Move comment and fix elmLib

pkgs/development/compilers/elm/default.nix

@@ -69,8 +69,6 @@ let
         license = licenses.bsd3;
         maintainers = [ maintainers.turbomack ];
       }) (self.callPackage ./packages/elm-instrument.nix {}));
-
-      elmVersion = elmPkgs.elm.version;
     };
     in elmPkgs // {
       inherit elmPkgs;
@@ -141,7 +139,7 @@ in lib.makeScope pkgs.newScope (self: with self; {
         `patchNpmElm` function also defined in `packages/lib.nix`.
   */
   elmLib = let
-    hsElmPkgs = hs810Pkgs self;
+    hsElmPkgs = (hs810Pkgs self) // (hs96Pkgs self);
   in import ./packages/lib.nix {
     inherit lib;
     inherit (pkgs) writeScriptBin stdenv;

pkgs/development/compilers/elm/update.sh

@@ -1,9 +1,15 @@
 #!/usr/bin/env nix-shell
 #!nix-shell -p cabal2nix elm2nix -i bash ../../..
 
+# We're building binaries from commit that npm installer is using since
+# November 1st release called 0.19.1-6 in npm registry.
+# These binaries are built with newer ghc version and also support Aarch64 for Linux and Darwin.
+# Upstream git tag for 0.19.1 is still pointing to original commit from 2019.
 cabal2nix https://github.com/elm/compiler --revision 2f6dd29258e880dbb7effd57a829a0470d8da48b > packages/elm.nix
+
 echo "need to manually copy registry.dat from an existing elm project"
 #elm2nix snapshot > registry.dat
+
 pushd "$(nix-build -A elmPackages.elm.src --no-out-link ../../../..)/reactor"
   elm2nix convert > $OLDPWD/packages/elm-srcs.nix
 popd