Add scipy and dependencies for Kalico hx711s-new tap filtering

.github/workflows/build.yml

@@ -65,6 +65,9 @@ jobs:
       - name: Build image
         run: |
           source poky/oe-init-build-env build
+          # Limit parallelism to prevent bitbake server timeout on the CI runner
+          echo 'BB_NUMBER_THREADS = "4"' >> conf/local.conf
+          echo 'PARALLEL_MAKE = "-j4"' >> conf/local.conf
           bitbake opencentauri-upgrade
 
       - name: Upload build artifacts (SWU only)

meta-opencentauri/classes/strip-python-sos.bbclass

@@ -0,0 +1,10 @@
+# Strip debug info from every .so under site-packages.
+# Drops ~30% off the numpy/scipy footprint with no runtime cost.
+do_install:append() {
+    if [ -d ${D}${PYTHON_SITEPACKAGES_DIR} ]; then
+        find ${D}${PYTHON_SITEPACKAGES_DIR} -name '*.so' -type f \
+            -exec ${HOST_PREFIX}strip --strip-unneeded {} \;
+        find ${D}${PYTHON_SITEPACKAGES_DIR} -name '*.so' -type f \
+            -exec ${TARGET_PREFIX}strip --strip-unneeded {} \;
+    fi
+}

meta-opencentauri/conf/distro/cosmos.conf

@@ -12,3 +12,8 @@ DISTRO_FEATURES:remove = "ptest"
 DISTRO_FEATURES:append = " rust"
 RUST_VERSION = "1.92.0"
 CARGO_VERSION = "1.92.0"
+
+# Enable Fortran compiler for scipy cross-compilation
+FORTRAN:forcevariable = ",fortran"
+BUILD_Fortran:forcevariable = ",fortran"
+HOSTTOOLS += "gfortran"

meta-opencentauri/files/numpy-minimal-lib/__init__.py

@@ -0,0 +1,9 @@
+"""Minimal numpy.lib replacement — only function_base (kaiser, interp).
+
+All other lib/ submodules (index_tricks, histograms, npyio, type_check, etc.)
+are never used by kalico and have been removed to save space.
+"""
+from . import function_base
+from .function_base import *
+
+__all__ = function_base.__all__

meta-opencentauri/files/numpy-minimal-lib/_utils.py

@@ -0,0 +1,8 @@
+"""Minimal _utils stub — only set_module needed by function_base."""
+def set_module(module):
+    """Private decorator for overriding __module__ on a function or class."""
+    def decorator(func):
+        if module is not None:
+            func.__module__ = module
+        return func
+    return decorator

meta-opencentauri/files/numpy-minimal-lib/_version.py

@@ -0,0 +1,2 @@
+"""Minimal _version stub for numpy.lib."""
+__all__ = []