add upstream distribution sources for linux + flatpak package

.github/workflows/flatpak-build.yml

@@ -0,0 +1,25 @@
+name: Flatpak Build
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: bilelmoussaoui/flatpak-github-actions:gnome-42
+      options: --privileged
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Build Flatpak bundle
+        uses: flatpak/flatpak-github-actions/flatpak-builder@v6
+        with:
+          bundle: modrinthApp.flatpak
+          manifest-path: distribution/com.modrinth.ModrinthApp.yml
+          cache-key: flatpak-builder-${{ github.ref }}

.gitignore

@@ -112,3 +112,6 @@ fabric.properties
 
 theseus.iml
 
+# flatpak
+.flatpak-builder
+flatbuild

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "distribution/shared-modules"]
+	path = distribution/shared-modules
+	url = https://github.com/flathub/shared-modules.git

distribution/com.modrinth.ModrinthApp.desktop

@@ -0,0 +1,12 @@
+[Desktop Entry]
+Name=Modrinth App
+Comment=Modrinth's game launcher for creating and playing Modrinth projects
+Exec=modrinth-app
+Icon=com.modrinth.ModrinthApp
+Type=Application
+Terminal=false
+StartupNotify=true
+Categories=Game;ActionGame;AdventureGame;Simulation;
+Keywords=game;minecraft;mc;
+StartupWMClass=ModrinthApp
+Version=1.4

distribution/com.modrinth.ModrinthApp.metainfo.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop">
+  <id>com.modrinth.ModrinthApp</id>
+  <launchable type="desktop-id">com.modrinth.ModrinthApp.desktop</launchable>
+  <name>Modrinth App</name>
+  <developer_name>Modrinth</developer_name>
+  <summary>Modrinth's game launcher for creating and playing Modrinth projects</summary>
+  <metadata_license>CC0-1.0</metadata_license>
+  <project_license>GPL-3.0-only</project_license>
+	<!--<url type="homepage">https://modrinth.com</url>-->
+	<!--<url type="bugtracker">https://github.com/modrinth/theseus/issues</url>-->
+  <!--<url type="vcs-browser">https://github.com/modrinth/theseus</url>-->
+  <!--<url type="contribute">https://github.com/modrinth/theseus</url>-->
+  <description>
+    <p>Modrinth's game launcher for creating and playing Modrinth projects</p>
+  </description>
+  <content_rating type="oars-1.1">
+    <content_attribute id="violence-fantasy">moderate</content_attribute>
+    <content_attribute id="social-chat">intense</content_attribute>
+  </content_rating>
+</component>

distribution/com.modrinth.ModrinthApp.yml

@@ -0,0 +1,81 @@
+id: com.modrinth.ModrinthApp
+runtime: org.gnome.Platform
+runtime-version: "42"
+sdk: org.gnome.Sdk
+sdk-extensions:
+  - org.freedesktop.Sdk.Extension.rust-stable
+  - org.freedesktop.Sdk.Extension.node18
+
+command: modrinth-app
+finish-args: 
+  - --filesystem=xdg-run/app/com.discordapp.Discord:create # allows for discord rpc
+  - --device=all
+  - --share=ipc
+  - --share=network
+  - --socket=pulseaudio
+  - --socket=x11
+  - --socket=wayland
+
+build-options:
+  append-path: "/usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/node18/bin"
+
+  build-args:
+    - --share=network
+
+modules:
+  - shared-modules/libappindicator/libappindicator-gtk3-12.10.json
+
+  # for some controller mods (see https://github.com/isXander/Controlify/issues/31)
+  - shared-modules/libusb/libusb.json
+
+  - name: flite
+    buildsystem: autotools
+    config-opts:
+      - --enable-shared
+      - --with-audio=pulseaudio
+    sources:
+      - type: archive
+        url: https://github.com/festvox/flite/archive/refs/tags/v2.2.tar.gz
+        sha512: 1ca2f4145651490ef8405fdb830a3b42e885020a7603d965f6a5581b01bed41047d396b38c2ceab138fc0b28d28078db17acd2b5a84c6444cb99d65c581afa72
+    cleanup:
+      - '/lib/libflite*.a'
+
+  - name: modrinth-app
+    buildsystem: simple
+    build-options:
+      append-path: /run/build/modrinth-app/pnpm
+    build-commands:
+      - pnpm config set store-dir .pnpm-store
+      - cd theseus/theseus_gui && pnpm install
+      - cd theseus/theseus_gui && pnpm build
+      - cd theseus && cargo fetch --locked --manifest-path Cargo.toml
+      - cd theseus && cargo build --locked --release
+
+      - install -Dm755 theseus/target/release/theseus_gui /app/bin/modrinth-app
+
+      - mkdir -p /app/share/{icons/hicolor/256x256/apps,applications,metainfo}
+
+      - cp theseus/theseus_gui/src-tauri/icons/Square284x284Logo.png /app/share/icons/hicolor/256x256/apps/com.modrinth.ModrinthApp.png 
+      - install -Dm644 com.modrinth.ModrinthApp.metainfo.xml /app/share/metainfo/com.modrinth.ModrinthApp.metainfo.xml
+      - install -Dm644 com.modrinth.ModrinthApp.desktop /app/share/applications/com.modrinth.ModrinthApp.desktop
+
+    sources:
+      - type: archive
+        url: https://registry.npmjs.org/@pnpm/linux-x64/-/linux-x64-7.33.5.tgz
+        sha512: d594a9e505b33a5a7b8684645ca762a2c24c6b3e1e477afe8f412d0dd5c8b1b9b9e636e3a19ae0ceeed603d8507f84b081ed12b283ac543bc4bf26d591cab4c5
+        dest: pnpm
+
+      - type: shell
+        commands:
+          - chmod +x pnpm
+        dest: pnpm
+
+      - type: dir
+        path: ../
+        dest: theseus
+
+      - type: file
+        path: com.modrinth.ModrinthApp.metainfo.xml
+
+      - type: file
+        path: com.modrinth.ModrinthApp.desktop