build: add Flatpak packaging and CI workflow

.github/workflows/flatpak.yml

@@ -0,0 +1,95 @@
+name: Build Flatpak
+
+on:
+  push:
+    branches:
+      - "**flatpak**"
+  release:
+    types:
+      - published
+  workflow_dispatch:
+
+concurrency:
+  group: flatpak-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  build-flatpak:
+    name: Build Flatpak (${{ matrix.arch }})
+    strategy:
+      matrix:
+        include:
+          - arch: x86_64
+            runs-on: ubuntu-latest
+            protoc-zip: protoc-25.2-linux-x86_64.zip
+            protoc-sha256: 78ab9c3288919bdaa6cfcec6127a04813cf8a0ce406afa625e48e816abee2878
+          - arch: aarch64
+            runs-on: ubuntu-24.04-arm
+            protoc-zip: protoc-25.2-linux-aarch_64.zip
+            protoc-sha256: 07683afc764e4efa3fa969d5f049fbc2bdfc6b4e7786a0b233413ac0d8753f6b
+
+    runs-on: ${{ matrix.runs-on }}
+    timeout-minutes: 20
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
+
+      - name: Install Flatpak and Flatpak Builder
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y flatpak flatpak-builder
+
+      - name: Add Flathub remote
+        run: |
+          sudo flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+
+      - name: Install Flatpak SDK and runtime
+        run: |
+          sudo flatpak install -y --noninteractive flathub \
+            org.freedesktop.Platform//25.08 \
+            org.freedesktop.Sdk//25.08 \
+            org.freedesktop.Sdk.Extension.rust-stable//25.08 \
+            org.freedesktop.Sdk.Extension.llvm21//25.08
+          echo "=== Disk space after SDK install ==="
+          df -h
+
+      - name: Patch manifest for architecture
+        run: |
+          sed -i "s|protoc-25.2-linux-x86_64.zip|${{ matrix.protoc-zip }}|g" flatpak/org.dash.DashEvoTool.yml
+          sed -i "s|sha256: 78ab9c3288919bdaa6cfcec6127a04813cf8a0ce406afa625e48e816abee2878|sha256: ${{ matrix.protoc-sha256 }}|" flatpak/org.dash.DashEvoTool.yml
+
+      - name: Cache Flatpak builder
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684  # v4.2.3
+        with:
+          path: .flatpak-builder
+          key: flatpak-builder-${{ matrix.arch }}-${{ hashFiles('flatpak/org.dash.DashEvoTool.yml', 'Cargo.lock') }}
+          restore-keys: |
+            flatpak-builder-${{ matrix.arch }}-
+
+      - name: Build Flatpak
+        run: |
+          flatpak-builder --force-clean --repo=flatpak-repo build-dir flatpak/org.dash.DashEvoTool.yml
+
+      - name: Create Flatpak bundle
+        run: |
+          flatpak build-bundle flatpak-repo dash-evo-tool-linux-${{ matrix.arch }}.flatpak org.dash.DashEvoTool
+
+      - name: Upload Flatpak bundle as artifact
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4.6.2
+        with:
+          name: dash-evo-tool-linux-${{ matrix.arch }}-flatpak
+          path: dash-evo-tool-linux-${{ matrix.arch }}.flatpak
+
+      - name: Attach bundle to release
+        if: github.event_name == 'release'
+        permissions:
+          contents: write
+        uses: softprops/action-gh-release@da05d552573ad5aba039eaac05058a918a7bf631  # v2.2.2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          files: dash-evo-tool-linux-${{ matrix.arch }}.flatpak

.gitignore

@@ -6,6 +6,10 @@ build-test/
 
 # Build artifacts
 *.snap
+*.flatpak
+.flatpak-builder/
+flatpak-repo/
+build-dir/
 
 # Dot env file
 .env

README.md

@@ -11,12 +11,13 @@ The tool supports both Mainnet and Testnet networks. Check out the [documentatio
 
 ## Table of Contents
 
+- [Install via Flatpak (Linux)](#install-via-flatpak-linux)
 - [Prerequisites](#prerequisites)
   - [Rust Installation](#rust-installation)
   - [Dependencies](#dependencies)
   - [Windows Runtime Dependencies](#windows-runtime-dependencies)
   - [Dash Core Wallet Setup](#dash-core-wallet-setup)
-- [Installation](#installation)
+- [Build from Source](#build-from-source)
 - [Getting Started](#getting-started)
   - [Start the App](#start-the-app)
   - [Application directory](#application-directory)
@@ -31,8 +32,38 @@ The tool supports both Mainnet and Testnet networks. Check out the [documentatio
 - [Support](#support)
 - [Security Note](#security-note)
 
+## Install via Flatpak (Linux)
+
+The easiest way to run Dash Evo Tool on Linux is via Flatpak. Download the `.flatpak` bundle for your architecture from the [latest release](https://github.com/dashpay/dash-evo-tool/releases) and install it:
+
+``` shell
+# x86_64
+flatpak install dash-evo-tool-linux-x86_64.flatpak
+
+# aarch64 (ARM)
+flatpak install dash-evo-tool-linux-aarch64.flatpak
+```
+
+To run:
+
+``` shell
+flatpak run org.dash.DashEvoTool
+```
+
+To uninstall:
+
+``` shell
+flatpak uninstall org.dash.DashEvoTool
+```
+
+The Flatpak version runs in SPV (light client) mode — no full Dash Core node is required. Application data is stored in `~/.var/app/org.dash.DashEvoTool/config/dash-evo-tool/`.
+
+> **Note:** The Flatpak data path differs from native Linux builds, which use `~/.config/dash-evo-tool/`.
+
 ## Prerequisites
 
+The following prerequisites are only needed if you want to build from source.
+
 Before you begin, ensure you have met the following requirements:
 
 ### Rust Installation
@@ -82,9 +113,9 @@ If you use the prebuilt Windows binary, make sure the target machine has:
 
 - **Synchronize Wallet**: Ensure the wallet is fully synced with the network you intend to use (Mainnet or Testnet).
 
-## Installation
+## Build from Source
 
-To install Dash Evo Tool:
+To build Dash Evo Tool from source:
 
 1. **Clone the repository**:
 

flatpak/org.dash.DashEvoTool.desktop

@@ -0,0 +1,10 @@
+[Desktop Entry]
+Name=Dash Evo Tool
+Comment=Graphical user interface for interacting with Dash Evolution
+Exec=dash-evo-tool
+Icon=org.dash.DashEvoTool
+Type=Application
+Terminal=false
+Categories=Finance;Network;Utility;
+Keywords=Dash;Blockchain;Crypto;Wallet;DPNS;Evolution;
+StartupWMClass=org.dash.DashEvoTool

flatpak/org.dash.DashEvoTool.metainfo.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+  <id>org.dash.DashEvoTool</id>
+  <name>Dash Evo Tool</name>
+  <summary>Graphical user interface for interacting with Dash Evolution</summary>
+
+  <metadata_license>MIT</metadata_license>
+  <project_license>MIT</project_license>
+
+  <description>
+    <p>
+      A cross-platform desktop application for interacting with Dash Evolution
+      (Layer 2). Features include DPNS username registration, contest voting,
+      state transition viewing, wallet management, and identity operations.
+      Works in SPV (light client) mode - no full Dash Core node required.
+    </p>
+  </description>
+
+  <categories>
+    <category>Finance</category>
+    <category>Network</category>
+    <category>BlockchainTools</category>
+  </categories>
+
+  <keywords>
+    <keyword>Dash</keyword>
+    <keyword>cryptocurrency</keyword>
+    <keyword>blockchain</keyword>
+    <keyword>wallet</keyword>
+    <keyword>DPNS</keyword>
+    <keyword>Evolution</keyword>
+  </keywords>
+
+  <url type="homepage">https://github.com/dashpay/dash-evo-tool</url>
+  <url type="bugtracker">https://github.com/dashpay/dash-evo-tool/issues</url>
+
+  <launchable type="desktop-id">org.dash.DashEvoTool.desktop</launchable>
+
+  <icon type="stock">org.dash.DashEvoTool</icon>
+
+  <content_rating type="oars-1.1" />
+
+  <developer id="org.dash">
+    <name>Dash Core Group</name>
+  </developer>
+
+  <releases>
+    <release version="1.0.0-dev" date="2026-02-17" type="development" />
+  </releases>
+</component>

flatpak/org.dash.DashEvoTool.yml

@@ -0,0 +1,74 @@
+# Flatpak manifest for Dash Evo Tool
+# Build with: flatpak-builder --user --force-clean --repo=flatpak-repo build-dir flatpak/org.dash.DashEvoTool.yml
+# Install locally: flatpak-builder --user --install --force-clean build-dir flatpak/org.dash.DashEvoTool.yml
+# Create bundle: flatpak build-bundle flatpak-repo dash-evo-tool.flatpak org.dash.DashEvoTool
+
+app-id: org.dash.DashEvoTool
+runtime: org.freedesktop.Platform
+runtime-version: '25.08'
+sdk: org.freedesktop.Sdk
+sdk-extensions:
+  - org.freedesktop.Sdk.Extension.rust-stable
+  - org.freedesktop.Sdk.Extension.llvm21
+
+command: dash-evo-tool
+
+finish-args:
+  # X11 shared memory for display
+  - --share=ipc
+  # Network access for blockchain communication
+  - --share=network
+  # Display server support (prefer Wayland, fall back to X11)
+  - --socket=wayland
+  - --socket=fallback-x11
+  # GPU acceleration for egui rendering
+  - --device=dri
+
+build-options:
+  append-path: /usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/llvm21/bin
+  build-args:
+    - --share=network
+  env:
+    CARGO_HOME: /run/build/dash-evo-tool/cargo
+    PROTOC: /app/bin/protoc
+    PROTOC_INCLUDE: /app/include
+
+modules:
+  # Module 1: Install protobuf compiler (required for building dash-sdk)
+  # NOTE: CI patches this module for aarch64 via sed (see .github/workflows/flatpak.yml).
+  - name: protoc
+    buildsystem: simple
+    sources:
+      - type: file
+        url: https://github.com/protocolbuffers/protobuf/releases/download/v25.2/protoc-25.2-linux-x86_64.zip
+        sha256: 78ab9c3288919bdaa6cfcec6127a04813cf8a0ce406afa625e48e816abee2878
+    build-commands:
+      - unzip protoc-25.2-linux-x86_64.zip bin/protoc -d /app
+      - unzip protoc-25.2-linux-x86_64.zip 'include/*' -d /app
+      - chmod 755 /app/bin/protoc
+
+  # Module 2: Build libsodium (required for crypto operations)
+  - name: libsodium
+    buildsystem: autotools
+    sources:
+      - type: archive
+        url: https://github.com/jedisct1/libsodium/releases/download/1.0.20-RELEASE/libsodium-1.0.20.tar.gz
+        sha256: ebb65ef6ca439333c2bb41a0c1990587288da07f6c7fd07cb3a18cc18d30ce19
+
+  # Module 3: Build dash-evo-tool from source
+  - name: dash-evo-tool
+    buildsystem: simple
+    sources:
+      - type: dir
+        path: ..
+        skip:
+          - .flatpak-builder
+          - build-dir
+          - flatpak-repo
+          - target
+    build-commands:
+      - cargo build --release --locked
+      - install -Dm755 target/release/dash-evo-tool /app/bin/dash-evo-tool
+      - install -Dm644 flatpak/org.dash.DashEvoTool.desktop /app/share/applications/org.dash.DashEvoTool.desktop
+      - install -Dm644 flatpak/org.dash.DashEvoTool.metainfo.xml /app/share/metainfo/org.dash.DashEvoTool.metainfo.xml
+      - install -Dm644 assets/DET_LOGO.png /app/share/icons/hicolor/512x512/apps/org.dash.DashEvoTool.png