diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 52eb04b..f5da4a9 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -12,11 +12,19 @@ on:
 jobs:
   main:
 
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-latest
+            conda_env_file: dev-linux-64.yaml
+          - os: macos-latest
+            conda_env_file: dev-osx-64.yaml
+
+    runs-on: ${{ matrix.os }}
     timeout-minutes: 20
 
     concurrency:
-      group: ci-main-${{ github.ref }}
+      group: ci-${{ matrix.os }}-main-${{ github.ref }}
       cancel-in-progress: true
 
     defaults:
@@ -37,11 +45,16 @@ jobs:
         channels: conda-forge,nodefaults
         channel-priority: true
         activate-environment: arx
-        environment-file: conda/dev-linux-64.yaml
+        environment-file: conda/${{ matrix.conda_env_file }}
 
-    - name: build
+    - name: Build on Linux
+      if: ${{ matrix.os == 'ubuntu-latest' }}
       run: make build-dev CLEAN=1
 
+    - name: Build on OSX
+      if: ${{ matrix.os == 'macos-latest' }}
+      run: make build-dev CLEAN=1 CC=clang-cl
+
     - name: test flags
       run: |
         build/arx --version
diff --git a/Makefile b/Makefile
index 6a2dedf..2c04e7d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # build
 CLEAN=0
-CXX=clang++
-CC=clang
+CXX:=clang++
+CC:=clang
 
 ARGS:=
 
diff --git a/conda/dev-linux-64.yaml b/conda/dev-linux-64.yaml
index f80790a..3d53b44 100644
--- a/conda/dev-linux-64.yaml
+++ b/conda/dev-linux-64.yaml
@@ -14,7 +14,6 @@ dependencies:
 - gdb
 - glib
 - libclang-cpp 15.*
-# - libcxx 15.*
 - libstdcxx-devel_linux-64
 - libstdcxx-ng
 - lld 15.*
diff --git a/conda/dev-osx-64.yaml b/conda/dev-osx-64.yaml
new file mode 100644
index 0000000..56e4c71
--- /dev/null
+++ b/conda/dev-osx-64.yaml
@@ -0,0 +1,40 @@
+name: arx
+channels:
+- nodefaults
+- conda-forge
+dependencies:
+# build
+- clangdev 14.*
+- clangxx 14.*
+- cmake
+- compiler-rt 14.*
+- compilers
+# it would be nice to replace that by lldb, but
+# the latest version on conda-forge is very old.
+- gdb
+- glib
+- libclang-cpp 14.*
+- lld 14.*
+- llvmdev 14.*
+- make
+- meson
+- ninja
+- pkg-config
+# run
+- arrow-c-glib 10.*
+- arrow-cpp 10.*
+- cli11
+- glog
+# dev
+- cppcheck
+- docker-compose
+- doxygen
+- gmock
+- gtest
+# - include-what-you-use >=0.18
+- jupyterlab
+- lcov
+- mkdocs
+- mkdocs-jupyter
+- nodejs
+- pre-commit
diff --git a/meson.build b/meson.build
index c229320..c11eeb4 100644
--- a/meson.build
+++ b/meson.build
@@ -11,9 +11,22 @@ PROJECT_PATH = meson.source_root()
 
 cxx = meson.get_compiler('cpp')
 
+r  = run_command('echo', '$OSTYPE', check: true)
+operating_system = r.stdout().strip()
+
+# note: probably not a good approach but we should have both
+#       OS with the same pinning soon
+
+if 'Linux' in operating_system
+  llvm_version = '>=15.0.0'
+else
+  # osx
+  llvm_version = '>=14.0.0'
+endif
+
 deps = [
   dependency('arrow'),
-  dependency('llvm', version : '>=14.0.0'),
+  dependency('llvm', version : llvm_version),
   dependency('CLI11'),
   dependency('threads'),
   dependency('glog'),