Basic flake icon and theme

flake.nix

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+{
+  description = "Windows XP Theme flake";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  };
+
+  outputs = { self, nixpkgs }: 
+    let
+      system = "x86_64-linux";
+      pkgs = import nixpkgs { inherit system; };
+    in {
+      packages.${system} = {
+        windows-xp-icons = pkgs.callPackage ./windows-xp-icons.nix { };
+        windows-xp-theme = pkgs.callPackage ./windows-xp-theme.nix { };
+        default = self.packages.${system}.windows-xp-theme;
+    };
+  };
+}
+

windows-xp-icons.nix

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+
+{ lib
+, stdenvNoCC
+, fetchFromGitHub
+, gtk3
+, hicolor-icon-theme
+}:
+
+stdenvNoCC.mkDerivation rec {
+  pname = "Windows-xp-icon-theme";
+  version = "2025-07-10";
+
+  src = fetchFromGitHub {
+    owner = "foglar";
+    repo = "Windows-XP";
+    rev = "master";
+    hash = "sha256-BM/pWQKJ8cOBrYkJ5+tu4BW7WQjCeNuzDng/cILV5tI=";
+    #domain = "gitea.homework.zip";
+    #owner = "shinya";
+    #repo = "WinXP-Icons";
+    #rev = "master";
+  };
+
+  nativeBuildInputs = [ gtk3 ];
+
+  dontBuildIconCache = true;
+
+  installPhase = '' 
+    runHook preInstall
+    mkdir -p $out/share/icons/ # copy everything to the icon directory 
+    cp -r . $out/share/icons/${pname} 
+    runHook postInstall 
+  '';
+
+  meta = with lib; {
+    description = "Windows XP icon theme for Linux (B00merang Artwork)";
+    homepage = "https://github.com/B00merang-Artwork/Windows-XP";
+    license = licenses.gpl3Only;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ ];
+  };
+}
+
+

windows-xp-theme.nix

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+{ stdenv, fetchFromGitHub, lib }:
+
+stdenv.mkDerivation rec {
+  pname = "windows-xp-gtk-theme";
+  version = "3.1";
+
+  src = fetchFromGitHub {
+    owner = "B00merang-Project";
+    repo = "Windows-XP";
+    rev = version;
+    sha256 = "sha256-VVNYf2jTa5lqL6RvKT7Hq2NqwUHpdqvjhMCjY3h6Hjs=";
+  };
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/share/themes
+    rm README.md LICENSE.md
+    cp -r * $out/share/themes/
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Windows-XP like GTK theme";
+    homepage = "https://github.com/B00merang-Project/Windows-XP";
+    license = licenses.gpl2Plus;
+    platforms = platforms.linux;
+  };
+}
+