fix(gnu.org/gcc): add Debian multi-arch triplet symlinks (addresses #8423)

projects/gnu.org/gcc/package.yml

@@ -164,6 +164,23 @@ build:
       if: darwin/x86-64
       working-directory: ${{prefix}}/lib
 
+    # Many Linux build systems (autoconf, distutils/setuptools, pip
+    # build backends) probe for the Debian-style multi-arch triplet
+    # binary names ($arch-linux-gnu-gcc, etc.) before falling back to
+    # plain `gcc`. Without these, pip-install of C-extension Python
+    # wheels fails on Ubuntu/Debian rootfs even when gcc IS on PATH.
+    # See pkgxdev/pantry#8423.
+    - run: |
+        case "{{hw.arch}}" in
+          x86-64)  TRIPLET=x86_64-linux-gnu ;;
+          aarch64) TRIPLET=aarch64-linux-gnu ;;
+        esac
+        for tool in gcc g++ cpp c++ ar nm ranlib; do
+          [ -e "$tool" ] && ln -sf "$tool" "$TRIPLET-$tool"
+        done
+      if: linux
+      working-directory: ${{prefix}}/bin
+
   env:
     # Branch from the Darwin maintainer of GCC, with a few generic fixes and
     # Apple Silicon support, located at https://github.com/iains/gcc-12-branch