Env variables from variants.yaml are not set for staging outputs

For the following recipe, I get the output │ │ PKG_NAME:libgdal-core │ │ CONDA_BUILD_SYSROOT: │ │ PKG_NAME:libgdal-core │ │ CONDA_BUILD_SYSROOT:/opt/MacOSX11.0.sdk │ │ PKG_NAME:libgdal-core-devel │ │ CONDA_BUILD_SYSROOT:/opt/MacOSX11.0.sdk Note that CONDA_BUILD_SYSROOT is empty for the cache and the PKG_NAME is weirdly `libgdal-core` recipe.yaml ```YAML recipe: name: libgdal-split version: 3.21.3 outputs: - staging: name: core-build requirements: build: - ${{ compiler('cxx') }} build: script: build - package: name: libgdal-core inherit: core-build requirements: build: - ${{ compiler('cxx') }} build: script: build - package: name: libgdal-core-devel inherit: core-build requirements: build: - ${{ compiler('cxx') }} build: script: build ``` build.sh ```bash echo "PKG_NAME:${PKG_NAME}" echo "CONDA_BUILD_SYSROOT:${CONDA_BUILD_SYSROOT}" ``` variants.yaml ```YAML cxx_compiler: - clangxx_impl CONDA_BUILD_SYSROOT: - "/opt/MacOSX11.0.sdk" ```