Fix arm64 CI Travis

[dennisameling]

Identify the Bug

See #347

Fixes #347

Description of the Change

After merging this PR, arm64 Linux Electron prebuilds will be created on a native arm64 host in Travis. This seems to be the only viable option for now, because apparently node-gyp doesn't support cross-compilation for other platforms than Windows (it builds without errors, but the final keytar.node is i686).

Alternate Designs

Possible Drawbacks

GitHub Actions doesn't support native arm64 hosted CI (yet), so the move from Travis to GH Actions might be a bit more painful after this change. Running a Docker container with QEMU emulation will work on GitHub Actions, but is much slower than a native arm64 host.

Verification Process

Release Notes

Repair arm64 Linux Electron prebuilds

[dennisameling]

@shiftkey any chance you could migrate this repo from travis-ci.org to travis-ci.com for the time being? They've migrated almost all capacity to .com now, resulting in incredibly long delays starting CI runs on .org. It's been 45+ mins and the run still hasn't started 😅

[shiftkey]

@dennisameling I've made the request but I'm not sure how long it'll take to migrate 🤷🏻

[joaomoreno]

This seems to be the only viable option for now, because apparently node-gyp doesn't support cross-compilation for other platforms than Windows (it builds without errors, but the final keytar.node is i686).

That doesn't sound right. We are compiling Electron-based native node modules for both arm64 and armhf in our VS Code pipelines. There must be some other issue here.

We use a simple crossbuild debian container image to cross compile directly, instead of rebuilding to the right arch after building to the wrong one. Given the right disturl, target, runtime and arch, the right .node will be compiled from the get go.

[dennisameling]

Woah @joaomoreno, didn't know that was possible! Thanks for sharing! Created a new PR that cross-compiles arm64 from an x64 host: #352 - just had to add STRIP=/usr/bin/aarch64-linux-gnu-strip as node-keytar also strips the binaries.

Closing this PR in favor of the newer one 👍🏼

[joaomoreno]

@dennisameling My reaction as well, the first time I saw that solution. 👀 Glad I could share some love.