Bug: Tfswitch not following documented precedence

[prashantkalkar]

I am using the tfswitch for terraform module development. As part of the development, we set the required terraform version in the .tfswitchrc file.

The .tfswitchrc file is set as follows.

1.8.5

The terraform versions.tf file is configured as follows:

terraform {
  required_version = ">= 1.8.5"
  ...
  }
}

The intension behind this setup is that. The module can be used by any terraform code >= 1.8.5 but during the module development itself the TF version should be fixed at 1.8.5. Ensuring tf version at 1.8.5 during module development ensures that module does not include any newer TF features which will break older clients which are on 1.8.5.

This earlier used to work but recently during tfswitch its choosing latest TF version:

$ tfswitch
17:18:43.624 INFO Reading configuration from "<REDACTED>/.tfswitchrc"
17:18:43.631 INFO Reading version from Terraform module at "."
17:18:43.736 INFO Reading required version from constraint: ">= 1.8.5"
17:18:43.737 INFO Matched version: "1.9.2"
17:18:43.737 INFO Switched Terraform to version "1.9.2"

This breaks the precedent order documented at: https://tfswitch.warrensbox.com/usage/general/

Please let me know if this expected or a regression bug.

[yermulnik]

@prashantkalkar It looks like we've missed to adjust docu when we had made the change and the order of precedence left reversed in the docu (see this discussion for details on the order).

The resolution for your use case would be to switch from TOML config file to TF_VERSION env var to override required version explicitly and forcibly.

[yermulnik]

PR: #492