This honors the following environment variables:
- $GPG_KEY_ID: When set, it can be the identifier, full fingerprint, or
email address of a GnuPG key which will be used to sign Flatpak builds.
- $GPG_HOMEDIR: Path to an alternative home directory to be used by GnuPG,
instead of the default ~/.gnupg directory of the current user. This can
be used to point GnuPG to a different keychain.
This adds support for building Flatpak application bundles, which should be
runnable on any Linux distribution with Flatpak support. See the page at
http://flatpak.org/getting.html
New Gulp tasks are added to prepare a directory with the needed files
(vscode-linux-${arch}-prepare-flatpak), assembling the Flatpak bundles
(vscode-linux-${arch}-flatpak), and for cleaning the build directories
(clean-vscode-linux-${arch}-flatpak). This mimics how the Debian and RPM
package creation works. Hence, building an application bundle is done with:
$ gulp vscode-linux-x64-flatpak
[...]
$ ls *.flatpak
com.visualstudio.code.oss-x86_64.flatpak
Installing and running the application is achieved with:
$ flatpak --user install --bundle com.visualstudio.code.oss-x86_64.flatpak
$ flatpak run com.visualstudio.code.oss
(Removing "--user" would install the application system-wide. Also note that
the "org.freedesktop.Platform" runtime needs to be installeed, check the
Flatpak website for instructions.)
The "flatpak-bundler" development dependency provides an asynchronous API to
invoke "flatpak-builder". The "gulp-image-resize" module is used to
incorporate scaling of the application icon to multiple sizes, and uses
ImageMagick (or GraphicsMagick) under the hood, which is commonly available on
most GNU/Linux distributions.
Instead of building the Electron dependencies ourselves, this uses the
io.atom.electron.BaseApp bundle as base application.
Instead of building the Electron dependencies, this reuses the
"io.atom.electron.BaseApp" bundle as base application. The contents of the
base application are imported at build time, and then Electron and the
prepared files added on top. The prebuilt base application will be fetched
automatically using the URL specified in the "baseFlatpakref" attribute of the
manifest, and it is kindly hosted at Amazon S3 by Endless Computers
(https://endlessm.com). The sources for the base application can be found at:
https://github.com/endlessm/electron-flatpak-base-app/
