Add support for Windows Aarch64

Co-authored-by: Cheng Shao <[email protected]>

Author: GulinSS

Cabal/src/Distribution/Compat/Environment.hs

@@ -63,7 +63,7 @@ setEnv_ key value = withCWString key $ \k -> withCWString value $ \v -> do
 {- FOURMOLU_DISABLE -}
 # if defined(i386_HOST_ARCH)
 #  define WINDOWS_CCONV stdcall
-# elif defined(x86_64_HOST_ARCH)
+# elif defined(x86_64_HOST_ARCH) || defined(aarch64_HOST_ARCH)
 #  define WINDOWS_CCONV ccall
 # else
 #  error Unknown mingw32 arch

cabal-install/src/Distribution/Client/Compat/ExecutablePath.hs

@@ -123,7 +123,7 @@ getExecutablePath = readSymbolicLink $ "/proc/self/exe"
 
 # if defined(i386_HOST_ARCH)
 #  define WINDOWS_CCONV stdcall
-# elif defined(x86_64_HOST_ARCH)
+# elif defined(x86_64_HOST_ARCH) || defined(aarch64_HOST_ARCH)
 #  define WINDOWS_CCONV ccall
 # else
 #  error Unknown mingw32 arch

changelog.d/pr-10705

@@ -0,0 +1,8 @@
+---
+synopsis: 'Add support for Windows Aarch64'
+packages: [Cabal, cabal-install]
+prs: 10705
+---
+
+Adds to preprocessor branches the option to support `aarch64_HOST_ARCH` platform on Windows Aarch64 target.
+`ccall` convention is used at Aarch64, same as for `x86_64_HOST_ARCH`.