pkgs: add Sim65

pkgs/sim65.nix

@@ -0,0 +1,36 @@
+{ stdenv
+, fetchFromGitHub
+, lib
+, wxGTK32
+}:
+
+stdenv.mkDerivation {
+  name = "sim65";
+
+  src = fetchFromGitHub {
+    owner = "sittner";
+    repo = "sim65";
+    rev = "8557843c93e46e347f6f9d788faef8f302ead560";
+    sha256 = "sha256-n+THZuD77gtZ5nMcdaq4Xup95NjVPFiMk0zsTOGiXzc=";
+  };
+
+  buildInputs = [ wxGTK32 ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp sim65 $out/bin
+  '';
+
+  meta = with lib; {
+    description = "Sim65 is a 65c02 simulator and debugger for Linux/GTK systems";
+    longDescription = ''
+      Sim65 is a 65c02 simulator and debugger for Linux/GTK systems.
+      You can load binary images or S-record files containing 65c02 code and execute it.
+      Sim65 allows you to see and alter registers and memory, set breakpoints, single step, and a few other things.
+      The program is immature: there are no peripherals, for example, but it suffices for simple simulation purposes.
+    '';
+    homepage = "http://www.wsxyz.net/sim65/";
+    license = licenses.free;
+    maintainers = with maintainers; [ infinidoge ];
+  };
+}