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-rw-r--r--mesonbuild/modules/python.py21
1 files changed, 21 insertions, 0 deletions
diff --git a/mesonbuild/modules/python.py b/mesonbuild/modules/python.py
index 2b62ea3..a91ec58 100644
--- a/mesonbuild/modules/python.py
+++ b/mesonbuild/modules/python.py
@@ -338,11 +338,13 @@ variables.update({'base_prefix': getattr(sys, 'base_prefix', sys.prefix)})
print(json.dumps({
'variables': variables,
'paths': paths,
+ 'sysconfig_paths': sysconfig.get_paths(),
'install_paths': install_paths,
'sys_paths': sys.path,
'version': sysconfig.get_python_version(),
'platform': sysconfig.get_platform(),
'is_pypy': '__pypy__' in sys.builtin_module_names,
+ 'is_venv': sys.prefix != variables['base_prefix'],
'link_libpython': links_against_libpython(),
}))
'''
@@ -352,7 +354,9 @@ if T.TYPE_CHECKING:
install_paths: T.Dict[str, str]
is_pypy: bool
+ is_venv: bool
link_libpython: bool
+ sysconfig_paths: T.Dict[str, str]
paths: T.Dict[str, str]
platform: str
suffix: str
@@ -377,7 +381,9 @@ class PythonExternalProgram(ExternalProgram):
self.info: 'PythonIntrospectionDict' = {
'install_paths': {},
'is_pypy': False,
+ 'is_venv': False,
'link_libpython': False,
+ 'sysconfig_paths': {},
'paths': {},
'platform': 'sentinal',
'variables': {},
@@ -422,7 +428,22 @@ class PythonExternalProgram(ExternalProgram):
return rel_path
value = state.get_option(f'{key}dir', module='python')
if value:
+ if state.is_user_defined_option('install_env', module='python'):
+ raise mesonlib.MesonException(f'python.{key}dir and python.install_env are mutually exclusive')
return value
+
+ install_env = state.get_option('install_env', module='python')
+ if install_env == 'auto':
+ install_env = 'venv' if self.info['is_venv'] else 'system'
+
+ if install_env == 'system':
+ rel_path = os.path.join(self.info['variables']['prefix'], rel_path)
+ elif install_env == 'venv':
+ if not self.info['is_venv']:
+ raise mesonlib.MesonException('python.install_env cannot be set to "venv" unless you are in a venv!')
+ # inside a venv, deb_system is *never* active hence info['paths'] may be wrong
+ rel_path = self.info['sysconfig_paths'][key]
+
# Use python's path relative to prefix, and warn if that's not a location
# python will lookup for modules.
abs_path = Path(state.get_option('prefix'), rel_path)