Remove the compat submodule and shrink the itensors.jl shim onto the upstream API#2

Merged

mtfishman merged 22 commits into

mf/itensorbase-backendfrom

mf/rm-compat

Jul 10, 2026

Commits on Jul 9, 2026

Remove the ITensorsITensorBaseCompat submodule
mtfishman
committed
Replace the random_itensor shim with randn

mtfishman
and
claude
committed
Build the boundary-MPS bond index with trivialrange directly

mtfishman
and
claude
committed
Trim the itensors.jl shim toward Base and upstream

mtfishman
and
claude
committed
Strip the explanatory comments from the itensors.jl shim

mtfishman
and
claude
committed
Remove the local index-set helpers in favor of ITensorBase and Base set-ops

mtfishman
and
claude
committed
Factor through MatrixAlgebraKit-native decompositions instead of the compat helpers

mtfishman
and
claude
committed
Drop the local index and similar shims for ITensorBase equivalents

mtfishman
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claude
committed
Label contraction sequences by Index instead of name

mtfishman
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claude
committed
Compare tensor-network indices by Index equality, not name

mtfishman
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claude
committed
Drop redundant collect around inds

mtfishman
and
claude
committed
Retire the compat factorize and eigen wrappers

mtfishman
and
claude
committed
Delete the dead hastags helper

mtfishman
and
claude
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Simplify directsum onto Index equality

mtfishman
and
claude
committed
Add a test for tensor-network addition

mtfishman
and
claude
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Align directsum with unname and use eltype

mtfishman
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claude
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Call ITensorBase and TensorAlgebra APIs directly, drop more itensors.jl wrappers

mtfishman
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claude
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Duck-type settags to accept any iterable of tag pairs

mtfishman
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claude
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Report the exact truncation error from svd_trunc

mtfishman
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claude
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Remove matricize(a::ITensor) shim, use upstream auto-naming matricize

mtfishman
and
claude
committed

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Remove the compat submodule and shrink the itensors.jl shim onto the upstream API#2

Remove the compat submodule and shrink the itensors.jl shim onto the upstream API#2
mtfishman merged 22 commits into
mf/itensorbase-backendfrom
mf/rm-compat

Commits on Jul 9, 2026

Remove the ITensorsITensorBaseCompat submodule

Replace the random_itensor shim with randn

Build the boundary-MPS bond index with trivialrange directly

Trim the itensors.jl shim toward Base and upstream

Strip the explanatory comments from the itensors.jl shim

Remove the local index-set helpers in favor of ITensorBase and Base set-ops

Factor through MatrixAlgebraKit-native decompositions instead of the compat helpers

Drop the local index and similar shims for ITensorBase equivalents

Label contraction sequences by Index instead of name

Compare tensor-network indices by Index equality, not name

Drop redundant collect around inds

Retire the compat factorize and eigen wrappers

Delete the dead hastags helper

Simplify directsum onto Index equality

Add a test for tensor-network addition

Align directsum with unname and use eltype

Call ITensorBase and TensorAlgebra APIs directly, drop more itensors.jl wrappers

Duck-type settags to accept any iterable of tag pairs

Report the exact truncation error from svd_trunc

Remove matricize(a::ITensor) shim, use upstream auto-naming matricize

Commits on Jul 10, 2026

Drop the ITensorBase/TensorAlgebra [sources] pins

Raise ITensorBase and TensorAlgebra compat floors to the registered fix versions