diff --git a/.github/workflows/build-amd64.yml b/.github/workflows/build-amd64.yml
index 782b1b8..cacab5f 100644
--- a/.github/workflows/build-amd64.yml
+++ b/.github/workflows/build-amd64.yml
@@ -20,40 +20,41 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        clang-version: [ 19, 18, 17, 16, 15, 14, 13, 12.0.1, 12, 11, 10, 9, 8, 7 ]
+        # clang-version: [ 19, 18, 17, 16, 15, 14, 13, 12.0.1, 12, 11, 10, 9, 8, 7 ]
+        clang-version: [ 19 ]
         os: [ linux, macosx, windows ]
         include:
           - clang-version: 19
             release: llvm-project-19.1.0.src
-          - clang-version: 18
-            release: llvm-project-18.1.5.src
-          - clang-version: 17
-            release: llvm-project-17.0.4.src
-          - clang-version: 16
-            release: llvm-project-16.0.3.src
-          - clang-version: 15
-            release: llvm-project-15.0.2.src
-          - clang-version: 14
-            release: llvm-project-14.0.0.src
-          - clang-version: 13
-            release: llvm-project-13.0.0.src
-          - clang-version: 12.0.1
-            release: llvm-project-12.0.1.src
-          - clang-version: 12
-            release: llvm-project-12.0.0.src
-          - clang-version: 11
-            release: llvm-project-11.1.0.src
-          - clang-version: 10
-            release: llvm-project-10.0.1
-            extra-cmake-args: '-DLLVM_ENABLE_Z3_SOLVER=OFF'
-          - clang-version: 9
-            release: llvm-project-9.0.1
-            extra-cmake-args: '-DLLVM_ENABLE_Z3_SOLVER=OFF'
-          - clang-version: 8
-            release: llvm-project-8.0.1
-            extra-cmake-args: '-DCLANG_ANALYZER_ENABLE_Z3_SOLVER=OFF'
-          - clang-version: 7
-            release: llvm-project-7.1.0
+          # - clang-version: 18
+          #   release: llvm-project-18.1.5.src
+          # - clang-version: 17
+          #   release: llvm-project-17.0.4.src
+          # - clang-version: 16
+          #   release: llvm-project-16.0.3.src
+          # - clang-version: 15
+          #   release: llvm-project-15.0.2.src
+          # - clang-version: 14
+          #   release: llvm-project-14.0.0.src
+          # - clang-version: 13
+          #   release: llvm-project-13.0.0.src
+          # - clang-version: 12.0.1
+          #   release: llvm-project-12.0.1.src
+          # - clang-version: 12
+          #   release: llvm-project-12.0.0.src
+          # - clang-version: 11
+          #   release: llvm-project-11.1.0.src
+          # - clang-version: 10
+          #   release: llvm-project-10.0.1
+          #   extra-cmake-args: '-DLLVM_ENABLE_Z3_SOLVER=OFF'
+          # - clang-version: 9
+          #   release: llvm-project-9.0.1
+          #   extra-cmake-args: '-DLLVM_ENABLE_Z3_SOLVER=OFF'
+          # - clang-version: 8
+          #   release: llvm-project-8.0.1
+          #   extra-cmake-args: '-DCLANG_ANALYZER_ENABLE_Z3_SOLVER=OFF'
+          # - clang-version: 7
+          #   release: llvm-project-7.1.0
           - os: linux
             runner: ubuntu-22.04
             os-cmake-args: '-DLLVM_BUILD_STATIC=ON -DCMAKE_CXX_FLAGS="-s -flto" ${LINUX_CMAKE_ARGS}'
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a415184
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+venv
+.venv