Use one conda env and export absolute paths

Author: Giorgis Georgakoudis

buildscripts/cibuildwheel/setup-miniconda3.sh

@@ -23,10 +23,6 @@ echo "Miniconda installed"
 source "_stage/miniconda3/bin/activate" base
 export CONDA_PLUGINS_AUTO_ACCEPT_TOS=true
 
-# Create llvmdev environment and install llvmdev ${LLVM_VERSION}.
+# Create clangdev ${LLVM_VERSION}
 echo "Installing manylinux llvmdev ${LLVM_VERSION}..."
-conda create -n llvmdev-${LLVM_VERSION} -c conda-forge -y llvmdev=${LLVM_VERSION}
-
-# Create clang environment and install clang ${LLVM_VERSION}.
-echo "Installing clang ${LLVM_VERSION}..."
-conda create -n clang-${LLVM_VERSION} -c conda-forge -y clang=${LLVM_VERSION}
+conda create -n llvmdev-${LLVM_VERSION} -c conda-forge -q -y clangdev=${LLVM_VERSION} llvmdev=${LLVM_VERSION}

pyproject.toml

@@ -66,7 +66,7 @@ before-all = [
 ]
 
 [tool.cibuildwheel.environment]
-LLVM_DIR = "_stage/miniconda3/envs/llvmdev-${LLVM_VERSION}"
-CLANG_TOOL = "_stage/miniconda3/envs/clang-${LLVM_VERSION}/bin/clang"
+LLVM_DIR = "${PWD}/_stage/miniconda3/envs/llvmdev-${LLVM_VERSION}"
+PATH = "${PWD}/_stage/miniconda3/envs/llvmdev-${LLVM_VERSION}/bin:${PATH}"
 USE_CXX11_ABI = "1"
 PIP_NO_INPUT = "1"