These changes implement `GetRequiredPlugins` for Go using a registry
mechanism and an alternate entry point for `pulumi.Run`. Packages that
require plugins are expected to register themselves with the Pulumi SDK.
When `pulumi.Run` is used and the `PULUMI_PLUGINS` envvar is truthy, the
program will dump a JSON-encoded description of its required plugins to
stdout. The language host then uses this description to respond to
The changes in #4004 caused old provider configuration to be used even when a provider was different between inputs and outputs, in the case that the diff returned DiffUnkown.
To better handle that case, we compute a more accurate (but still conservative) DiffNone or DiffSome so that we can ensure we conservatively update to a new provider when needed, but retain the performance benefit of not creating and configuring a new provider as much as possible.
Part of https://github.com/pulumi/pulumi-aws/issues/814.
Fixes: https://github.com/pulumi/pulumi-terraform-bridge/issues/119
This allows us to specify an overlays block e.g.
```
Overlay: &tfbridge.OverlayInfo{
DestFiles: []string{
"pulumi_docker/docker.py",
"pulumi_docker/image.py",
},
},
```
The overlays files are treated differently to normal module files
as they are not generated. This structure means that we will emit
the correct entries in the __init__.py file
Without this structure (ie. pulumi_pkgname), the generator actually
copies the file (i.e. docker.py) to the root of the Python SDK. This
is because the structure of the Python SDK has a sub-folder than that
of the NodeJS SDK
I tested this using PR https://github.com/pulumi/pulumi-docker/pull/141
and this now works as expected and we can take advantage of the new
Python overlays for Docker
These changes implement `GetRequiredPlugins` for Go using a registry
mechanism and an alternate entry point for `pulumi.Run`. Packages that
require plugins are expected to register themselves with the Pulumi SDK.
When `pulumi.Run` is used and the `PULUMI_PLUGINS` envvar is truthy, the
program will dump a JSON-encoded description of its required plugins to
stdout. The language host then uses this description to respond to
`GetRequiredPlugins`.
