We have our terraform projects structured like so:

dev/
  <http://moduleA.tf|moduleA.tf>
  <http://moduleB.tf|moduleB.tf>
prod/
  <http://moduleA.tf|moduleA.tf>
  <http://moduleC.tf|moduleC.tf>

Is there an easy way to make the config file treat each individual module as a project, so we can get cost estimates per module? So the projects would be like

dev-moduleA

,

dev-moduleB

etc? Or is there another/better way to get a cost breakdown per module inside of a project?

Hello! You can try using the config template: https://www.infracost.io/docs/features/config_file/#template-syntax

I tried using this range loop based off the documentation, but it seems like it's not parsing correctly

version: 0.1

projects:
{{- range $project := matchPaths ":env/:<http://module.tf|module.tf>" }}
  - path: .
    name: {{ $project.module }}-{{ $project.env }}
{{- end }}

Resulting in

Infracost generate config failed.

/usr/local/bin/infracost command was closed with a non 0 exit code: Error: could not parse template: "version: 0.1\n\nprojects:\n{{- range $project := matchPaths env/module.tf }}\n - path: .\n name: {{ $project.module }}-{{ $project.env }}\n{{- end }}" err: template: infracost.yml.tmpl4 expected :=

Can you try this?

version: 0.1
projects:
{{- range $project := matchPaths ":env/:file" }}
  - path: {{ $project._path }}
    name: {{ $project.env }}-{{ stem $project.file }}
{{- end }}

That does give the desired list, however it seems that all the estimate values are $0 and there is no breakdown. So I guess that the projects list expects the path to be a directory rather than a singular file?

Yep, sorry, I forgot that

--path

requires a directory.

It would be an interesting experiment 😄

So we could specify the directory

dev/

but keep only one file in each project

Thanks, appreciate the help and efforts so far!

Hey, so I've asked our main config guy about this. Unfortunately, CLI doesn't support that kind of thing yet, sorry.