add git-squash

modules/home/all/git.nix

@@ -2,6 +2,7 @@
 {
   home.packages = with pkgs; [
     git-filter-repo
+    git-squash # https://github.com/sheerun/git-squash
   ];
 
   programs.git = {

overlays/default.nix

@@ -15,4 +15,5 @@ self: super: {
   actualism-app = inputs.actualism-app.packages.${self.system}.default;
   omnix = inputs.omnix.packages.${self.system}.default;
   git-merge-and-delete = self.callPackage "${packages}/git-merge-and-delete.nix" { };
+  git-squash = self.callPackage "${packages}/git-squash.nix" { };
 }

packages/git-squash.nix

@@ -0,0 +1,34 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, bash
+, git
+}:
+
+stdenv.mkDerivation {
+  pname = "git-squash";
+  version = "0.3.0";
+
+  src = fetchFromGitHub {
+    owner = "sheerun";
+    repo = "git-squash";
+    rev = "master";
+    sha256 = "sha256-yvufKIwjP7VcIzLi8mE228hN4jmaqk90c8oxJtkXEP8=";
+  };
+
+  nativeBuildInputs = [ bash git ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp git-squash $out/bin/git-squash
+    chmod +x $out/bin/git-squash
+  '';
+
+  meta = with lib; {
+    description = "A Git command for squashing commits";
+    homepage = "https://github.com/sheerun/git-squash";
+    license = licenses.mit; # Adjust if the actual license is different
+    platforms = platforms.all;
+    maintainers = [ ]; # You can add maintainers if needed
+  };
+}