Allow setting deb's compression type

[zadam]

On Ubuntu 21.10 (and later), the default compression type of deb packages created using dpkg-deb is ZStandard (previously it was XZ).

However, Debian doesn't support installing ZStandard compressed packages:

dpkg -i trilium_0.48.3_amd64.deb 
dpkg-deb: error: archive 'trilium_0.48.3_amd64.deb' uses unknown compression for member 'control.tar.zst', giving up
dpkg: error processing archive trilium_0.48.3_amd64.deb (--install):
 dpkg-deb --control subprocess returned error exit status 2
Errors were encountered while processing:
 trilium_0.48.3_amd64.deb

This means that when you use electron-installer-debian to build packages on Ubuntu 21.10 or later, these packages are unusable in debian.

When using dpkg-deb directly it's possible to change the compression type via -Zxz flag but this is not exposed in electron-installer-debian configuration.

[RouR]

Please, merge a PR!

Workaround, while we're waiting:

forge.config.js

const { exec } = require('child_process')

function run(cmd) {
  return new Promise((resolve, reject) => {
    exec(cmd, (error, stdout, stderr) => {
      if (error) return reject(error)
      if (stderr) return reject(stderr)
      resolve(stdout)
    })
  })
}

...

hooks: {  
	postMake: async (config, makeResults) => {	 
	  console.log("==postMake", makeResults);
	  let deb = makeResults.filter(x => x.platform === 'linux' && x.artifacts.some(y => y.endsWith('.deb')));
	  console.log("== found ", deb);
	  if (deb.length === 1) {
		  let file = deb[0].artifacts[0];
		  console.warn("will repack file", file);
		  let cmdTemplates = ['ar x some-package.deb', 
				'zstd -d < control.tar.zst | xz > control.tar.xz', 
				'zstd -d < data.tar.zst | xz > data.tar.xz',
				'mv some-package.deb some-package.deb.bkp',
				'ar -v -m -c -a sdsd some-package.deb debian-binary control.tar.xz data.tar.xz',
				'rm debian-binary control.tar.xz data.tar.xz control.tar.zst data.tar.zst'
                 ];
		 for (const cmdT of cmdTemplates) {
			let cmd = cmdT.replaceAll('some-package.deb', file);
			console.log('run', cmd);
			await run(cmd);
		 }
	  }
	  return makeResults;	  
	}
	
  }

[VerteDinde]

This should be available in 3.2.0 and higher 🙂