Remvoe CUDA requirement from pypy wheel build

.github/vcpkg-overlays/libaec/portfile.cmake

@@ -0,0 +1,64 @@
+# Overlay of the upstream vcpkg `libaec` port, identical to the port at our
+# pinned vcpkg baseline except for where the sources come from.
+#
+# Upstream fetches from https://gitlab.dkrz.de/k202009/libaec. That host now
+# answers every request to its /-/archive/ tarball endpoint with a bare
+# nginx "429 Too Many Requests" (no Retry-After), so any cold vcpkg build
+# fails there and no amount of retrying gets past it. The repository web
+# pages still serve 200 — it is specifically the archive endpoint that is
+# rate limited.
+#
+# libaec reaches us only as a transitive dependency: vtk -> hdf5 -> (szip
+# feature) -> libaec, so it cannot simply be dropped.
+#
+# MathisRosenhauer/libaec on GitHub is the upstream author's mirror of the
+# same project. The SHA512 below is of GitHub's v1.1.6 tarball, which is a
+# different archive from GitLab's and therefore has a different hash than
+# upstream's portfile records.
+#
+# Remove this overlay once gitlab.dkrz.de serves archives again.
+
+vcpkg_from_github(
+  OUT_SOURCE_PATH
+  SOURCE_PATH
+  REPO
+  MathisRosenhauer/libaec
+  REF
+  "v${VERSION}"
+  SHA512
+  76df7501d1b7d91a43b525ba828f092f18d83f8ab09a9331e5758f93942a9758ad580baca8f9316b92a98639bde2e23cacbc2f33f52d0dd98ce7efe412cf43cd
+  HEAD_REF
+  master)
+
+string(COMPARE EQUAL "${VCPKG_LIBRARY_LINKAGE}" "static" BUILD_STATIC)
+
+vcpkg_cmake_configure(SOURCE_PATH "${SOURCE_PATH}" OPTIONS -DBUILD_STATIC_LIBS=${BUILD_STATIC}
+                      -Dlibaec_INSTALL_CMAKEDIR=share/${PORT})
+vcpkg_cmake_install()
+vcpkg_copy_pdbs()
+vcpkg_cmake_config_fixup()
+vcpkg_replace_string("${CURRENT_PACKAGES_DIR}/share/libaec/libaec-config.cmake"
+                     "if(libaec_USE_STATIC_LIBS)" "if(\"${BUILD_STATIC}\") # forced by vcpkg")
+
+# Compatibility with user's CMake < 3.18 (vcpkg claims support for >= 3.16):
+# Make imported targets global so that libaec-config.cmake can create ALIAS targets.
+set(_target_file "libaec_shared-targets")
+if(BUILD_STATIC)
+  set(_target_file "libaec_static-targets")
+endif()
+file(READ "${CURRENT_PACKAGES_DIR}/share/libaec/${_target_file}.cmake" libaec_targets)
+string(REGEX REPLACE " (SHARED|STATIC) IMPORTED" " \\1 IMPORTED \${libaec_maybe_global}"
+                     libaec_targets "${libaec_targets}")
+file(
+  WRITE "${CURRENT_PACKAGES_DIR}/share/libaec/${_target_file}.cmake"
+  "set(libaec_maybe_global \"\")
+if(CMAKE_VERSION VERSION_LESS 3.18)
+    set(libaec_maybe_global \"GLOBAL\")
+endif()
+${libaec_targets}
+")
+
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include")
+
+file(INSTALL "${CURRENT_PORT_DIR}/usage" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
+vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/LICENSE.txt")

.github/vcpkg-overlays/libaec/usage

@@ -0,0 +1,7 @@
+libaec provides CMake targets:
+
+  find_package(libaec CONFIG REQUIRED)
+  # libaec API
+  target_link_libraries(main PRIVATE libaec::aec)
+  # szip compatible API
+  target_link_libraries(main PRIVATE libaec::sz)

.github/vcpkg-overlays/libaec/vcpkg.json

@@ -0,0 +1,17 @@
+{
+  "name": "libaec",
+  "version": "1.1.6",
+  "description": "Adaptive Entropy Coding library",
+  "homepage": "https://github.com/MathisRosenhauer/libaec",
+  "license": "BSD-2-Clause",
+  "dependencies": [
+    {
+      "name": "vcpkg-cmake",
+      "host": true
+    },
+    {
+      "name": "vcpkg-cmake-config",
+      "host": true
+    }
+  ]
+}

.github/workflows/build.yml

@@ -78,7 +78,11 @@ jobs:
         if: ${{ matrix.os == 'windows-latest' && steps.vcpkg-installed-cache.outputs.cache-hit != 'true' }}
         shell: pwsh
         run: |
-          ./vcpkg/vcpkg install --triplet x64-windows
+          # The libaec overlay sources that port from GitHub instead of
+          # gitlab.dkrz.de, whose archive endpoint returns 429 to everyone.
+          # See .github/vcpkg-overlays/libaec/portfile.cmake.
+          ./vcpkg/vcpkg install --triplet x64-windows `
+            --overlay-ports="${{ github.workspace }}/.github/vcpkg-overlays"
 
       - name: 🏗️ Compile (Windows)
         if: ${{ matrix.os == 'windows-latest' }}

.github/workflows/python.yml

@@ -75,7 +75,11 @@ jobs:
         if: ${{ matrix.os == 'windows-latest' && steps.vcpkg-installed-cache.outputs.cache-hit != 'true' }}
         shell: pwsh
         run: |
-          ./vcpkg/vcpkg install --triplet x64-windows
+          # The libaec overlay sources that port from GitHub instead of
+          # gitlab.dkrz.de, whose archive endpoint returns 429 to everyone.
+          # See .github/vcpkg-overlays/libaec/portfile.cmake.
+          ./vcpkg/vcpkg install --triplet x64-windows `
+            --overlay-ports="${{ github.workspace }}/.github/vcpkg-overlays"
 
       - name: 🐍 Build and check Python Module (Windows)
         if: ${{ matrix.os == 'windows-latest' }}
@@ -153,24 +157,21 @@ jobs:
         env:
           CIBW_SKIP: ${{ matrix.skip }}
           CIBW_MANYLINUX_X86_64_IMAGE: ghcr.io/viennatools/vienna-builder:cuda-python
-          CIBW_REPAIR_WHEEL_COMMAND_LINUX: >-
-            auditwheel repair
-            --exclude libcuda.so.1
-            --exclude libcudart.so.12
-            --exclude libcusparse.so.12
-            --exclude libnvJitLink.so.12
-            -w {dest_dir} {wheel}
           CIBW_TEST_COMMAND: >-
             python -c "import viennals;
             print(viennals.__file__);
             print(viennals.d2);
             print(viennals.d3)"
+          # VIENNALS_USE_GPU is deliberately OFF for wheels: it puts hard
+          # DT_NEEDED entries for libcudart/libcusparse on _core.so, and those
+          # are far too large to vendor (libcusparse alone is >160 MB, over the
+          # PyPI file limit). The wheel would then fail to import on any machine
+          # without a CUDA toolkit. GPU users build from source with
+          # -DVIENNALS_USE_GPU=ON.
           CIBW_CONFIG_SETTINGS: >-
             cmake.define.VIENNALS_PACKAGE_PYTHON=ON
             cmake.define.VIENNALS_IS_CI=ON
             cmake.define.VIENNALS_VTK_RENDERING=ON
-            cmake.define.VIENNALS_USE_GPU=ON
-            cmake.define.VIENNACORE_LINK_CUDA_DRIVER=OFF
             cmake.define.USE_IPO=OFF
 
       - name: 🏗️ Build Wheels (Other)