CI: update to work with nix

Author: Titaniumtown

.github/workflows/main.yml

@@ -1,117 +1,26 @@
-name: BuildAll
+name: Build
 
-on: [push, pull_request]
-
-env:
-  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
-  BUILD_TYPE: Release
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
 
 jobs:
-  build_halide:
-    name: build_halide-${{matrix.target_os}}-${{matrix.target_arch}}-${{matrix.target_bits}}
-    runs-on: ${{matrix.host_os}}
-    env:
-      CC: ${{matrix.cc}}
-      CXX: ${{matrix.cxx}}
-      LD: ${{matrix.ld}}
-      THIRDPARTY_DIR: ${{github.workspace}}/3rdparty
-      HALIDE_BUILD_DIR: ${{github.workspace}}/3rdparty/Halide-10.0.0/build
-      HALIDE_INSTALL_DIR: ${{github.workspace}}/3rdparty/Halide-10.0.0/install
-    strategy:
-      matrix:
-        target_arch: [x86, arm]
-        target_bits: [32, 64]
-        target_os: [linux]
-        include:
-          - target_os: linux
-            host_os: ubuntu-18.04
-            cc: clang-10
-            cxx: clang++-10
-            ld: ld
-
+  build:
+    runs-on: ubuntu-latest
     steps:
-      - name: Configure Ubuntu/linux target os
-        if: startsWith(matrix.host_os, 'ubuntu')
-        shell: bash
-        run: |
-          sudo apt-get update
-          sudo apt install clang-10 llvm-10 libclang-10-dev
-          sudo apt purge clang-9 llvm-9 clang-8 llvm-8 clang-6.0 llvm-6.0
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
 
-      - name: Download Halide
-        run: |
-          mkdir -p ${THIRDPARTY_DIR} && cd ${THIRDPARTY_DIR}
-          wget https://github.com/halide/Halide/archive/v10.0.0.zip
-          unzip -o v10.0.0.zip
-      - name: Build Halide-${{matrix.target_os}}-${{matrix.target_arch}}-${{matrix.target_bits}}
-        working-directory: ${{ github.workspace }}/3rdparty
-        run: |
-          mkdir -p ${HALIDE_BUILD_DIR} && cd ${HALIDE_BUILD_DIR}
-          cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=${HALIDE_INSTALL_DIR} \
-              -DWITH_TESTS=OFF -DWITH_APPS=OFF -DWITH_TUTORIALS=OFF \
-              -DWITH_ARM=OFF -DWITH_AARCH64=OFF -DWITH_HEXAGON=OFF -DWITH_MIPS=OFF -DWITH_POWERPC=OFF -DWITH_NVPTX=OFF -DWITH_RISCV=OFF \
-              ..
-          make -j 8 install
-      - name: Upload Install Directory
-        uses: actions/upload-artifact@v1
+      - uses: cachix/install-nix-action@v30
         with:
-          name: halide-install
-          path: ${{ github.workspace }}/3rdparty/Halide-10.0.0/install/
-
-  build_all:
-    needs: build_halide
-    name: build_all-${{matrix.target_os}}-${{matrix.target_arch}}-${{matrix.target_bits}}
-    runs-on: ${{matrix.host_os}}
-    env:
-      BUILD_DIR: ${{github.workspace}}/build
-      HALIDE_DISTRIB_DIR: ${{github.workspace}}/3rdparty/Halide
-      CC: ${{matrix.cc}}
-      CXX: ${{matrix.cxx}}
-      LD: ${{matrix.ld}}
-      THIRDPARTY_DIR: ${{github.workspace}}/3rdparty
-    strategy:
-      matrix:
-        target_arch: [x86, arm]
-        target_bits: [32, 64]
-        target_os: [linux]
-        include:
-          - target_os: linux
-            host_os: ubuntu-18.04
-            cc: clang
-            cxx: clang++
-            ld: ld
+          nix_path: nixpkgs=channel:nixos-25.11
 
-    steps:
-      - uses: actions/checkout@v1
-
-      - name: Download Halide
-        uses: actions/download-artifact@v1
+      - uses: cachix/cachix-action@v15
         with:
-          name: halide-install
-          path: ${{github.workspace}}/3rdparty/Halide
-
-      - name: List 3rdparty
-        run: |
-          ls -lha ${{github.workspace}}/3rdparty
-          ls -lha ${HALIDE_DISTRIB_DIR}
-      - name: Install Dependencies
-        run: sudo apt update && sudo apt install -y libtiff-dev libraw-dev libpng-dev libjpeg-dev zlib1g-dev
+          name: devenv
 
-      - name: Configure CMake
-        shell: bash
-        working-directory: ${{github.workspace}}
-        run: |
-          mkdir -p ${BUILD_DIR} && cd ${BUILD_DIR}
-          cmake -DHALIDE_DISTRIB_DIR=${HALIDE_DISTRIB_DIR} -DCMAKE_BUILD_TYPE=$BUILD_TYPE ..
       - name: Build
-        shell: bash
-        working-directory: ${{github.workspace}}
-        run: cd ${BUILD_DIR} && make -j 8 all
+        run: nix build -L
 
-#      - name: Test
-#        working-directory: ${{runner.workspace}}/build
-#        shell: bash
-#        # Execute tests defined by the CMake configuration.
-#        # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
-#        run: ctest -C $BUILD_TYPE
+      - name: Check
+        run: nix flake check