Remove support for macOS (unmaintained)

.github/workflows/ci.yml

@@ -59,4 +59,20 @@ jobs:
                 build_py_project_in_venv
                 build_docs
 
+    downstream_tests:
+        strategy:
+            matrix:
+                downstream_project: [loopy]
+        name: Tests for downstream project ${{ matrix.downstream_project }}
+        runs-on: ubuntu-latest
+        steps:
+        -   uses: actions/checkout@v2
+        -   name: "Main Script"
+            env:
+                DOWNSTREAM_PROJECT: ${{ matrix.downstream_project }}
+            run: |
+                curl -L -O https://tiker.net/ci-support-v0
+                . ./ci-support-v0
+                test_downstream "$DOWNSTREAM_PROJECT"
+
 # vim: sw=4

codepy/toolchain.py

@@ -457,22 +457,11 @@ def guess_toolchain():
             if sys.maxsize == 0x7fffffff:
                 kwargs["cflags"].extend(["-arch", "i386"])
 
-        return GCCToolchain(**kwargs)
-    elif "Apple LLVM" in version and "clang" in version:
-        if "-Wstrict-prototypes" in kwargs["cflags"]:
-            kwargs["cflags"].remove("-Wstrict-prototypes")
-        if "darwin" in version:
-            # Are we running in 32-bit mode?
-            # The python interpreter may have been compiled as a Fat binary
-            # So we need to check explicitly how we're running
-            # And update the cflags accordingly
-            import sys
-            if sys.maxsize == 0x7fffffff:
-                kwargs["cflags"].extend(["-arch", "i386"])
-
         return GCCToolchain(**kwargs)
     else:
-        raise ToolchainGuessError("unknown compiler")
+        raise ToolchainGuessError(
+                "Unable to determine compiler. Tried running "
+                f"'{kwargs['cc']} --version' and failed.")
 
 
 def guess_nvcc_toolchain():