libstemmer: install and use snowball binary from buildPackages

libstemmer-aarch64-unknown-linux-gnu> ./snowball algorithms/arabic.sbl -o src_c/stem_UTF_8_arabic -eprefix arabic_UTF_8_ -r ../runtime -u
libstemmer-aarch64-unknown-linux-gnu> /nix/store/p7bpdnxqd3i5hwm92mrscf7mvxk66404-bash-5.1-p16/bin/bash: line 4: ./snowball: cannot execute binary file: Exec format error

ref https://github.com/archlinux/svntogit-packages/blob/packages/snowball/trunk/PKGBUILD

for emulator alternative

ref: 4976c61b3a/srcpkgs/snowball/template (L16-L21)

pkgs/development/libraries/libstemmer/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, perl }:
+{ lib, stdenv, fetchFromGitHub, perl, buildPackages }:
 
 stdenv.mkDerivation rec {
   pname = "libstemmer";
@@ -15,6 +15,9 @@ stdenv.mkDerivation rec {
 
   prePatch = ''
     patchShebangs .
+  '' + lib.optionalString (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
+    substituteInPlace GNUmakefile \
+      --replace './snowball' '${lib.getBin buildPackages.libstemmer}/bin/snowball'
   '';
 
   makeTarget = "libstemmer.a";
@@ -23,6 +26,7 @@ stdenv.mkDerivation rec {
     runHook preInstall
     install -Dt $out/lib libstemmer.a
     install -Dt $out/include include/libstemmer.h
+    install -Dt $out/bin {snowball,stemwords}
     runHook postInstall
   '';