fixed #6

meson.build

@@ -8,50 +8,45 @@ else
 	install_postfix = ''
 endif
 
-venv_path = get_option('prefix') / get_option('datadir') / ('osc-kreuz' + install_postfix) / 'venv'
+install_venv_path = get_option('prefix') / get_option('datadir') / ('osc-kreuz' + install_postfix) / 'venv'
 build_venv_path = meson.current_source_dir() / 'venv'
 wheel_name = 'osc_kreuz-' + meson.project_version() + '-py3-none-any.whl'
 
-# creating virtual environments
-meson.add_install_script(
-	'sh', '-c',
-	'sudo python3 -m venv @0@; '.format(venv_path)
-)
+# --- build python wheel
+# create venv (does nothing if it already exists)
+run_command('python3',  '-m',  'venv', build_venv_path, check: true)
 
-meson.add_install_script(
-	'sh', '-c',
-	'python3 -m venv @0@; '.format(build_venv_path)
-)
+# install build
+run_command('@0@/bin/pip'.format(build_venv_path),  'install', 'build', check: true)
 
-# build python wheel
-meson.add_install_script(
-	'sh', '-c',
-	'@0@/bin/pip install build;'.format(build_venv_path)
-)
+# build wheel
+run_command('@0@/bin/python3'.format(build_venv_path), '-m', 'build', '--wheel', meson.current_source_dir(), check: true)
 
+
+# --- install osc-kreuz with pip
+
+# create virtual environment
 meson.add_install_script(
 	'sh', '-c',
-	'@0@/bin/python3 -m build --wheel @1@'.format(build_venv_path, meson.current_source_dir())
+	'sudo python3 -m venv @0@; '.format(install_venv_path)
 )
-
-# installing osc-kreuz with pip
-# uses pip of the created virtual environment
+# use pip of the created virtual environment to install the wheel
 meson.add_install_script(
 	'sh', '-c',
 	'sudo @0@/bin/pip install @1@; '.format(
-		venv_path, meson.current_source_dir() / 'dist' / wheel_name)
+		install_venv_path, meson.current_source_dir() / 'dist' / wheel_name)
 )
 
-# linking osc-kreuz binary to bindir
+# symlink osc-kreuz binary to bindir
 meson.add_install_script(
 	'sh', '-c',
 	'sudo ln -s -f @0@ @1@'.format(
-        venv_path / 'bin' / 'osc-kreuz',
+        install_venv_path / 'bin' / 'osc-kreuz',
         get_option('prefix') / get_option('bindir') / 'osc-kreuz' + install_postfix)
 )
 
 if get_option('versioned_install')
-	# linking osc-kreuz binary to bindir
+	# symlink version specific osc-kreuz binary to bindir
 	meson.add_install_script(
 		'sh', '-c',
 		'sudo ln -s -f @0@ @1@'.format(