Test Emscripten 6.0.1 xbuildenv

.github/workflows/build.yml

@@ -32,6 +32,7 @@ env:
   CCACHE_DIR: /tmp/.ccache
   CCACHE_CACHE_NUMBER: 0
   FORCE_COLOR: 3
+  DEFAULT_CROSS_BUILD_ENV_URL: https://github.com/pyodide/pyodide-build-environment-nightly/releases/download/20260722-abi_2026_5/xbuildenv.tar.bz2
 
 jobs:
   check-scipy-test-trigger:

packages/healpy/meta.yaml

@@ -10,6 +10,7 @@ source:
     - patches/0001-build-no-binaries.patch
     - patches/0002-without-zlib-check-fortran.patch
     - patches/0003-install-path.patch
+    - patches/0004-disable-openmp.patch
 requirements:
   host:
     - libzlib

packages/healpy/patches/0004-disable-openmp.patch

@@ -0,0 +1,15 @@
+Emscripten 6 added OpenMP support, so autoconf's AC_OPENMP check now succeeds
+and healpix_cxx's configure appends -fopenmp to CFLAGS/CXXFLAGS. On Emscripten
+`-fopenmp` implies pthreads which is causes a link error.
+
+diff --git a/setup.py b/setup.py
+--- a/setup.py
++++ b/setup.py
+@@ -173,6 +173,7 @@
+                 "--disable-maintainer-mode",
+                 "--without-zlib-check",
+                 "--without-fortran",
++                "--disable-openmp",
+             ]
+
+             log.info("%s", " ".join(cmd))

packages/matplotlib/meta.yaml

@@ -15,7 +15,6 @@ source:
     - patches/0002-Hardcode-font-cache-path.patch
     - patches/0003-Pyodide-webagg-backend.patch
     - patches/0004-Fix-32bit-casting.patch
-    - patches/0005-Use-system-freetype.patch
 
 build:
   backend-flags: |