Add clang 20

Author: gracicot

.github/workflows/all-os.yml

@@ -41,7 +41,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        clang: [16, 17, 18, 19]
+        clang: [16, 17, 18, 19, 20]
         cxx: [20, 23]
         exclude:
           - clang: 16

flake.lock

@@ -21,9 +21,9 @@
           mkShell = pkgs.mkShell.override { inherit stdenv; };
         in mkShell {
             nativeBuildInputs = with pkgs; [
-              llvmPackages_19.llvm
-              llvmPackages_19.clang-tools
-              llvmPackages_19.lldb
+              llvmPackages_20.llvm
+              llvmPackages_20.clang-tools
+              llvmPackages_20.lldb
             ];
             buildInputs = with pkgs; [
               cmake
@@ -59,14 +59,15 @@
         let
           pkgs = nixpkgsFor.${system};
         in {
-          default = makeShell { inherit pkgs; stdenv = pkgs.llvmPackages_19.stdenv; };
+          default = makeShell { inherit pkgs; stdenv = pkgs.llvmPackages_20.stdenv; };
           ci-clang13 = makeShell { inherit pkgs; stdenv = pkgs.llvmPackages_13.libcxxStdenv; };
           ci-clang14 = makeShell { inherit pkgs; stdenv = pkgs.llvmPackages_14.libcxxStdenv; };
           ci-clang15 = makeShell { inherit pkgs; stdenv = pkgs.llvmPackages_15.libcxxStdenv; };
           ci-clang16 = makeShell { inherit pkgs; stdenv = pkgs.llvmPackages_16.stdenv; };
           ci-clang17 = makeShell { inherit pkgs; stdenv = pkgs.llvmPackages_17.stdenv; };
           ci-clang18 = makeShell { inherit pkgs; stdenv = pkgs.llvmPackages_18.stdenv; };
           ci-clang19 = makeShell { inherit pkgs; stdenv = pkgs.llvmPackages_19.stdenv; };
+          ci-clang20 = makeShell { inherit pkgs; stdenv = pkgs.llvmPackages_20.stdenv; };
           ci-gcc11 = makeShell { inherit pkgs; stdenv = pkgs.gcc11Stdenv; };
           ci-gcc12 = makeShell { inherit pkgs; stdenv = pkgs.gcc12Stdenv; };
           ci-gcc13 = makeShell { inherit pkgs; stdenv = pkgs.gcc13Stdenv; };