Fix for BlockSparseArrays v0.9 (#56)

Author: mtfishman

Project.toml

@@ -1,7 +1,7 @@
 name = "GradedArrays"
 uuid = "bc96ca6e-b7c8-4bb6-888e-c93f838762c2"
 authors = ["ITensor developers <support@itensor.org> and contributors"]
-version = "0.4.18"
+version = "0.4.19"
 
 [deps]
 BlockArrays = "8e7c35d0-a365-5155-bbbb-fb81a777f24e"
@@ -24,7 +24,7 @@ GradedArraysTensorAlgebraExt = "TensorAlgebra"
 
 [compat]
 BlockArrays = "1.6"
-BlockSparseArrays = "0.8"
+BlockSparseArrays = "0.8, 0.9.3"
 Compat = "4.16"
 FillArrays = "1.13"
 HalfIntegers = "1.6"

src/gradedarray.jl

@@ -48,7 +48,12 @@ function similar_blocksparse(
   similar_blocktype = Base.promote_op(
     similar, blocktype(a), Type{elt}, Tuple{blockaxistypes...}
   )
-  return BlockSparseArray{elt,length(axes),similar_blocktype}(undef, axes)
+  similar_blocktype′ = if !isconcretetype(similar_blocktype)
+    AbstractArray{elt,length(axes)}
+  else
+    similar_blocktype
+  end
+  return BlockSparseArray{elt,length(axes),similar_blocktype′}(undef, axes)
 end
 
 function Base.similar(

src/sectorunitrange.jl

@@ -155,3 +155,7 @@ sector_multiplicities(sr::SectorUnitRange) = [sector_multiplicity(sr)]  # TBD re
 function Base.similar(A::Type{<:AbstractArray}, ax::Tuple{SectorOneTo,Vararg{SectorOneTo}})
   return similar(A, ungrade.(ax))
 end
+
+function Base.reshape(A::AbstractArray, ax::Tuple{SectorOneTo,Vararg{SectorOneTo}})
+  return reshape(A, ungrade.(ax))
+end

test/Project.toml

@@ -17,7 +17,7 @@ TestExtras = "5ed8adda-3752-4e41-b88a-e8b09835ee3a"
 [compat]
 Aqua = "0.8.11"
 BlockArrays = "1.6"
-BlockSparseArrays = "0.8"
+BlockSparseArrays = "0.8, 0.9"
 GradedArrays = "0.4"
 LinearAlgebra = "1.10"
 MatrixAlgebraKit = "0.2"