Fix building with more recent android sdk/ndks

This requires the atomic type fix (backport), as well as some mucking around
with hadrian, which failes to properly account for static libraries.

Author: angerman

compiler/ghc/default.nix

@@ -967,6 +967,26 @@ haskell-nix.haskellLib.makeCompilerDeps (stdenv.mkDerivation (rec {
   '';
   buildPhase = ''
     runHook preBuild
+  '' + lib.optionalString (!enableShared && targetPlatform.isAndroid && targetPlatform.isAarch64)
+  # This is rather idiotic, but we need to create the dynamic (.so) files because
+  # hadrian expects them in the src/Rules/Rts.hs:160 or thereabout.
+  ''
+      mkdir -p _build/stage1/lib/aarch64-android-ghc-${ghc-version}/
+      touch _build/stage1/lib/aarch64-android-ghc-${ghc-version}/libHSrts-1.0.2_thr_debug-ghc${ghc-version}.so
+      touch _build/stage1/lib/aarch64-android-ghc-${ghc-version}/libHSrts-1.0.2_thr-ghc${ghc-version}.so
+      touch _build/stage1/lib/aarch64-android-ghc-${ghc-version}/libHSrts-1.0.2_debug-ghc${ghc-version}.so
+      touch _build/stage1/lib/aarch64-android-ghc-${ghc-version}/libHSrts-1.0.2-ghc${ghc-version}.so
+  '' + lib.optionalString (!enableShared && targetPlatform.isAndroid && targetPlatform.isAarch32)
+  # This is rather idiotic, but we need to create the dynamic (.so) files because
+  # hadrian expects them in the src/Rules/Rts.hs:160 or thereabout.
+  ''
+      mkdir -p _build/stage1/lib/arm-android-ghc-${ghc-version}/
+      touch _build/stage1/lib/arm-android-ghc-${ghc-version}/libHSrts-1.0.2_thr_debug-ghc${ghc-version}.so
+      touch _build/stage1/lib/arm-android-ghc-${ghc-version}/libHSrts-1.0.2_thr-ghc${ghc-version}.so
+      touch _build/stage1/lib/arm-android-ghc-${ghc-version}/libHSrts-1.0.2_debug-ghc${ghc-version}.so
+      touch _build/stage1/lib/arm-android-ghc-${ghc-version}/libHSrts-1.0.2-ghc${ghc-version}.so
+  ''
+  + ''
     ${hadrian}/bin/hadrian ${hadrianArgs}
   '' + lib.optionalString (installStage1 && !stdenv.targetPlatform.isGhcjs && builtins.compareVersions ghc-version "9.8" < 0) ''
     ${hadrian}/bin/hadrian ${hadrianArgs} stage1:lib:libiserv

overlays/bootstrap.nix

@@ -333,6 +333,8 @@ in {
 
                 ++ onAndroid (from      "9.6"          ./patches/ghc/ghc-9.6-COMPAT_R_ARM_PREL31.patch)
                 ++ onAndroid (from      "9.10"         ./patches/ghc/ghc-9.10-ignore-libc.patch)
+                # unbreak modern clang with proper _atomic declarations.
+                ++ onAndroid (fromUntil "9.6"  "9.12"  ./patches/ghc/7db8c9927fae3369fc4ecff68f80c4cb32eea757.patch)
 
                 ++ onGhcjs (from        "9.12"         ./patches/ghc/ghc-9.12-ghcjs-rts-mem-heap8.patch)
                 # Fix for `fatal error: 'rts/Types.h' file not found` when building `primitive`