fix(provider): coalesce arch to armv7 if on 32-bit arm (coder#210)

This PR modifies the `coder_provisioner` datasource to return `arch` as `armv7` if `GOARCH=arm`. This fixes an issue where users on 32-bit arm platforms would be unable to create a template with ``` resource "coder_agent" "main" { arch = data.coder_provisioner.me.arch ... } ``` and would instead need to manually specify ``` resource "coder_agent" "main" { arch = "armv7" ... } ```

Author: johnstcn

docs/resources/agent_instance.md

@@ -3,7 +3,7 @@
 page_title: "coder_agent_instance Resource - terraform-provider-coder"
 subcategory: ""
 description: |-
- Use this resource to associate an instance ID with an agent for zero-trust authentication. This association is done automatically for "googlecomputeinstance", "awsinstance", "azurermlinuxvirtualmachine", and "azurermwindowsvirtual_machine" resources.
+ Use this resource to associate an instance ID with an agent for zero-trust authentication. This association is done automatically for "google_compute_instance", "aws_instance", "azurerm_linux_virtual_machine", and "azurerm_windows_virtual_machine" resources.
 ---
 
 # coder_agent_instance (Resource)

provider/provisioner.go

@@ -16,6 +16,10 @@ func provisionerDataSource() *schema.Resource {
 rd.SetId(uuid.NewString())
 rd.Set("os", runtime.GOOS)
 rd.Set("arch", runtime.GOARCH)
+// Fix for #11782: if we're on 32-bit ARM, set arch to armv7.
+if runtime.GOARCH == "arm" {
+rd.Set("arch", "armv7")
+}
 
 return nil
 },

provider/provisioner_test.go

@@ -31,9 +31,14 @@ func TestProvisioner(t *testing.T) {
 
 attribs := resource.Primary.Attributes
 require.Equal(t, runtime.GOOS, attribs["os"])
-require.Equal(t, runtime.GOARCH, attribs["arch"])
+if runtime.GOARCH == "arm" {
+require.Equal(t, "armv7", attribs["arch"])
+} else {
+require.Equal(t, runtime.GOARCH, attribs["arch"])
+}
 return nil
 },
 }},
 })
 }
+