[Feat] 1 s3 backend

lib/backends/make/mkBackendResource.dhall

@@ -16,6 +16,9 @@ let mkBackendResource
           , remote =
               \(x : RemoteBackend.Type) ->
                 [ { mapKey = "remote", mapValue = Backends.remote x } ]
+          , s3 = 
+              \(x: RemoteBackend.Type) ->
+                [ { mapKey = "s3", mapValue = Backends.s3 x}]
           }
           body
 

lib/backends/package.dhall

@@ -8,12 +8,15 @@ let BackendNames = ./typeUnions/backend_names.dhall
 
 let mkBackendResource = ../backends/make/mkBackendResource.dhall
 
+let S3Backend = ./types/s3.dhall
+
 let BackendResourceName
     : BackendNames -> Text
     = \(b : BackendNames) ->
         merge
           { local = \(_ : LocalBackend.Type) -> "local"
           , remote = \(_ : RemoteBackend.Type) -> "remote"
+          , s3 = \(_: S3Backend.Type) -> "s3"
           }
           b
 

lib/backends/typeUnions/backend_names.dhall

@@ -2,4 +2,6 @@ let LocalBackend = ./../types/local.dhall
 
 let RemoteBackend = (./../types/remote.dhall).RemoteBackend
 
-in  < local : LocalBackend.Type | remote : RemoteBackend.Type >
+let S3Backend = (./../types/s3.dhall)
+
+in  < local : LocalBackend.Type | remote : RemoteBackend.Type | s3 : S3Backend.Type >

lib/backends/types/s3.dhall

@@ -0,0 +1,66 @@
+let Map = https://prelude.dhall-lang.org/v20.2.0/Map/Type
+let List = https://prelude.dhall-lang.org/v20.2.0/List/Type
+let S3Backend = 
+  {
+    Type = 
+      { bucket : Text
+      , key : Text
+      , region : Text 
+      , dynamodb_endpoint: Optional Text
+      , endpoint: Optional Text
+      , iam_endpoint: Optional Text
+      , sts_endpoint: Optional Text
+      , encrypt: Optional Bool
+      , acl: Optional Text
+      , access_key: Optional Text
+      , secret_key: Optional Text
+      , kms_key_id: Optional Text
+      , dynamodb_table: Optional Text
+      , profile: Optional Text
+      , shared_credentials_file: Optional Text
+      , token: Optional Text
+      , skip_credentials_validation: Optional Bool
+      , skip_region_validation: Optional Bool
+      , skip_metadata_api_check: Optional Bool
+      , sse_customer_key: Optional Text
+      , role_arn: Optional Text
+      , session_name: Optional Text
+      , external_id: Optional Text
+      , assume_role_duration_seconds: Optional Integer
+      , assume_role_policy: Optional Text
+      , assume_role_policy_arns: Optional List Text Text
+      , assume_role_tags: Optional Map Text Text
+      , assume_role_transitive_tag_keys: Optional List Text Text
+      , workspace_key_prefix: Optional Text
+      , force_path_style: Optional Bool
+      , max_retries: Optional Integer
+      } 
+  , default =
+      { region: env:AWS_REGION as Text ? env:AWS_DEFAULT_REGION as Text ? None Text
+      , dynamodb_endpoint: Some env:AWS_DYNAMODB_ENDPOINT as Text ? None Text
+      , endpoint: Some env:AWS_S3_ENDPOINT as Text ? None Text
+      , iam_endpoint: Some env:AWS_IAM_ENDPOINT as Text ? None Text
+      , sts_endpoint: Some env:AWS_STS_ENDPOINT as Text ? None Text
+      , encrypt: Some False
+      , acl: None Text
+      , access_key: None Text
+      , secret_key: None Text
+      , kms_key_id: None Text
+      , dynamodb_table: None Text
+      , profile: None Text
+      , shared_credentials_file: None Text
+      , token: None Text
+      , skip_credentials_validation: Some False
+      , skip_region_validation: Some False
+      , skip_metadata_api_check: Some False
+      , sse_customer_key: Some env:AWS_SSE_CUSTOMER_KEY as Text ? None Text
+      , role_arn: None Text
+      , session_name: None Text
+      , external_id: None Text
+      , assume_role_policy: None Text
+      , workspace_key_prefix: Some "env:"
+      , force_path_style: Some False
+      , max_retries: Some 5
+      }
+  }
+in  S3Backend

shell.nix

@@ -1,31 +1,9 @@
 { pkgs ? import <nixpkgs> {}}:
-let
-    dhall-terraform-libgen = import (
-        pkgs.fetchFromGitHub {
-            owner = "emattiza";
-            repo = "dhall-terraform";
-            rev = "d6fb3d8bc6100582567157e00297da88855b71fa";
-            sha256 = "1vmll5a00wl3zfr0dk6gv327qla1kf1jb0hjkpb316629a21d2ph";
-        }
-    ) {
-      nixpkgs = pkgs;
-    };
-    terraform_1_0 = pkgs.terraform_0_15.overrideAttrs (old: rec {
-        version = "v1.0.0";
-        src = pkgs.fetchFromGitHub {
-            owner = "hashicorp";
-            repo = "terraform";
-            rev = "v1.0.0";
-            sha256 = "1yhkj8nqkciwka6y9ddczm5dygbhh8gq4mr82x55m7whipy17mvm";
-        };
-    });
-in
 pkgs.mkShell {
     buildInputs = with pkgs; [
          jq
-         terraform_1_0
          dhall
          dhall-json
-         dhall-terraform-libgen
+         terraform
         ];
 }