Add hactoolnet-bin to packages, but do not add to environment.

flake.nix

@@ -136,6 +136,7 @@
     };
 
     packages.x86_64-linux = {
+      hactoolnet-bin = pkgs.callPackage ./home/packages/hactoolnet-bin/package.nix {};
       irdkit = pkgs.callPackage ./home/packages/irdkit/package.nix {};
       ird_tools = pkgs.callPackage ./home/packages/ird_tools/package.nix {};
       ps3dec = pkgs.callPackage ./home/packages/ps3dec/package.nix {};

home/packages/hactoolnet-bin/package.nix

@@ -0,0 +1,45 @@
+{
+  lib,
+  autoPatchelfHook,
+  fetchzip,
+  gcc,
+  makeWrapper,
+  openssl,
+  stdenv,
+  zlib
+}:
+
+stdenv.mkDerivation rec {
+  name = "hactoolnet-bin";
+  version = "0.19.0";
+
+  src = fetchzip {
+    url = "https://github.com/Thealexbarney/LibHac/releases/download/v0.19.0/hactoolnet-0.19.0-linux.zip";
+    sha256 = "njlIFsAjyKErYatbP+3fmjP5dv3DhJ7G1+KvC2ZPdso=";
+  };
+
+  buildInputs = [
+    autoPatchelfHook
+    makeWrapper
+    gcc.cc
+    zlib
+  ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    chmod +x hactoolnet
+    cp hactoolnet $out/bin/
+    wrapProgram $out/bin/hactoolnet \
+      --set DOTNET_SYSTEM_GLOBALIZATION_INVARIANT 1 \
+      --set LD_LIBRARY_PATH ${lib.makeLibraryPath [ openssl ]}
+  '';
+
+  meta = {
+    description = "An example program that uses LibHac. It is used in a similar manner to hactool.";
+    homepage = "https://github.com/Thealexbarney/LibHac";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ ];
+    mainProgram = "hactoolnet";
+    platforms = lib.platforms.all;
+  };
+}