Every European cloud needs an emulator

One binary. One port. No account, no bill.

AWS has LocalStack. Azure has Azurite. European clouds have had nothing, and their users test against a paying account or not at all.

feint emulates their APIs so that SDKs, CLIs and Terraform run against your laptop. Scaleway, Outscale and Exoscale are the first three — the architecture exists so a fourth changes nothing outside its own pack, and the scan that keeps them honest reads whatever SDK or API description that provider publishes.

The name is the fencing move: feinte, from Old French feindre — a movement made to look like the real one, so the opponent commits. That is the whole test here. The official client commits, and cannot tell.

The mark draws the same argument: a solid line for the surface actually served, a dashed one leaving the same corner at the same angle for what the provider announced and nobody has driven yet. docs/brand.md has the files and what may be done with them.

feint serve
#  feint dev listening on 127.0.0.1:4599
#    scaleway  55 routes
#    outscale  20 routes
#    exoscale  14 routes
#    machines  none

That is one endpoint for three clouds. They do not collide in URL space — Scaleway serves //v/…, Outscale POST /api/v1/, Exoscale /v2/ — so one http.ServeMux hosts all three, and the server refuses to start if two packs claim the same route.

Every command in that recording really ran: the emulator starts, the official scw CLI creates a server, the official Terraform provider applies a configuration through api_url, and the emulator stops. It is generated from tools/demo/quickstart.tape with mise run demo, so a command that breaks breaks the demo. A recording nobody can re-run is a claim, and the whole argument here is that a claim is not a proof.

A second tape covers the part