Allow people to fully override the seed repo

CHANGELOG.md

@@ -7,7 +7,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased][]
 
-[Unreleased]: https://github.com/atomist/sdm/compare/0.1.0...HEAD
+[Unreleased]: https://github.com/atomist/sdm/compare/0.2.3...HEAD
+
+### BREAKING
+
+-   SeedDrivenGeneratorSupport allows you to override the seed. This fixes a bug with overriding the seed name,
+and also adds the ability to override the owner. Only GitHub repositories are supported.
+This changes the type of GeneratorConfig.seed; give it a function that returns a _new_ seed repoRef, instead of a constant one. 
+
+## Earlier
 
 ### Added
 

src/api/command/generator/GeneratorConfig.ts

@@ -24,7 +24,7 @@ export interface GeneratorConfig {
     /**
      * The seed repo
      */
-    seed: RemoteRepoRef;
+    seed: () => RemoteRepoRef;
 
     /**
      * Add an Atomist webhook to new repos?

src/api/command/generator/SeedDrivenGeneratorParametersSupport.ts

@@ -53,15 +53,25 @@ export class SeedDrivenGeneratorParametersSupport implements SeedDrivenGenerator
     public version: string = "0.1.0-SNAPSHOT";
 
     @Parameter({
-        displayName: "Seed repo",
-        description: "Seed repo",
+        displayName: "Seed repository override",
+        description: "Seed repository name",
         ...GitHubNameRegExp,
         minLength: 1,
         maxLength: 50,
         required: false,
     })
     public seed: string;
 
+    @Parameter({
+        displayName: "Seed repository owner override",
+        description: "Seed repository owner",
+        ...GitHubNameRegExp,
+        minLength: 1,
+        maxLength: 50,
+        required: false,
+    })
+    public seedOwner: string;
+
     public target: NewRepoCreationParameters = new GitHubRepoCreationParameters();
 
     @MappedParameter(MappedParameters.SlackTeam)
@@ -76,8 +86,9 @@ export class SeedDrivenGeneratorParametersSupport implements SeedDrivenGenerator
      * @return {RemoteLocator}
      */
     get source(): RemoteLocator {
-        const repoRef = this.config.seed;
+        const repoRef = this.config.seed();
         repoRef.repo = this.seed || repoRef.repo;
+        repoRef.owner = this.seedOwner || repoRef.owner;
         return {repoRef};
     }