild/projects/pycairo.py

@@ -12,7 +12,7 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, see <http://www.gnu.org/licenses/>.
-
+import sys
 from pathlib import Path
 
 from gvsbuild.utils.base_builders import Meson
@@ -33,7 +33,8 @@ def __init__(self):
  )
 
  def build(self):
- Meson.build(self)
+ py_dir = Path(sys.executable).parent
+ Meson.build(self, meson_params=f'-Dpython="{py_dir}\\python.exe"')
  cairo_inc = Path(self.builder.gtk_dir) / "include" / "cairo"
  self.builder.mod_env("INCLUDE", str(cairo_inc))
  self.exec_vs(r"%(python_dir)s\python.exe -m build")

gvsbuild/projects/pygobject.py

@@ -12,7 +12,7 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, see <http://www.gnu.org/licenses/>.
-
+import sys
 from pathlib import Path
 
 from gvsbuild.utils.base_builders import Meson
@@ -38,7 +38,8 @@ def __init__(self):
  )
 
  def build(self):
- Meson.build(self)
+ py_dir = Path(sys.executable).parent
+ Meson.build(self, meson_params=f'-Dpython="{py_dir}\\python.exe"')
  gtk_dir = self.builder.gtk_dir
  add_inc = [
  str(Path(gtk_dir) / "include" / "cairo"),