Reapply "Use libcompiler-rt and remove hack"

This reverts commit 1ae77a5.

Author: crusaderky

Tools/pixi-packages/build.sh

@@ -50,9 +50,3 @@ touch configure-done
 
 make -j"${CPU_COUNT}" install
 ln -sf "${PREFIX}/bin/python3" "${PREFIX}/bin/python"
-
-# https://github.com/prefix-dev/rattler-build/issues/2012
-if [[ ${OSTYPE} == "darwin"* ]]; then
-    cp "${BUILD_PREFIX}/lib/clang/21/lib/darwin/libclang_rt.asan_osx_dynamic.dylib" "${PREFIX}/lib/"
-    cp "${BUILD_PREFIX}/lib/clang/21/lib/darwin/libclang_rt.tsan_osx_dynamic.dylib" "${PREFIX}/lib/"
-fi

Tools/pixi-packages/default/recipe.yaml

@@ -70,6 +70,9 @@ outputs:
       - if: c_compiler == "gcc" and "san" in variant
         then:
           - libsanitizer
+      - if: c_compiler == "clang" and "san" in variant
+        then:
+          - libcompiler-rt
 
     ignore_run_exports:
       from_package: