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On Windows, Python needs to have a proper PYTHONHOME, otherwise a warning is issued

This commit is contained in:
klayoutmatthias 2024-01-24 00:30:15 +01:00
parent f1f92e5a0c
commit ef4cbb045b
1 changed files with 34 additions and 22 deletions
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56
src/pya/pya/pya.cc
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@ -222,6 +222,8 @@ PythonInterpreter::PythonInterpreter (bool embedded)
// If set, use $KLAYOUT_PYTHONHOME to initialize the path. // If set, use $KLAYOUT_PYTHONHOME to initialize the path.
// Otherwise there may be some conflict between external installations and KLayout. // Otherwise there may be some conflict between external installations and KLayout.
bool has_klayout_pythonhome = false;
// Python is not easily convinced to use an external path properly. // Python is not easily convinced to use an external path properly.
// So we simply redirect PYTHONHOME // So we simply redirect PYTHONHOME
std::string pythonhome_name ("PYTHONHOME"); std::string pythonhome_name ("PYTHONHOME");
@ -230,6 +232,7 @@ PythonInterpreter::PythonInterpreter (bool embedded)
tl::unset_env (pythonhome_name); tl::unset_env (pythonhome_name);
} }
if (tl::has_env (klayout_pythonhome_name)) { if (tl::has_env (klayout_pythonhome_name)) {
has_klayout_pythonhome = true;
tl::set_env (pythonhome_name, tl::get_env (klayout_pythonhome_name)); tl::set_env (pythonhome_name, tl::get_env (klayout_pythonhome_name));
} }
@ -237,6 +240,22 @@ PythonInterpreter::PythonInterpreter (bool embedded)
tl_assert (sizeof (wchar_t) == 2); tl_assert (sizeof (wchar_t) == 2);
std::string inst_dir;
wchar_t buffer[MAX_PATH];
int len;
if ((len = GetModuleFileNameW (NULL, buffer, MAX_PATH)) > 0) {
inst_dir = tl::absolute_path (tl::to_string (std::wstring (buffer, len)));
}
if (! has_klayout_pythonhome) {
// Use our own installation path for PYTHOHOME unless given
Py_SetPythonHome (tl::to_wstring (inst_dir).c_str ());
}
if (! has_klayout_pythonpath) { if (! has_klayout_pythonpath) {
// If present, read the paths from a file in INST_PATH/.python-paths.txt. // If present, read the paths from a file in INST_PATH/.python-paths.txt.
@ -247,34 +266,27 @@ PythonInterpreter::PythonInterpreter (bool embedded)
std::string path; std::string path;
wchar_t buffer[MAX_PATH]; std::string path_file = tl::combine_path (inst_dir, ".python-paths.txt");
int len; if (tl::file_exists (path_file)) {
if ((len = GetModuleFileNameW (NULL, buffer, MAX_PATH)) > 0) {
std::string inst_dir = tl::absolute_path (tl::to_string (std::wstring (buffer, len))); tl::log << tl::to_string (tr ("Reading Python path from ")) << path_file;
std::string path_file = tl::combine_path (inst_dir, ".python-paths.txt");
if (tl::file_exists (path_file)) {
tl::log << tl::to_string (tr ("Reading Python path from ")) << path_file; tl::InputStream path_file_stream (path_file);
std::string path_file_text = path_file_stream.read_all ();
tl::InputStream path_file_stream (path_file); tl::Eval eval;
std::string path_file_text = path_file_stream.read_all (); eval.set_global_var ("inst_path", tl::Variant (inst_dir));
tl::Expression ex;
eval.parse (ex, path_file_text.c_str ());
tl::Variant v = ex.execute ();
tl::Eval eval; if (v.is_list ()) {
eval.set_global_var ("inst_path", tl::Variant (inst_dir)); for (tl::Variant::iterator i = v.begin (); i != v.end (); ++i) {
tl::Expression ex; if (! path.empty ()) {
eval.parse (ex, path_file_text.c_str ()); path += ";";
tl::Variant v = ex.execute ();
if (v.is_list ()) {
for (tl::Variant::iterator i = v.begin (); i != v.end (); ++i) {
if (! path.empty ()) {
path += ";";
}
path += i->to_string ();
} }
path += i->to_string ();
} }
} }
} }