Adding files

LICENSE

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+Uhhh
+
+This is more of a "All rights reserved", than anything else.
+
+We don't recommend using this source code to build your own Minecraft
+launcher due to a good amount of low quality legacy code, but it still
+can be used as a reference to build, for example Microsoft authentication
+or CurseForge integration.

flake.lock

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+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1775710090,
+        "narHash": "sha256-ar3rofg+awPB8QXDaFJhJ2jJhu+KqN/PRCXeyuXR76E=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "4c1018dae018162ec878d42fec712642d214fdfa",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+	description = "Legacy Minecraft Launcher";
+	
+	inputs = {
+		nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+		flake-utils.url = "github:numtide/flake-utils";
+	};
+	
+	outputs = { self, nixpkgs, flake-utils }: flake-utils.lib.eachDefaultSystem (system:
+		let
+			pkgs = import nixpkgs { inherit system; };
+		in
+		{
+			packages.default = pkgs.stdenvNoCC.mkDerivation {
+				pname = "legacy-launcher";
+				version = "latest";
+				
+				src = pkgs.fetchurl {
+					url = "https://ely.by/load/launcher/jar";
+					sha256 = "sha256-n4J+/I8hsU4EA6eqyUUIScJhvLpkUdmr7u5jiLhQhX4=";
+				};
+				
+				nativeBuildInputs = [ pkgs.makeWrapper ];
+				
+				dontUnpack = true;
+				
+				installPhase = ''
+				mkdir -p $out/bin
+				mkdir -p $out/share/{applications,legacy-launcher}
+				
+				# Install JAR
+				install -Dm644 $src \
+				  $out/share/legacy-launcher/LegacyLauncher_legacy.jar
+				
+				# Create launcher wrapper
+				makeWrapper ${pkgs.jre}/bin/java \
+				  $out/bin/legacy-launcher \
+				  --add-flags "-jar $out/share/legacy-launcher/LegacyLauncher_legacy.jar"
+				
+				# Desktop entry
+				install -Dm644 ${./legacy-launcher.desktop} \
+				  $out/share/applications/legacy-launcher.desktop
+				'';
+				
+				meta = with pkgs.lib; {
+					description = "Stable, fast and simple Minecraft Launcher";
+					homepage = "https://llaun.ch";
+					license = licenses.gpl3Only;
+					platforms = platforms.all;
+				};
+			};
+		 }
+	);
+}

legacy-launcher.desktop

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+[Desktop Entry]
+Name=Legacy Launcher
+Exec=/usr/bin/legacy-launcher
+Icon=legacy-launcher
+Type=Application
+Categories=Game;
+Comment=Stable, fast and simple Minecraft Launcher.