As explained in the changes: The 'enhanced' backend terminology, which
only truly pertains to the 'remote' backend with a single API (Terraform
Cloud/Enterprise's), has been found to be a confusing vestige which need
only be explained in the context of the 'remote' backend.
These changes reorient the explanation(s) of backends to pertain more
directly to their primary purpose, which is storage of state snapshots
(and not implementing operations).
That Terraform operations are still _implemented_ by the literal
`Backend` and `Enhanced` interfaces is inconsequential a user of
Terraform, an internal detail.
* Update Godoc links from godoc.org to pkg.go.dev
* Update reference to renamed GraphNodeResource interface
Ref hashicorp/terraform#24389
* Update dead links; minor formatting adjustments
* Add FIXME item following deprecation of EvalNode
Previously we were using the experimental HCL 2 repository, but now we'll
shift over to the v2 import path within the main HCL repository as part of
actually releasing HCL 2.0 as stable.
This is a mechanical search/replace to the new import paths. It also
switches to the v2.0.0 release of HCL, which includes some new code that
Terraform didn't previously have but should not change any behavior that
matters for Terraform's purposes.
For the moment the experimental HCL2 repository is still an indirect
dependency via terraform-config-inspect, so it remains in our go.sum and
vendor directories for the moment. Because terraform-config-inspect uses
a much smaller subset of the HCL2 functionality, this does still manage
to prune the vendor directory a little. A subsequent release of
terraform-config-inspect should allow us to completely remove that old
repository in a future commit.
This doc was originally written in the middle of Terraform v0.12
development while some refactoring was already in progress. Here we update
those parts to refer to where the relevant functionality finally landed,
and also update some things that we did not anticipate changing at the
time but ended up having to be changed during the v0.12 development
anyway.
For a while now we've been gathering some codebase-level docs that felt
out-of-place on the main Terraform website (since they are about the
implementation, not usage) but we had no existing suitable place to put
them.
In order to make this information more available (and, hopefully, more
likely to stay up-to-date as we change things), here we'll establish the
"docs" directory as a place to keep documentation aimed at those who are
working on code changes to the Terraform Core codebase.
User-oriented docs should never appear in this directory. The Terraform
website is always the better place for those. The set of docs here is
rudimentary to start and we'll see if it makes sense to expand and
reorganize it over time based on the experience with having these initial
docs available.
