snapd should provide SNAP_ARCH_TRIPLET

[Alan Pope 🍺🐧🐱 🦄]

I frequently need to setup an environment variable (or multiple) to paths which include the typical arch triplets like x86_64-linux-gnu. snapd only exposes SNAP_ARCH which needs to be interpreted by shell scripts into a triplet. This seems mad that every snap which has a need to modify an environment variable in the snapcraft.yaml has to either build a launch script, or include a cloud launch script rather than have access to the triplet directly.

Please can we add SNAP_ARCH_TRIPLET rather than have to rely on shell scripts to set these up, in every snap.

[Kyle Fazzari (kyrofa)]

I second this request, it's a constant paper cut.

[Michael Vogt (mvo)]

https://github.com/snapcore/snapd/pull/4477

[Paweł Stołowski (stolowski)]

The abovementioned PR was rejected and closed, I don't think there was any other solution on the table. Re-opening.