llvm@13 fixes local M1 build, try on buildserver

haskell-crypto/cryptonite#372 (comment)

Author: supermario

.github/workflows/build-macos-arm64.yml

@@ -22,6 +22,6 @@ jobs:
       - name: Run distribution script
         run: |
           test -x "$(which ghcup)" && curl https://downloads.haskell.org/~ghcup/aarch64-apple-darwin-ghcup -o ~/.local/bin/ghcup && chmod a+x ~/.local/bin/ghcup
-          brew install llvm@12
+          brew install llvm@13
           cd distribution
           ./build-macos-arm64.sh

.github/workflows/build-macos-x86_64.yml

@@ -22,6 +22,5 @@ jobs:
       - name: Run distribution script
         run: |
           test -x "$(which ghcup)" && curl https://downloads.haskell.org/~ghcup/aarch64-apple-darwin-ghcup -o ~/.local/bin/ghcup && chmod a+x ~/.local/bin/ghcup
-          brew install llvm@12
           cd distribution
           ./build-macos-x86_64.sh

distribution/build-macos-arm64.sh

@@ -36,7 +36,7 @@ git submodule init && git submodule update
 ffiLibs="$(xcrun --show-sdk-path)/usr/include/ffi"        # Workaround for GHC9.0.2 bug until we can use GHC9.2.3+
 export C_INCLUDE_PATH=$ffiLibs                            # https://gitlab.haskell.org/ghc/ghc/-/issues/20592#note_436353
 
-export PATH="/opt/homebrew/opt/llvm@12/bin:$PATH"         # The arm64 build currently requires llvm until we get to GHC 9.4+
+export PATH="/opt/homebrew/opt/llvm@13/bin:$PATH"         # The arm64 build currently requires llvm until we get to GHC 9.4+
 
 $stack install --local-bin-path $dist