@electron-forge/maker-flatpak error after project setup

[denn-s]

Preflight Checklist

• I have read the contribution documentation for this project.
• I agree to follow the code of conduct that this project follows, as appropriate.
• I have searched the issue tracker for a bug that matches the one I want to file, without success.

Issue Details

• Electron Forge Version:
  • 6.0.0-beta.51
• Electron Version:
  • 9.0.0
• Operating System:
  • Ubuntu 20.04 x64
• Last Known Working Electron Forge version:

Expected Behavior

maker-flatpak should successfully build the flatpak

Actual Behavior

maker-flatpak process fails with the following error:
An unhandled error has occurred inside Forge: An error occured while making for target: flatpak flatpak-builder failed with status code 1 Error: flatpak-builder failed with status code 1 at ChildProcess.<anonymous> (/home/denn-s/VSCodeProjects/my-app/node_modules/@malept/flatpak-bundler/index.js:68:16) at ChildProcess.emit (events.js:315:20) at ChildProcess.EventEmitter.emit (domain.js:485:12) at maybeClose (internal/child_process.js:1051:16) at Socket.<anonymous> (internal/child_process.js:442:11) at Socket.emit (events.js:315:20) at Socket.EventEmitter.emit (domain.js:485:12) at Pipe.<anonymous> (net.js:670:12) error Command failed with exit code 1.

To Reproduce

• yarn create electron-app my-app
• yarn add --dev @electron-forge/maker-flatpak
• add maker-flatpak to package.json as described in the forge config section of the docs:
  { "name": "@electron-forge/maker-flatpak", "config": { "options": { "categories": ["Video"], "mimeType": ["video/h264"] } } }
• yarn make

Additional Information

I figured out a way to make @electron-forge/maker-flatpak work again. My research for a solution guided me towards the following result:

• set up flatpak as described in the official flatpak electron example
• change the maker config options:
  { "name": "@electron-forge/maker-flatpak", "config": { "options": { "base": "io.atom.electron.BaseApp", "base-version": "stable" } } }

If this is desired I could create a pull request in order to extend the documentation for maker-flatpak so that new users could set up a working flatpak configuration.

[malept]

I've updated the documentation to reflect the relatively new external dependency: electron-forge/electron-forge-docs@2aa0f59

[MangoChris]

Adding eu-string via elfutils doesn't fix this problem. Tested on Arch and Ubuntu 18.04.

[nbsp]

Also having this issue, although the error shows slightly different lines:

Error: flatpak failed with status code 1
    at ChildProcess.<anonymous> (/home/sfr/Documents/repositories/test/node_modules/@malept/flatpak-bundler/index.js:71:16)
    at ChildProcess.emit (node:events:376:20)
    at ChildProcess.EventEmitter.emit (node:domain:470:12)
    at maybeClose (node:internal/child_process:1063:16)
    at Socket.<anonymous> (node:internal/child_process:449:11)
    at Socket.emit (node:events:376:20)
    at Socket.EventEmitter.emit (node:domain:470:12)
    at Pipe.<anonymous> (node:net:666:12)

Tested on Arch, everything seems up-to-date.

[Progdrasil]

Still having this issue on Arch, eu-strip is in my path.