From 692287755f8063fe14c846f2f2b4445a905927b6 Mon Sep 17 00:00:00 2001
From: Matt Fishman <mtfishman@users.noreply.github.com>
Date: Tue, 14 May 2024 13:35:55 -0400
Subject: [PATCH] Define ITensorMPS.Experimental.dmrg (#10)

---
 Project.toml        | 2 +-
 src/Deprecated.jl   | 3 +++
 src/Experimental.jl | 3 +++
 src/ITensorMPS.jl   | 8 +++++---
 test/runtests.jl    | 3 ++-
 5 files changed, 14 insertions(+), 5 deletions(-)
 create mode 100644 src/Deprecated.jl
 create mode 100644 src/Experimental.jl

diff --git a/Project.toml b/Project.toml
index 8a00067..bf87762 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "ITensorMPS"
 uuid = "0d1a4710-d33b-49a5-8f18-73bdf49b47e2"
 authors = ["Matthew Fishman <mfishman@flatironinstitute.org>", "Miles Stoudenmire <mstoudenmire@flatironinstitute.org>"]
-version = "0.1.7"
+version = "0.1.8"
 
 [deps]
 ITensorTDVP = "25707e16-a4db-4a07-99d9-4d67b7af0342"
diff --git a/src/Deprecated.jl b/src/Deprecated.jl
new file mode 100644
index 0000000..d56b368
--- /dev/null
+++ b/src/Deprecated.jl
@@ -0,0 +1,3 @@
+module Deprecated
+using ITensors.ITensorMPS: dmrg
+end
diff --git a/src/Experimental.jl b/src/Experimental.jl
new file mode 100644
index 0000000..42be6dc
--- /dev/null
+++ b/src/Experimental.jl
@@ -0,0 +1,3 @@
+module Experimental
+using ITensorTDVP: dmrg
+end
diff --git a/src/ITensorMPS.jl b/src/ITensorMPS.jl
index 5f7fcba..6f5097b 100644
--- a/src/ITensorMPS.jl
+++ b/src/ITensorMPS.jl
@@ -1,12 +1,15 @@
 module ITensorMPS
 using Reexport: @reexport
 @reexport using ITensorTDVP: TimeDependentSum, dmrg_x, linsolve, tdvp, to_vec
-using ITensorTDVP: ITensorTDVP
-const alternating_update_dmrg = ITensorTDVP.dmrg
 # Not re-exported, but this makes these types and functions accessible
 # as `ITensorMPS.x`.
 using ITensors.ITensorMPS:
   AbstractProjMPO, AbstractSum, ProjMPS, makeL!, makeR!, set_terms, sortmergeterms, terms
+include("Experimental.jl")
+using .Experimental: Experimental
+include("Deprecated.jl")
+using .Deprecated: Deprecated, dmrg
+export dmrg
 @reexport using ITensors.ITensorMPS:
   @OpName_str,
   @SiteType_str,
@@ -63,7 +66,6 @@ using ITensors.ITensorMPS:
   cutoff,
   cutoff!, # deprecate
   disk,
-  dmrg,
   dot, # remove export
   eigs, # deprecate
   energies, # deprecate
diff --git a/test/runtests.jl b/test/runtests.jl
index b03ae99..2459086 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -18,7 +18,8 @@ using Test: @test, @test_broken, @testset
     )
   end
   @testset "Aliases" begin
-    @test ITensorMPS.alternating_update_dmrg === ITensorTDVP.dmrg
+    @test ITensorMPS.Experimental.dmrg === ITensorTDVP.dmrg
+    @test ITensorMPS.dmrg === ITensors.ITensorMPS.dmrg
   end
   @testset "Not exported" begin
     @test ITensorMPS.sortmergeterms === ITensors.ITensorMPS.sortmergeterms