Simplify CI script

.github/workflows/ci.yml

@@ -14,43 +14,33 @@ jobs:
     name: ${{ matrix.cxx }} ${{ matrix.features }}
     steps:
       - uses: actions/checkout@v2
-      - name: Set up environment
-        run: |
-          echo 'CXX=${{ matrix.cxx }}' >> $GITHUB_ENV
-          echo 'CXXFLAGS=-Wall -Wextra -pedantic' >> $GITHUB_ENV  # XXX: Add -Werror
-          echo 'LDFLAGS=' >> $GITHUB_ENV
-          echo 'SDL_AUDIODRIVER=disk' >> $GITHUB_ENV
-          echo 'SDL_VIDEODRIVER=x11' >> $GITHUB_ENV
-          echo 'DISPLAY=:99.0' >> $GITHUB_ENV
-      - name: Set up environment (flags)
-        if: ${{ matrix.xxx == 'clang++' }}
-        # there are explicit self-assignment tests
-        run: echo "CXXFLAGS=$CXXFLAGS -Wno-self-assign-overloaded" >> $GITHUB_ENV
-      - name: Set up environment (coverage)
-        if: ${{ contains(matrix.features, 'coverage') }}
-        run: |
-          echo "CXXFLAGS=$CXXFLAGS --coverage" >> $GITHUB_ENV
-          echo "LDFLAGS=$LDFLAGS --coverage" >> $GITHUB_ENV
-      - name: Set up environment (optional libs)
-        if: ${{ contains(matrix.features, 'nooptlibs') }}
-        run: echo "CMAKE_ARGS=$CMAKE_ARGS -DSDL2PP_WITH_IMAGE=NO -DSDL2PP_WITH_MIXER=NO -DSDL2PP_WITH_TTF=NO" >> $GITHUB_ENV
-      - name: Set up environment (static build)
-        if: ${{ contains(matrix.features, 'static') }}
-        run: echo "CMAKE_ARGS=$CMAKE_ARGS -DSDL2PP_STATIC=YES" >> $GITHUB_ENV
 
       - name: Install dependencies
+        env:
+          DEBIAN_FRONTEND: noninteractive
         run: |
-          export DEBIAN_FRONTEND=noninteractive
           apt-get update -qq
-          apt-get install -yqq --no-install-recommends build-essential clang cmake libsdl2-dev cppcheck doxygen graphviz xvfb
+          apt-get install -yqq --no-install-recommends build-essential clang cmake libsdl2-dev cppcheck doxygen graphviz xvfb curl
-      - name: Install dependencies (optional libs)
+          if [ ${{ !contains(matrix.features, 'nooptlibs') }} = true ]; then
-        if: ${{ !contains(matrix.features, 'nooptlibs') }}
+            apt-get install -qq --no-install-recommends libsdl2-image-dev libsdl2-ttf-dev libsdl2-mixer-dev
-        run: apt-get install -qq libsdl2-image-dev libsdl2-ttf-dev libsdl2-mixer-dev
+          fi
-      - name: Install dependencies (coverage)
+          if [ ${{ contains(matrix.features, 'coverage') }} = true ]; then
-        if: ${{ contains(matrix.features, 'coverage') }}
+            apt-get install -qq --no-install-recommends python3-pip git
+            pip install --user pyyaml cpp-coveralls
+          fi
+
+      - name: Set up environment
         run: |
-          apt-get install -yqq --no-install-recommends python3-pip git curl
+          curl --insecure https://raw.githubusercontent.com/AMDmi3/github_env/c8cc83d/github_env.py > e; chmod 755 e
-          pip install --user pyyaml cpp-coveralls
+          ./e 'CXX=${{ matrix.cxx }}'
+          ./e 'CXXFLAGS=-Wall -Wextra -pedantic' # XXX: Add -Werror
+          ./e 'SDL_AUDIODRIVER=disk'
+          ./e 'SDL_VIDEODRIVER=x11'
+          ./e 'DISPLAY=:99.0'
+          ./e --if ${{ matrix.xxx == 'clang++' }} 'CXXFLAGS+=-Wno-self-assign-overloaded'  # explicit self-assignment tests
+          ./e --if ${{ contains(matrix.features, 'coverage') }} 'CXXFLAGS+=--coverage' 'LDFLAGS+=--coverage'
+          ./e --if ${{ contains(matrix.features, 'nooptlibs') }} 'CMAKE_ARGS+=-DSDL2PP_WITH_IMAGE=NO -DSDL2PP_WITH_MIXER=NO -DSDL2PP_WITH_TTF=NO'
+          ./e --if ${{ contains(matrix.features, 'static') }} 'CMAKE_ARGS+=-DSDL2PP_STATIC=YES'
 
       - name: Set up environment for live tests
         run: |