fix(deb): move flavor suffix after version number in DEB filename (ver-flavor convention)

Author: peng.li24

.github/workflows/ci.yml

@@ -9,9 +9,9 @@
 #     Same API, pure <cmath> + C++ loops. Tests run with atol/rtol tolerance.
 #     No external math dependencies.
 #
-# DEB packaging:
-#   cmake -DNUMPYCPP_STD_ONLY=OFF → numpycpp-dev-bitexact-*.deb
-#   cmake -DNUMPYCPP_STD_ONLY=ON  → numpycpp-dev-std-*.deb
+# DEB packaging (flavor appears after version number in filename):
+#   cmake -DNUMPYCPP_STD_ONLY=OFF → numpycpp-dev-<ver>-bitexact-Linux.deb
+#   cmake -DNUMPYCPP_STD_ONLY=ON  → numpycpp-dev-<ver>-std-Linux.deb
 
 name: CI
 
@@ -123,13 +123,13 @@ jobs:
         run: |
           cmake -S . -B build_bitexact -DNUMPYCPP_STD_ONLY=OFF
           cmake --build build_bitexact --target deb
-          ls build_bitexact/*.deb
+          ls build_bitexact/numpycpp-dev-*-bitexact-*.deb
 
       - name: Build std DEB
         run: |
           cmake -S . -B build_std_deb -DNUMPYCPP_STD_ONLY=ON
           cmake --build build_std_deb --target deb
-          ls build_std_deb/*.deb
+          ls build_std_deb/numpycpp-dev-*-std-*.deb
 
       - name: Upload DEBs as artifacts
         uses: actions/upload-artifact@v4

CMakeLists.txt

@@ -79,9 +79,11 @@ install(DIRECTORY example/
 )
 
 # ---- CPack DEB packaging ----------------------------------------------------
-# Package name and description differ by backend:
-#   bitexact: numpycpp-dev-bitexact-<ver>-Linux.deb
-#   std:      numpycpp-dev-std-<ver>-Linux.deb
+# Package name and file name differ by backend flavor.
+# File naming: numpycpp-dev-<version>-<flavor>-Linux.deb
+#   bitexact: numpycpp-dev-1.21.2-bitexact-Linux.deb
+#   std:      numpycpp-dev-1.21.2-std-Linux.deb
+# Package name keeps the flavor so both DEBs can coexist on the same machine.
 if(NUMPYCPP_STD_ONLY)
     set(_NUMPYCPP_DEB_FLAVOR     "std")
     set(_NUMPYCPP_DEB_SUMMARY    "C++ numpy-API header-only library — pure std backend (perf-first)")
@@ -101,7 +103,7 @@ set(CPACK_DEBIAN_PACKAGE_MAINTAINER        "miaobyte")
 set(CPACK_DEBIAN_PACKAGE_SECTION           "libdevel")
 set(CPACK_DEBIAN_PACKAGE_PRIORITY          "optional")
 set(CPACK_DEBIAN_FILE_NAME
-    "numpycpp-dev-${_NUMPYCPP_DEB_FLAVOR}-${CPACK_PACKAGE_VERSION}-Linux.deb")
+    "numpycpp-dev-${CPACK_PACKAGE_VERSION}-${_NUMPYCPP_DEB_FLAVOR}-Linux.deb")
 set(CPACK_PACKAGING_INSTALL_PREFIX         "/usr")
 # Wipe the old include tree on install/upgrade so stale headers cannot accumulate.
 set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA     "${CMAKE_CURRENT_SOURCE_DIR}/cmake/preinst")

README.md

@@ -130,7 +130,7 @@ cmake -DNUMPYCPP_STD_ONLY=ON  ..   # std / performance-first backend
 | **Dot / matmul** | OpenBLAS ILP64 via `dlsym` | Pure C++ loops (auto-vectorised) |
 | **Precision vs numpy** | **IEEE 754 bit-identical** | 0–2 ULP (not bit-exact) |
 | **External deps** | libdl + numpy `.so` loaded | **None** — pure C++17 |
-| **DEB package** | `numpycpp-dev-bitexact-*.deb` | `numpycpp-dev-std-*.deb` |
+| **DEB package** | `numpycpp-dev-<ver>-bitexact-Linux.deb` | `numpycpp-dev-<ver>-std-Linux.deb` |
 | **cmake propagation** | `target_link_libraries(… dl)` | `target_compile_definitions(… NUMPYCPP_STD_ONLY)` |
 
 #### Compiler flags — bitexact backend (`NUMPYCPP_STD_ONLY=OFF`)