Desktop wallet release workflow fails: action-electron-builder does not support PNPM but only NPM and Yarn

[nop33]

We've relied on the GitHub action samuelmeuli/action-electron-builder for many years to build/sign/release our desktop wallet, while using NPM as our package manager and script runner. It was discovered by @killerwhile who wrote the initial GitHub workflow to sign our app. Since then, we've had some issues with this action, because the action is not actively maintained.

• Fix node deprecation warning due to samuelmeuli/action-electron-builder #65

We decided to switch to a fork: coparse-inc/action-electron-builder.

Then, after migrating to a monorepo with Bun instead of NPM, we faced new issues:

• Building desktop wallet on Windows VM in CI fails (Bun not available on Windows) #5
• action-electron-builder does not support Bun but only NPM and Yarn
  • We mitigated this issue by using bun install --yarn to convert the Bun lockfile to a Yarn lockfile and use Yarn instead of Bun to build/sign/release our app.

Now, after switching from Bun to PNPM we are facing a new issue:

coparse-inc/action-electron-builder does not support PNPM but only NPM and Yarn

While PNPM has an import command to import convert lockfiles generated with other package managers to a PNPM lockfile, it doesn't have an export command to do the opposite (like bun install --yarn). I could only find a separate CLI utility that can generate an NPM lockfile from a PNPM lock file.

• Generating package-lock or yarn.lock  pnpm/pnpm#5926
• https://github.com/orgs/pnpm/discussions/3367

To mitigate this, I create a PR in the coparse-inc/action-electron-builder repo to add support for PNPM: macro-inc/action-electron-builder#1

How to proceed

I see the following options:

1. Wait for coparse-inc to merge our PR and release a new version of coparse-inc/action-electron-builder
2. Use our own action-electron-builder by releasing it on GitHub Actions Marketplace
3. 👎 Switch yet to another package manager like Yarn or NPM

What are others using

While researching a solution for #5 most references I found for building electron apps on GitHub CI point to the same GitHub action samuelmeuli/action-electron-builder. Ledger Live is also an Electron app in a monorepo that uses PNPM and they use their own scripts to build/sign/release.