From ae8f3499f9d86cdf0178c1023d59327c3e8197a9 Mon Sep 17 00:00:00 2001
From: mtfishman <mfishman@flatironinstitute.org>
Date: Mon, 24 Nov 2025 15:30:44 -0500
Subject: [PATCH 1/3] Upgrade to TensorAlgebra v0.5

---
 Project.toml      | 4 ++--
 test/Project.toml | 5 ++++-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/Project.toml b/Project.toml
index 6d636b7..d38a9e0 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "BlockSparseArrays"
 uuid = "2c9a651f-6452-4ace-a6ac-809f4280fbb4"
-version = "0.10.11"
+version = "0.10.12"
 authors = ["ITensor developers <support@itensor.org> and contributors"]
 
 [deps]
@@ -44,7 +44,7 @@ MapBroadcast = "0.1.5"
 MatrixAlgebraKit = "0.6"
 SparseArraysBase = "0.7.1"
 SplitApplyCombine = "1.2.3"
-TensorAlgebra = "0.3, 0.4"
+TensorAlgebra = "0.3, 0.4, 0.5"
 TensorProducts = "0.1.7"
 Test = "1.10"
 TypeParameterAccessors = "0.4.1"
diff --git a/test/Project.toml b/test/Project.toml
index 65a615d..4b83f78 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -20,6 +20,9 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 TestExtras = "5ed8adda-3752-4e41-b88a-e8b09835ee3a"
 TypeParameterAccessors = "7e5a90cf-f82e-492e-a09b-e3e26432c138"
 
+[sources]
+BlockSparseArrays = {path = ".."}
+
 [compat]
 Adapt = "4"
 Aqua = "0.8"
@@ -37,7 +40,7 @@ SafeTestsets = "0.1"
 SparseArraysBase = "0.7"
 StableRNGs = "1"
 Suppressor = "0.2"
-TensorAlgebra = "0.3, 0.4"
+TensorAlgebra = "0.3, 0.4, 0.5"
 Test = "1"
 TestExtras = "0.3"
 TypeParameterAccessors = "0.4"

From d8c4ed4d0e727e0f5e69a4933f2398677b74ecb9 Mon Sep 17 00:00:00 2001
From: mtfishman <mfishman@flatironinstitute.org>
Date: Mon, 24 Nov 2025 16:17:39 -0500
Subject: [PATCH 2/3] Fix tests

---
 .../BlockSparseArraysTensorAlgebraExt.jl      | 21 +++++++------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/ext/BlockSparseArraysTensorAlgebraExt/BlockSparseArraysTensorAlgebraExt.jl b/ext/BlockSparseArraysTensorAlgebraExt/BlockSparseArraysTensorAlgebraExt.jl
index 8a224f3..5efcc89 100644
--- a/ext/BlockSparseArraysTensorAlgebraExt/BlockSparseArraysTensorAlgebraExt.jl
+++ b/ext/BlockSparseArraysTensorAlgebraExt/BlockSparseArraysTensorAlgebraExt.jl
@@ -1,13 +1,7 @@
 module BlockSparseArraysTensorAlgebraExt
 
 using BlockSparseArrays: AbstractBlockSparseArray, blockreshape
-using TensorAlgebra:
-    TensorAlgebra,
-    BlockedTrivialPermutation,
-    BlockedTuple,
-    FusionStyle,
-    ReshapeFusion,
-    fuseaxes
+using TensorAlgebra: TensorAlgebra, BlockedTuple, FusionStyle, fuseaxes
 
 struct BlockReshapeFusion <: FusionStyle end
 
@@ -20,12 +14,12 @@ using BlockSparseArrays: blocksparse
 using SparseArraysBase: eachstoredindex
 using TensorAlgebra: TensorAlgebra, matricize, unmatricize
 function TensorAlgebra.matricize(
-        ::BlockReshapeFusion, a::AbstractArray, biperm::BlockedTrivialPermutation{2}
+        ::BlockReshapeFusion, a::AbstractArray, length1::Val, length2::Val
     )
-    ax = fuseaxes(axes(a), biperm)
+    ax = fuseaxes(axes(a), length1, length2)
     reshaped_blocks_a = reshape(blocks(a), map(blocklength, ax))
     key(I) = Block(Tuple(I))
-    value(I) = matricize(reshaped_blocks_a[I], biperm)
+    value(I) = matricize(reshaped_blocks_a[I], length1, length2)
     Is = eachstoredindex(reshaped_blocks_a)
     bs = if isempty(Is)
         # Catch empty case and make sure the type is constrained properly.
@@ -45,16 +39,17 @@ using BlockArrays: blocklengths
 function TensorAlgebra.unmatricize(
         ::BlockReshapeFusion,
         m::AbstractMatrix,
-        blocked_ax::BlockedTuple{2, <:Any, <:Tuple{Vararg{AbstractUnitRange}}},
+        codomain_axes::Tuple{Vararg{AbstractUnitRange}},
+        domain_axes::Tuple{Vararg{AbstractUnitRange}},
     )
-    ax = Tuple(blocked_ax)
+    ax = (codomain_axes..., domain_axes...)
     reshaped_blocks_m = reshape(blocks(m), map(blocklength, ax))
     function f(I)
         block_axes_I = BlockedTuple(
             map(ntuple(identity, length(ax))) do i
                 return Base.axes1(ax[i][Block(I[i])])
             end,
-            blocklengths(blocked_ax),
+            (length(codomain_axes), length(domain_axes)),
         )
         return unmatricize(reshaped_blocks_m[I], block_axes_I)
     end

From 30469c916eb2fd92e0b56c82b60d95dcee9bf731 Mon Sep 17 00:00:00 2001
From: mtfishman <mfishman@flatironinstitute.org>
Date: Mon, 24 Nov 2025 16:21:35 -0500
Subject: [PATCH 3/3] Drop older versions of TensorAlgebra

---
 Project.toml      | 2 +-
 test/Project.toml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Project.toml b/Project.toml
index d38a9e0..0459c94 100644
--- a/Project.toml
+++ b/Project.toml
@@ -44,7 +44,7 @@ MapBroadcast = "0.1.5"
 MatrixAlgebraKit = "0.6"
 SparseArraysBase = "0.7.1"
 SplitApplyCombine = "1.2.3"
-TensorAlgebra = "0.3, 0.4, 0.5"
+TensorAlgebra = "0.5"
 TensorProducts = "0.1.7"
 Test = "1.10"
 TypeParameterAccessors = "0.4.1"
diff --git a/test/Project.toml b/test/Project.toml
index 4b83f78..d3284cc 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -40,7 +40,7 @@ SafeTestsets = "0.1"
 SparseArraysBase = "0.7"
 StableRNGs = "1"
 Suppressor = "0.2"
-TensorAlgebra = "0.3, 0.4, 0.5"
+TensorAlgebra = "0.5"
 Test = "1"
 TestExtras = "0.3"
 TypeParameterAccessors = "0.4"