Patch Ghidra without rebuild

Signed-off-by: Mel <mel@rnrd.eu>

2 files changed, 77 insertions, 14 deletions

diff --git a/pkgs/default.nix b/pkgs/default.nix
index ddaf684..eeeb5a7 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -1,4 +1,4 @@
-{ pkgs, unstablePkgs, ... }:
+{ pkgs, unstablePkgs, nixpkgs, nixpkgs-unstable, ... }:
 
 {
   inherit (pkgs.callPackages ./electron-wayland-wrappers.nix { })
@@ -7,7 +7,7 @@
     element-desktop
     ;
 
-  ghidra = unstablePkgs.callPackage ./ghidra { };
+  ghidra = pkgs.callPackage ./ghidra { inherit nixpkgs; };
 
   ngfx = pkgs.callPackage ./ngfx.nix { };
 
diff --git a/pkgs/ghidra/default.nix b/pkgs/ghidra/default.nix
index 79e61e5..56045b1 100644
--- a/pkgs/ghidra/default.nix
+++ b/pkgs/ghidra/default.nix
@@ -1,15 +1,78 @@
-{ ghidra }:
+{
+  lib,
+  ghidra,
+  openjdk21,
+  nixpkgs,
+  makeWrapper,
+  runCommand,
+  callPackage,
+  ...
+}:
 
 let
-  ghidra-patched = ghidra.overrideAttrs (finalAttrs: previousAttrs: { 
-    patches = previousAttrs.patches ++ [ ./ui-scale.patch ];
-  });
+  ghidra-copy = let
+    copy = runCommand "ghidra-patched" {
+      nativeBuildInputs = [ makeWrapper ];
+    } ''
+      mkdir -p $out $out/lib/ghidra/support
+
+      # dont let `cp` overwrite this later
+      ln -s \
+        $out/lib/ghidra/support/.launch.sh-wrapped \
+        $out/lib/ghidra/support/launch.sh
+
+      patch \
+        ${ghidra}/lib/ghidra/support/launch.properties \
+        -i ${./ui-scale.patch} \
+        -o $out/lib/ghidra/support/launch.properties
+
+      cp --update=none -r ${ghidra}/bin ${ghidra}/lib ${ghidra}/share $out/
+
+      # the original has references to the old ghidra package
+      wrapProgram "$out/lib/ghidra/support/.launch.sh-wrapped" \
+        --set-default NIX_GHIDRAHOME "$out/lib/ghidra/Ghidra" \
+        --prefix PATH : ${lib.makeBinPath [ openjdk21 ]}
+    '';
+  in
+  copy
+  // { inherit (ghidra) pname version meta releaseName distroPrefix; };
+
+  members =
+    let
+      # a bit spooky, no? :3
+      nixGhidraPath = "${nixpkgs}/pkgs/tools/security/ghidra";
+
+      buildExtensionAndScripts = callPackage "${nixGhidraPath}/build-extension.nix" {
+        ghidra = ghidra-patched;
+      };
+
+      withExtensions = callPackage "${nixGhidraPath}/with-extensions.nix" {
+        ghidra = ghidra-patched;
+      };
+
+      extensions = callPackage "${nixGhidraPath}/extensions.nix" {
+        inherit ghidra;
+      };
+    in
+    {
+      inherit withExtensions extensions;
+      inherit (buildExtensionAndScripts) buildExtension buildGhidraScripts;
+    };
+
+    ghidra-patched = ghidra-copy // members;
 in
-ghidra-patched.withExtensions (extensions: with extensions; [
-  gnudisassembler
-  machinelearning
-  ghidraninja-ghidra-scripts
-  lightkeeper
-  ret-sync
-  ghidra-delinker-extension
-])
+ghidra-patched.withExtensions (
+  # extensions passed by function are not built correctly,
+  # use extensions build with "normal" ghidra.
+  extensions: with members.extensions; [
+    gnudisassembler
+    machinelearning
+    ghidraninja-ghidra-scripts
+    wasm
+    lightkeeper
+    kaiju
+    ret-sync
+    ghidra-delinker-extension
+    ghidra-golanganalyzerextension
+  ]
+)