chore: set up more required vars

Author: samrose

.github/workflows/ami-release-nix.yml

@@ -88,7 +88,7 @@ jobs:
           packer init stage2-nix-psql.pkr.hcl
           GIT_SHA=${{github.sha}}
           POSTGRES_MAJOR_VERSION=${{ env.POSTGRES_MAJOR_VERSION }}
-          packer build -var "git_sha=${GIT_SHA}" -var "git-head-version=${GIT_SHA}" -var "packer-execution-id=${GITHUB_RUN_ID}" -var-file="development-arm.vars.pkr.hcl" -var-file="common-nix.vars.pkr.hcl" stage2-nix-psql.pkr.hcl
+          packer build -var "git_sha=${GIT_SHA}" -var "git-head-version=${GIT_SHA}" -var "packer-execution-id=${GITHUB_RUN_ID}" -var "postgres_major_version=${POSTGRES_MAJOR_VERSION}" -var-file="development-arm.vars.pkr.hcl" -var-file="common-nix.vars.pkr.hcl" stage2-nix-psql.pkr.hcl
 
       - name: Grab release version
         id: process_release_version

stage2-nix-psql.pkr.hcl

@@ -46,6 +46,11 @@ variable "git_sha" {
   default = env("GIT_SHA")
 }
 
+variable "postgres_major_version" {
+  type    = string
+  default = ""
+}
+
 packer {
   required_plugins {
     amazon = {
@@ -133,7 +138,8 @@ build {
 
   provisioner "shell" {
     environment_vars = [
-      "GIT_SHA=${var.git_sha}"
+      "GIT_SHA=${var.git_sha}",
+      "POSTGRES_MAJOR_VERSION=${var.postgres_major_version}"
     ]
      script = "scripts/nix-provision.sh"
   }