Compare Octopus Deploy Project's current variables with last release's snapshot

Octopus - Diff Variables.linq

/*
	Diff's a project's variables with the snapshot associated with its latest release
  Need to include Octopus.Client nuget package
*/
var server = "http://my-octopus-server/";
var projectName = "my-project-name";
// Util.SetPassword("Octopus key for " + server, null);	// run this line to unsave the password (if it changes, or you stuff up the entry)
var apiKey = Util.GetPassword("Octopus key for " + server, false);

var endpoint = new Octopus.Client.OctopusServerEndpoint(server, apiKey);
var repository = new Octopus.Client.OctopusRepository(endpoint);
var project = repository.Projects.FindByName(projectName);

var currentRelease = 
	repository
	.Releases
	.FindMany(r => r.ProjectId == project.Id)
	.OrderByDescending(r => r.Assembled)
	.FirstOrDefault()
	;

new
{
	project.Name,
	project.Description,
	currentRelease.Version
}.Dump();

// Diff the project variables
var projectVariables = repository.VariableSets.Get(project.VariableSetId);
var releaseSnapshotVariables = repository.VariableSets.Get(currentRelease.ProjectVariableSetSnapshotId);
LINQPad.Util.Dif(
	releaseSnapshotVariables.Variables.OrderBy(v => v.Name).Select(v => new { v.Name, v.Scope, v.Type, v.Value }),
	projectVariables.Variables.OrderBy(v => v.Name).Select(v => new { v.Name, v.Scope, v.Type, v.Value })
).Dump("Difference (release -> latest)");

projectVariables.Variables.Select(v => v.Name).Except(releaseSnapshotVariables.Variables.Select(v => v.Name)).Dump("New variables, not present in release snapshot");

// Diff associated variable snapshots

var projectLibraryVariables = 
	project.IncludedLibraryVariableSetIds
	.Select(repository.LibraryVariableSets.Get)
	.Select(vs => vs.VariableSetId)
	.Select(repository.VariableSets.Get)
	.SelectMany(vs => vs.Variables)
	;

var releaseLibraryVariables =
	currentRelease.LibraryVariableSetSnapshotIds
	.Select(repository.VariableSets.Get)
	.SelectMany(vs => vs.Variables)
	;
	
LINQPad.Util.Dif(
	releaseLibraryVariables.OrderBy(v => v.Name).ThenBy(v => v.Scope.SelectMany(kvp => kvp.Value).FirstOrDefault()).Select(v => new { v.Name, v.Scope, v.Type, v.Value }),
	projectLibraryVariables.OrderBy(v => v.Name).ThenBy(v => v.Scope.SelectMany(kvp => kvp.Value).FirstOrDefault()).Select(v => new { v.Name, v.Scope, v.Type, v.Value })
).Dump("Library variables diff (release -> latest)");