String interpolations when specifying required_version

[ajlanghorn]

Hello,

I've just started working on a team with a repository which has a .terraform-version file in, which is consumed by tfenv. tfenv works in a very similar fashion to tools such as rbenv, in that it wraps installation and management of a particular version of Terraform.

I refactored a bit of our code base to make use of required_version in the terraform block, as per the docs, but wanted to read in the value from the .terraform-version file, which just contains the version:

$ cat .terraform-version
0.9.3

Unfortunately, it seems the required_version parameter doesn't accept string interpolations, so I can't read the version in using:

terraform {
   required_version = "${file(".terraform-version")}"
}

Is there a reason required_version doesn't accept string interpolations?

Cheers,

Andrew

[jbardin]

Hi @ajlanghorn,

This is working as intended or now. The terraform config is loaded very early on, before any interpolation is done.

We can track the feature request with an existing issue at #13022

[mhowell-ims]

I'm trying to do the same thing, with the same result.

[ghost]

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