Setting up CodePipeline template to deploy CloudFormation stack from CodeCommit - aws-cloudformation

Question

From a CloudFormation template, you can deploy CodeCommit and CodePipeline. From this announcement,
You can now choose AWS CloudFormation as a deployment action in your release workflows built using AWS CodePipeline.
I've worked out most of the Cloudformation Template, but I can't figure out the stages.
Resources:
PipelineRepo:
Type: AWS::CodeCommit::Repository
Properties:
RepositoryName: pipeline
RepositoryDescription: Pipeline setup repo
PipelineArtifacts:
Type: AWS::S3::Bucket
PipelineRole:
Type: AWS::IAM::Role
Pipeline:
Type: AWS::CodePipeline::Pipeline
Properties:
Name: pipeline-pipeline
ArtifactStore:
Type: S3
Location:
Ref: PipelineArtifacts
RoleArn:
Ref: PipelineRole
Stages:
... STAGES ...
How do you set up the stages to track CodeCommit and then deploy a CloudFormation template from a file in the repo?

Answer 1

Offical Documentation:
The IAM Role is broken too. Below is a functioning stack. For various types of CF deployments, see the CF Configuration Properties. A helpful sample CF stack is here.
Resources:
PipelineRepo:
Type: AWS::CodeCommit::Repository
Properties:
RepositoryName: pipeline
RepositoryDescription: Pipeline setup repo
PipelineArtifacts:
Type: AWS::S3::Bucket
PipelineRole:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Principal:
Service:
- codepipeline.amazonaws.com
- cloudformation.amazonaws.com
Action: sts:AssumeRole
Policies:
- PolicyName: CloudPipelinePolicy
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action: "cloudformation:*"
Resource: "*"
- Effect: Allow
Action: "codecommit:*"
Resource: "*"
- Effect: Allow
Action: "s3:*"
Resource: "*"
- Effect: Allow
Action:
- iam:PassRole
Resource: "*"
Pipeline:
Type: AWS::CodePipeline::Pipeline
Properties:
Name: pipeline-pipeline
ArtifactStore:
Type: S3
Location:
Ref: PipelineArtifacts
RoleArn: !GetAtt [PipelineRole, Arn]
Stages:
-
Name: Source
Actions:
-
Name: CheckoutSourceTemplate
ActionTypeId:
Category: Source
Owner: AWS
Version: 1
Provider: CodeCommit
Configuration:
PollForSourceChanges: True
RepositoryName: !GetAtt [PipelineRepo, Name]
BranchName: master
OutputArtifacts:
- Name: TemplateSource
RunOrder: 1
-
Name: Deploy
Actions:
-
Name: CreateStack
ActionTypeId:
Category: Deploy
Owner: AWS
Provider: CloudFormation
Version: 1
InputArtifacts:
- Name: TemplateSource
Configuration:
ActionMode: CREATE_UPDATE
RoleArn: !GetAtt [PipelineRole, Arn]
StackName: pipeline
Capabilities: CAPABILITY_IAM
TemplatePath: TemplateSource::template.yml
RunOrder: 1