Fix/use correct compiler pixi/conda (#914)

* fix: Use the cxx-compiler package which will set the correct compiler for the platform, and setup the required environment for it to work as expected

* misc: update pixi versions in pipeline

Author: tony-p

Diff for: .github/workflows/pixi.yaml

@@ -13,9 +13,9 @@ jobs:
     steps:
       # Pixi is the tool used to create/manage conda environment
       - uses: actions/checkout@v3
-      - uses: prefix-dev/setup-pixi@v0.4.1
+      - uses: prefix-dev/setup-pixi@v0.8.1
         with:
-          pixi-version: v0.16.1
+          pixi-version: v0.40.3
       - name: Build
         run: pixi run build
       - name: Run tests

Diff for: cmake/FindZeroMQ.cmake

@@ -29,8 +29,6 @@ else (ZeroMQ_LIBRARIES AND ZeroMQ_INCLUDE_DIRS)
   find_path(ZeroMQ_INCLUDE_DIR
     NAMES
       zmq.h
-    HINTS
-    "$ENV{CONDA_PREFIX}/include"
     PATHS
       /usr/include
       /usr/local/include