terraform fmt workaround

See #97

README.md

@@ -37,6 +37,7 @@ quite tricky.
 ## Usage
 
 `$ cargo run -- --help`
+
 ```
 treefmt 0.1.1
 ✨  format all your language!

devshell.toml

@@ -16,12 +16,17 @@ packages = [
   # Code formatters
   "elmPackages.elm-format",
   "go",
-  "haskellPackages.ormolu",
   "haskellPackages.cabal-fmt",
+  "haskellPackages.ormolu",
   "nixpkgs-fmt",
   "nodePackages.prettier",
   "python3.pkgs.black",
   "shfmt",
+  "terraform",
   
   "mdbook"
 ]
+
+[[env]]
+name = "PATH"
+eval = "$PWD/target/debug:$PATH"

docs/formatters.md

@@ -125,3 +125,8 @@ options = [
 ]
 includes = ["*.sh"]
 ```
+
+## terraform
+
+terraform fmt only supports formatting one file at the time. See
+https://github.com/hashicorp/terraform/pull/28191

examples/terraform/main.tf

@@ -0,0 +1,4 @@
+
+resource "my_resource" "xxx" {
+  option = [1, 2, 3]
+}

examples/terraform/two.tf

@@ -0,0 +1,4 @@
+
+resource "other_resource" "xxx" {
+  xxx = "xxx"
+}

scripts/terraform-fmt

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+for path in "$@"; do
+  terraform fmt "$path"
+done

treefmt.toml

@@ -63,3 +63,7 @@ options = [
     "-w",  # write back to the file
 ]
 includes = ["*.sh"]
+
+[formatter.terraform]
+command = "./scripts/terraform-fmt"
+includes = ["*.tf"]