Snap build is not keeping the default value for `environment` - "TMPDIR: "$XDG_RUNTIME_DIR"

[julian-alarcon]

I'm not sure if this is related to recent changes on Electron 38 or 39, but it seems that the snap build is not keeping the default value mentioned in https://www.electron.build/app-builder-lib.interface.snapoptions#environment

The default value should be {"TMPDIR: "$XDG_RUNTIME_DIR"}, but I needed to add it manually in my package.json in my latest version for the Tray Icon to work in my snap build.

julian-alarcon/prospect-mail@e7db51c

The documentation talking about it is here:
https://www.electronjs.org/docs/latest/tutorial/snapcraft

$XDG_RUNTIME_DIR points to a directory where temporary files can be created (source).

[mmaietta]

What snap core are you using? And/or did you update your electron recently? electron-builder's snap implementation is veeery old.

Somewhat related, I'm working on adding support for core24 w/ extensions: gnome so that all those defaults are properly expanded during packaging. This is targeting the upcoming node 22 + ESM-only upgrade in v27

[julian-alarcon]

I am using core22, and yeah, I made an update from 35 to 39.

Thank you for your effort @mmaietta !