Removing pathconfig warnings, defaulting the python path to include the local copy of the standard library. This allows for this package to be used in build steps easily. Note that it may be better to point the prefix paths to the standard library as then we don't need to suppress the pathconfig warnings, but that would require copying the directory into the expected python3.11 directory which isn't straight forward to do as part of the build as we can't use lazy paths as flags.

Author: zig-robotics

Modules/main.c

@@ -51,6 +51,7 @@ pymain_init(const _PyArgv *args)
 
     PyConfig config;
     PyConfig_InitPythonConfig(&config);
+    config.pathconfig_warnings = 0;
 
     /* pass NULL as the config: config is read from command line arguments,
        environment variables, configuration files */

build.zig

@@ -814,7 +814,7 @@ pub fn build(b: *std.Build) void {
         "-fvisibility=hidden",
         "-DPy_BUILD_CORE",
 
-        "-DPYTHONPATH=\"\"",
+        std.fmt.allocPrint(b.allocator, "-DPYTHONPATH=\"{s}\"", .{b.path("Lib").getPath(b)}) catch @panic("OOM"),
         "-DPREFIX=\"/usr/local\"",
         "-DEXEC_PREFIX=\"/usr/local\"",
         "-DVERSION=\"3.11\"",