Fix lazy ITensor (#14)

Author: mtfishman

Project.toml

@@ -1,7 +1,7 @@
 name = "ITensorNetworksNext"
 uuid = "302f2e75-49f0-4526-aef7-d8ba550cb06c"
 authors = ["ITensor developers <[email protected]> and contributors"]
-version = "0.1.9"
+version = "0.1.10"
 
 [deps]
 AbstractTrees = "1520ce14-60c1-5f80-bbc7-55ef81b5835c"

src/lazynameddimsarrays.jl

@@ -294,7 +294,9 @@ TermInterface.operation(m::Mul) = *
     union::Union{A, Mul{LazyNamedDimsArray{T, A}}}
 end
 function LazyNamedDimsArray(a::AbstractNamedDimsArray)
-    return LazyNamedDimsArray{eltype(a), typeof(a)}(a)
+    # Use `eltype(typeof(a))` for arrays that have different
+    # runtime and compile time eltypes, like `ITensor`.
+    return LazyNamedDimsArray{eltype(typeof(a)), typeof(a)}(a)
 end
 function LazyNamedDimsArray(a::Mul{LazyNamedDimsArray{T, A}}) where {T, A}
     return LazyNamedDimsArray{T, A}(a)