update terraform install guide about bsl license

_docs/ci/azure/push.md

@@ -59,8 +59,8 @@ We then use two `script` steps to run bash scripts. The first script calls the s
     # install terraform
     git clone https://github.com/tfutils/tfenv.git ~/.tfenv
     export PATH="$HOME/.tfenv/bin:$PATH"
-    tfenv install latest
-    tfenv use latest
+    tfenv install 1.5.5 # do not use later than 1.5.5
+    tfenv use 1.5.5
     terraform --version
 
     # install terraspace

_docs/ci/bitbucket/push.md

@@ -36,8 +36,8 @@ A good bit of the logic is in the `.bitbucket/bin` supporting files. The install
     # install terraform
     git clone https://github.com/tfutils/tfenv.git ~/.tfenv
     export PATH="$HOME/.tfenv/bin:$PATH"
-    tfenv install latest
-    tfenv use latest
+    tfenv install 1.5.5 # do not use later than 1.5.5
+    tfenv use 1.5.5
     terraform --version
     # install terraspace
     bundle

_docs/ci/circleci/push.md

@@ -53,8 +53,8 @@ The first part installs terraform and terraspace with a supporting script that l
     # install terraform
     git clone https://github.com/tfutils/tfenv.git ~/.tfenv
     export PATH="$HOME/.tfenv/bin:$PATH"
-    tfenv install latest
-    tfenv use latest
+    tfenv install 1.5.5 # do not use later than 1.5.5
+    tfenv use 1.5.5
 
     # install terraspace
     bundle install

_docs/ci/github/push.md

@@ -59,8 +59,8 @@ The install script installs Terraform, Terraspace, and infracost. It looks somet
 
     # install terraform
     brew install tfenv
-    tfenv install latest
-    tfenv use latest
+    tfenv install 1.5.5 # do not use later than 1.5.5
+    tfenv use 1.5.5
     terraform --version
 
     # install terraspace

_docs/ci/gitlab/push.md

@@ -21,8 +21,8 @@ before_script: |
   git clone https://github.com/tfutils/tfenv.git ~/.tfenv
   echo 'export PATH="$HOME/.tfenv/bin:$PATH"' >> ~/.bash_profile
   export PATH="$HOME/.tfenv/bin:$PATH"
-  tfenv install latest
-  tfenv use latest
+  tfenv install 1.5.5 # do not use later than 1.5.5
+  tfenv use 1.5.5
   terraform --version
   # install terraspace
   bundle

_docs/install/terraform.md

@@ -6,14 +6,18 @@ This pages shows you different ways to install Terraform.
 
 ## Install via tfenv
 
-The recommended way to install terraform is with tfenv. This allows you to chose and switch versions of Terraform easily. Here are the commands:
+The recommended way to install terraform is with tfenv. This allows you to choose and switch versions of Terraform easily. Here are the commands:
 
     git clone https://github.com/tfutils/tfenv.git ~/.tfenv
     echo 'export PATH="$HOME/.tfenv/bin:$PATH"' >> ~/.bash_profile
     export PATH="$HOME/.tfenv/bin:$PATH"
-    tfenv install latest
-    tfenv use latest
+    tfenv install 1.5.5 # do not use later than 1.5.5
+    tfenv use 1.5.5
 
 ## Install via Terraform Download
 
-The [Terraform installation instructions](https://www.terraform.io/downloads.html) provides steps to download and install terraform for your system.
+The [Terraform installation instructions](https://www.terraform.io/downloads.html) provide steps to download and install terraform for your system.
+
+## Terraform BSL License Change
+
+{% include terraform/license.md %}

_docs/terraform/license.md

@@ -0,0 +1,5 @@
+---
+title: "Terraform BSL License Change"
+---
+
+{% include terraform/license.md %}

_includes/sidebar.html

@@ -447,6 +447,7 @@
           <li><a href="{% link _docs/conduct.md %}">Conduct</a></li>
         </ul>
       </li>
+      <li><a href="{% link _docs/terraform/license.md %}">Terraform License</a></li>
       <li><a href="{% link reference.md %}">CLI Reference</a></li>
     </ul>
   </div>

_includes/terraform/license.md

@@ -0,0 +1,13 @@
+The new [Terraform BSL license announcement](https://www.hashicorp.com/blog/hashicorp-adopts-business-source-license) on August 10, 2023 restricts usage of future terraform versions from being used with offerings Hashicorp deems competitive to their own solutions. Here's the [Terraform license](https://github.com/hashicorp/terraform/blob/main/LICENSE). Terraform 1.5.5 and below are unaffected.
+
+To address this, terraspace errs on the side of [prudence](https://community.boltops.com/t/future-of-terraspace-with-the-terraform-bsl-license-change/1080).
+
+1. We're telling users to use Terraform 1.5.5 and below with Terraspace.
+2. The Terraspace framework CLI checks on the client side and only allows Terraform 1.5.5 and below usage by default. You can bypass the check if your usage is acceptable with the BSL, but you must explicitly do so.
+3. For [Terraspace Cloud](https://app.terraspace.cloud/), you cannot use the newer Terraform versions. Whether or not you bypass the check, Terraspace Cloud does not allow the use of any Terraform versions greater than 1.5.5. The API will deny requests and prevent data from saving on the Cloud backend side entirely.
+
+You have **full** control over the Terraform installation since `terraspace` and `terraform` run entirely from your machine. It's just a matter of installing the Terraform version that Hashicorp considers acceptable for your use case.
+
+There's an [opentf manifesto](https://opentf.org/) that will likely result in a Terraform fork. We recommend using that fork once it's available.
+
+If you are within acceptable usage, you can bypass the check with `TS_VERSION_CHECK=0`. However, Terraspace will develop and test against Terraform 1.5.5 and below and future Terraform forks only.