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Don't load packages in extension other than parent #217

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9 changes: 5 additions & 4 deletions ext/LinearMapsSparseArraysExt.jl
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Expand Up @@ -3,20 +3,21 @@ module LinearMapsSparseArraysExt
import SparseArrays: sparse, blockdiag, SparseMatrixCSC
using SparseArrays: AbstractSparseMatrix

using LinearAlgebra, LinearMaps
using LinearMaps
import LinearMaps: _issymmetric, _ishermitian
using LinearMaps: WrappedMap, CompositeMap, LinearCombination, ScaledMap, UniformScalingMap,
AdjointMap, TransposeMap, BlockMap, BlockDiagonalMap, KroneckerMap, KroneckerSumMap,
VecOrMatMap, AbstractVecOrMatOrQ, MapOrVecOrMat
using LinearMaps: convert_to_lmaps, _tail, _unsafe_mul!
VecOrMatMap, AbstractVecOrMatOrQ, MapOrVecOrMat, convert_to_lmaps, _tail, _unsafe_mul!

using LinearMaps.LinearAlgebra

_issymmetric(A::AbstractSparseMatrix) = issymmetric(A)
_ishermitian(A::AbstractSparseMatrix) = ishermitian(A)

# blockdiagonal concatenation via extension of blockdiag

"""
blockdiag(As::Union{LinearMap,AbstractVecOrMatOrQ}...)::BlockDiagonalMap
blockdiag(As::Union{LinearMap,AbstractVecOrMat,AbstractQ}...)::BlockDiagonalMap

Construct a (lazy) representation of the diagonal concatenation of the arguments.
To avoid fallback to the generic `blockdiag`, there must be a `LinearMap`
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