oama: wrap binary with libsecret and gpg optionally (#401420)

pkgs/by-name/oa/oama/package.nix

···
   haskell,
   lib,
   stdenv,
+  coreutils,
+  libsecret,
+  gnupg,
+  makeBinaryWrapper,
+  withLibsecret ? true, # default oama config uses libsecret
+  withGpg ? false,
 }:
 let
   inherit (haskell.lib.compose) overrideCabal justStaticExecutables;
···
     maintainers = with lib.maintainers; [ aidalgol ];
 
     passthru.updateScript = ./update.sh;
+
+    buildDepends = [
+      makeBinaryWrapper
+    ];
+
+    postInstall = ''
+      wrapProgram $out/bin/oama \
+        --prefix PATH : ${
+          lib.makeBinPath (
+            [ coreutils ] ++ lib.optional withLibsecret libsecret ++ lib.optional withGpg gnupg
+          )
+        }
+    '';
   };
 
   raw-pkg = haskell.packages.ghc912.callPackage ./generated-package.nix { };