docs: add Flatpak documentation

docs/configuration/configuration.md

@@ -69,7 +69,7 @@ Env file `electron-builder.env` in the current dir ([example](https://github.com
 <li><code id="Configuration-deb">deb</code> <a href="/configuration/linux#de">DebOptions</a> - Debian package options.</li>
 <li><code id="Configuration-snap">snap</code> <a href="snap">SnapOptions</a> - Snap options.</li>
 <li><code id="Configuration-appImage">appImage</code> <a href="/configuration/linux#appimageoptions">AppImageOptions</a> - AppImage options.</li>
-<li><code id="Configuration-flatpak">flatpak</code> <a href="#FlatpakOptions">FlatpakOptions</a> | “undefined” - Flatpak options.</li>
+<li><code id="Configuration-flatpak">flatpak</code> <a href="flatpak">FlatpakOptions</a> - Flatpak options.</li>
 <li><code id="Configuration-pacman">pacman</code> <a href="/configuration/linux#LinuxTargetSpecificOptions">LinuxTargetSpecificOptions</a></li>
 <li><code id="Configuration-rpm">rpm</code> <a href="/configuration/linux#LinuxTargetSpecificOptions">LinuxTargetSpecificOptions</a></li>
 <li><code id="Configuration-freebsd">freebsd</code> <a href="/configuration/linux#LinuxTargetSpecificOptions">LinuxTargetSpecificOptions</a></li>

docs/configuration/flatpak.md

@@ -0,0 +1,84 @@
+!!! warning "Single-file Flatpak bundles"
+    Currently `electron-builder` does **not** support publishing apps to Flatpak repositories like [Flathub](https://flathub.org/). This means the Flatpak support in `electron-builder` is limited to generating [single-file bundles](https://docs.flatpak.org/en/latest/single-file-bundles.html) which have various limitations compared to app bundles installed from a repository.
+
+    For what it's worth, there are [some](https://discourse.flathub.org/t/seeking-contractors-for-work-on-flathub-project/1889) [plans](https://discourse.flathub.org/t/is-it-possible-to-publish-a-self-contained-flatpak-file-to-flathub/2083) to make it easier to publish Electron apps to Flathub. When that happens, it should be easier to create a Flathub publisher for `electron-builder` (which would work similary to the other publishers).
+
+The top-level [flatpak](configuration.md#Configuration-flatpak) key contains a set of options instructing electron-builder on how it should build a [Flatpak](https://flatpak.org/) bundle.
+
+!!! info "Build dependencies"
+    The `flatpak` and `flatpak-builder` packages need to be installed in order to build Flatpak bundles.
+
+<!-- do not edit. start of generated block -->
+<ul>
+<li>
+<p><code id="FlatpakOptions-license">license</code> String | “undefined” - The path to EULA license file. Defaults to <code>license.txt</code> or <code>eula.txt</code> (or uppercase variants). Only plain text is supported.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-runtime">runtime</code> String - The name of the runtime that the application uses. Defaults to <code>org.freedesktop.Platform</code>.</p>
+<p>See <a href="https://docs.flatpak.org/en/latest/flatpak-builder-command-reference.html#flatpak-manifest">flatpak manifest documentation</a>.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-runtimeVersion">runtimeVersion</code> String - The version of the runtime that the application uses. Defaults to <code>20.08</code>.</p>
+<p>See <a href="https://docs.flatpak.org/en/latest/flatpak-builder-command-reference.html#flatpak-manifest">flatpak manifest documentation</a>.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-sdk">sdk</code> String - The name of the development runtime that the application builds with. Defaults to <code>org.freedesktop.Sdk</code>.</p>
+<p>See <a href="https://docs.flatpak.org/en/latest/flatpak-builder-command-reference.html#flatpak-manifest">flatpak manifest documentation</a>.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-base">base</code> String - Start with the files from the specified application. This can be used to create applications that extend another application. Defaults to <a href="https://github.com/flathub/org.electronjs.Electron2.BaseApp">org.electronjs.Electron2.BaseApp</a>.</p>
+<p>See <a href="https://docs.flatpak.org/en/latest/flatpak-builder-command-reference.html#flatpak-manifest">flatpak manifest documentation</a>.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-baseVersion">baseVersion</code> String - Use this specific version of the application specified in base. Defaults to <code>20.08</code>.</p>
+<p>See <a href="https://docs.flatpak.org/en/latest/flatpak-builder-command-reference.html#flatpak-manifest">flatpak manifest documentation</a>.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-branch">branch</code> String - The branch to use when exporting the application. Defaults to <code>master</code>.</p>
+<p>See <a href="https://docs.flatpak.org/en/latest/flatpak-builder-command-reference.html#flatpak-manifest">flatpak manifest documentation</a>.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-finishArgs">finishArgs</code> Array&lt;String&gt; - An array of arguments passed to the flatpak build-finish command. Defaults to: <code>json [   // Wayland/X11 Rendering   &quot;--socket=wayland&quot;,   &quot;--socket=x11&quot;,   &quot;--share=ipc&quot;,   // Open GL   &quot;--device=dri&quot;,   // Audio output   &quot;--socket=pulseaudio&quot;,   // Read/write home directory access   &quot;--filesystem=home&quot;,   // Allow communication with network   &quot;--share=network&quot;,   // System notifications with libnotify   &quot;--talk-name=org.freedesktop.Notifications&quot;, ] </code></p>
+<p>See <a href="https://docs.flatpak.org/en/latest/flatpak-builder-command-reference.html#flatpak-manifest">flatpak manifest documentation</a>.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-modules">modules</code> Array&lt;any&gt; - An array of objects specifying the modules to be built in order.</p>
+<p>See <a href="https://docs.flatpak.org/en/latest/flatpak-builder-command-reference.html#flatpak-manifest">flatpak manifest documentation</a>.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-files">files</code> Array - Files to copy directly into the app. Should be a list of [source, dest] tuples. Source should be a relative/absolute path to a file/directory to copy into the flatpak, and dest should be the path inside the app install prefix (e.g. /share/applications/).</p>
+<p>See <a href="https://github.com/malept/flatpak-bundler#build-options">@malept/flatpak-bundler documentation</a>.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-symlinks">symlinks</code> Array - Symlinks to create in the app files. Should be a list of [target, location] symlink tuples. Target can be either a relative or absolute path inside the app install prefix, and location should be a absolute path inside the prefix to create the symlink at.</p>
+<p>See <a href="https://github.com/malept/flatpak-bundler#build-options">@malept/flatpak-bundler documentation</a>.</p>
+</li>
+<li>
+<p><code id="FlatpakOptions-useWaylandFlags">useWaylandFlags</code> Boolean - Whether to enable the Wayland specific flags (<code>--enable-features=UseOzonePlatform --ozone-platform=wayland</code>) in the wrapper script. These flags are only available starting with Electron version 12. Defaults to <code>false</code>.</p>
+</li>
+</ul>
+<p>Inherited from <code>CommonLinuxOptions</code>:</p>
+<ul>
+<li><code id="FlatpakOptions-synopsis">synopsis</code> String | “undefined” - The <a href="https://www.debian.org/doc/debian-policy/ch-controlfields.html#s-f-Description">short description</a>.</li>
+<li><code id="FlatpakOptions-description">description</code> String | “undefined” - As <a href="/configuration/configuration#Metadata-description">description</a> from application package.json, but allows you to specify different for Linux.</li>
+<li><code id="FlatpakOptions-category">category</code> String | “undefined” - The <a href="https://specifications.freedesktop.org/menu-spec/latest/apa.html#main-category-registry">application category</a>.</li>
+<li><code id="FlatpakOptions-mimeTypes">mimeTypes</code> Array&lt;String&gt; | “undefined” - The mime types in addition to specified in the file associations. Use it if you don’t want to register a new mime type, but reuse existing.</li>
+<li><code id="FlatpakOptions-desktop">desktop</code> any | “undefined” - The <a href="https://developer.gnome.org/integration-guide/stable/desktop-files.html.en">Desktop file</a> entries (name to value).</li>
+<li><code id="FlatpakOptions-executableArgs">executableArgs</code> Array&lt;String&gt; | “undefined” - The executable parameters. Pass to executableName</li>
+</ul>
+<p>Inherited from <code>TargetSpecificOptions</code>:</p>
+<ul>
+<li><code id="FlatpakOptions-artifactName">artifactName</code> String | “undefined” - The <a href="/configuration/configuration#artifact-file-name-template">artifact file name template</a>.</li>
+<li><code id="FlatpakOptions-publish">publish</code> The <a href="/configuration/publish">publish</a> options.</li>
+</ul>
+
+<!-- end of generated block -->
+
+---
+
+## Troubleshooting
+
+If the Flatpak build process fails with an error message like "flatpak failed with status code X", setting the `DEBUG="@malept/flatpak-bundler"` environment variable should provide more context about the error.
+
+!!! example "Enable Flatpak build debug logging"
+    `env DEBUG="@malept/flatpak-bundler" electron-builder build --linux flatpak`

docs/configuration/linux.md

@@ -3,7 +3,7 @@ The top-level [linux](configuration.md#Configuration-linux) key contains set of
 <!-- do not edit. start of generated block -->
 <ul>
 <li>
-<p><code id="LinuxConfiguration-target">target</code> = <code>AppImage</code> String | <a href="/cli#targetconfiguration">TargetConfiguration</a> - Target package type: list of <code>AppImage</code>, <code>snap</code>, <code>deb</code>, <code>rpm</code>, <code>freebsd</code>, <code>pacman</code>, <code>p5p</code>, <code>apk</code>, <code>7z</code>, <code>zip</code>, <code>tar.xz</code>, <code>tar.lz</code>, <code>tar.gz</code>, <code>tar.bz2</code>, <code>dir</code>.</p>
+<p><code id="LinuxConfiguration-target">target</code> = <code>AppImage</code> String | <a href="/cli#targetconfiguration">TargetConfiguration</a> - Target package type: list of <code>AppImage</code>, <code>flatpak</code>, <code>snap</code>, <code>deb</code>, <code>rpm</code>, <code>freebsd</code>, <code>pacman</code>, <code>p5p</code>, <code>apk</code>, <code>7z</code>, <code>zip</code>, <code>tar.xz</code>, <code>tar.lz</code>, <code>tar.gz</code>, <code>tar.bz2</code>, <code>dir</code>.</p>
 <p>electron-builder <a href="/multi-platform-build#docker">docker image</a> can be used to build Linux targets on any platform.</p>
 <p>Please <a href="https://github.com/probonopd/AppImageKit/wiki/Creating-AppImages#common-mistake">do not put an AppImage into another archive</a> like a .zip or .tar.gz.</p>
 </li>

mkdocs.yml

@@ -65,6 +65,7 @@ nav:
       - Linux:
           - Any Linux Target: configuration/linux.md
           - AppImage: configuration/appimage.md
+          - Flatpak: configuration/flatpak.md
           - Snap: configuration/snap.md
 
       - Publish: configuration/publish.md
@@ -81,4 +82,4 @@ nav:
       - macOS Kernel Extensions: tutorials/macos-kernel-extensions.md
       - Sign a Windows app on macOS/Linux: tutorials/code-signing-windows-apps-on-unix.md
       - Release Using Channels: tutorials/release-using-channels.md
-      - Test Update on s3 Locally: tutorials/test-update-on-s3-locally.md
+      - Test Update on s3 Locally: tutorials/test-update-on-s3-locally.md

packages/app-builder-lib/src/options/linuxOptions.ts

@@ -2,7 +2,7 @@ import { PlatformSpecificBuildOptions, TargetConfigType, TargetSpecificOptions }
 
 export interface LinuxConfiguration extends CommonLinuxOptions, PlatformSpecificBuildOptions {
   /**
-   * Target package type: list of `AppImage`, `snap`, `deb`, `rpm`, `freebsd`, `pacman`, `p5p`, `apk`, `7z`, `zip`, `tar.xz`, `tar.lz`, `tar.gz`, `tar.bz2`, `dir`.
+   * Target package type: list of `AppImage`, `flatpak`, `snap`, `deb`, `rpm`, `freebsd`, `pacman`, `p5p`, `apk`, `7z`, `zip`, `tar.xz`, `tar.lz`, `tar.gz`, `tar.bz2`, `dir`.
    *
    * electron-builder [docker image](/multi-platform-build#docker) can be used to build Linux targets on any platform.
    *

scripts/jsdoc2md2html.js

@@ -178,6 +178,9 @@ async function render2(files, jsdoc2MdOptions) {
     if (types.some(it => it.endsWith("LinuxConfiguration"))) {
       return "[LinuxConfiguration](linux)"
     }
+    if (types.some(it => it.endsWith("FlatpakOptions"))) {
+      return "[FlatpakOptions](flatpak)"
+    }
     if (types.some(it => it.endsWith("SnapOptions"))) {
       return "[SnapOptions](snap)"
     }
@@ -207,6 +210,7 @@ async function render2(files, jsdoc2MdOptions) {
     new Page("configuration/squirrel-windows.md", "SquirrelWindowsOptions"),
 
     new Page("configuration/linux.md", "LinuxConfiguration"),
+    new Page("configuration/flatpak.md", "FlatpakOptions"),
     new Page("configuration/snap.md", "SnapOptions"),
 
     new Page("configuration/publish.md", null, {