diff --git a/precompile/generate_precompile.jl b/precompile/generate_precompile.jl
deleted file mode 100644
index d226bdfbe6..0000000000
--- a/precompile/generate_precompile.jl
+++ /dev/null
@@ -1,23 +0,0 @@
-using SnoopCompile
-
-# Note: in order to generate a new precompile.jl file,
-# you need to comment out the lines:
-# ```
-# include("../precompile/precompile.jl")
-# _precompile_()
-# ```
-# in src/ITensors.jl (otherwise many functions will
-# be precompiled and SnoopCompile won't think they
-# need to get precompiled).
-#
-# Also, snooping on dmrg itself causes problems in
-# precompilation. Explicitly add the command:
-# ```
-# precompile(Tuple{typeof(dmrg),MPO,MPS,Sweeps})
-# ```
-# to precompile.jl after it is generated.
-
-inf_timing = @snoopi tmin = 0.01 include("snoop/snoop.jl")
-pc = SnoopCompile.parcel(inf_timing)
-SnoopCompile.write("tmp", pc)
-cp("tmp/precompile_ITensors.jl", "precompile.jl"; force=true)
diff --git a/precompile/precompile.jl b/precompile/precompile.jl
deleted file mode 100644
index bda6e3b024..0000000000
--- a/precompile/precompile.jl
+++ /dev/null
@@ -1,1321 +0,0 @@
-function _precompile_()
-  ccall(:jl_generating_output, Cint, ()) == 1 || return nothing
-  precompile(
-    Tuple{
-      Core.kwftype(typeof(ITensors.eigen)),
-      NamedTuple{
-        (
-          :ishermitian,
-          :which_decomp,
-          :tags,
-          :maxdim,
-          :mindim,
-          :cutoff,
-          :eigen_perturbation,
-          :ortho,
-        ),
-        Tuple{Bool,Nothing,TagSet,Int64,Int64,Float64,Nothing,String},
-      },
-      typeof(eigen),
-      ITensor{2},
-      IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-      IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-    },
-  )
-  precompile(
-    Tuple{
-      Core.kwftype(typeof(ITensors.factorize)),
-      NamedTuple{
-        (:which_decomp, :tags, :maxdim, :mindim, :cutoff, :eigen_perturbation, :ortho),
-        Tuple{Nothing,TagSet,Int64,Int64,Float64,Nothing,String},
-      },
-      typeof(factorize),
-      ITensor{3},
-      IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-    },
-  )
-  precompile(
-    Tuple{
-      Core.kwftype(typeof(ITensors.replacebond!)),
-      NamedTuple{
-        (:maxdim, :mindim, :cutoff, :eigen_perturbation, :ortho, :which_decomp),
-        Tuple{Int64,Int64,Float64,Nothing,String,Nothing},
-      },
-      typeof(replacebond!),
-      MPS,
-      Int64,
-      ITensor{3},
-    },
-  )
-  precompile(
-    Tuple{
-      Core.kwftype(typeof(KrylovKit.eigsolve)),
-      NamedTuple{
-        (:ishermitian, :tol, :krylovdim, :maxiter),Tuple{Bool,Float64,Int64,Int64}
-      },
-      typeof(KrylovKit.eigsolve),
-      ProjMPO,
-      ITensor{3},
-      Int64,
-      Symbol,
-    },
-  )
-  precompile(
-    Tuple{
-      Core.kwftype(typeof(KrylovKit.expand!)),
-      NamedTuple{(:verbosity,),Tuple{Int64}},
-      typeof(KrylovKit.expand!),
-      KrylovKit.LanczosIterator{ProjMPO,ITensor{3},KrylovKit.ModifiedGramSchmidt2},
-      KrylovKit.LanczosFactorization{ITensor{3},Float64},
-    },
-  )
-  precompile(
-    Tuple{
-      Core.kwftype(typeof(NDTensors.eigen)),
-      NamedTuple{
-        (
-          :ishermitian,
-          :which_decomp,
-          :tags,
-          :maxdim,
-          :mindim,
-          :cutoff,
-          :eigen_perturbation,
-          :ortho,
-        ),
-        Tuple{Bool,Nothing,TagSet,Int64,Int64,Float64,Nothing,String},
-      },
-      typeof(eigen),
-      LinearAlgebra.Hermitian{
-        Float64,
-        NDTensors.Tensor{
-          Float64,
-          2,
-          NDTensors.Dense{Float64,Array{Float64,1}},
-          IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-        },
-      },
-    },
-  )
-  precompile(
-    Tuple{
-      Core.kwftype(typeof(NDTensors.svd)),
-      NamedTuple{(:alg,),Tuple{String}},
-      typeof(svd),
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-    },
-  )
-  precompile(
-    Tuple{
-      Core.kwftype(typeof(NDTensors.svd)),
-      NamedTuple{(:alg,),Tuple{String}},
-      typeof(svd),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-    },
-  )
-  precompile(Tuple{ProjMPO,ITensor{3}})
-  precompile(Tuple{Type{MPO},AutoMPO,Array{Index{Int64},1}})
-  precompile(Tuple{Type{TagSet},String})
-  precompile(
-    Tuple{
-      typeof(*),
-      Float64,
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-    },
-  )
-  precompile(Tuple{typeof(*),ITensor{2},ITensor{3}})
-  precompile(Tuple{typeof(*),ITensor{3},ITensor{1}})
-  precompile(Tuple{typeof(*),ITensor{3},ITensor{2}})
-  precompile(Tuple{typeof(*),ITensor{3},ITensor{3}})
-  precompile(Tuple{typeof(*),ITensor{4},ITensor{1}})
-  precompile(Tuple{typeof(*),ITensor{4},ITensor{4}})
-  precompile(Tuple{typeof(==),Array{Index{Int64},1},Array{Index{Int64},1}})
-  precompile(
-    Tuple{
-      typeof(==),
-      IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-    },
-  )
-  precompile(Tuple{typeof(==),TagSet,TagSet})
-  precompile(
-    Tuple{
-      typeof(Base.Broadcast.materialize!),
-      ITensor{4},
-      Base.Broadcast.Broadcasted{
-        ITensors.ITensorStyle,Nothing,typeof(+),Tuple{ITensor{4},ITensor{4}}
-      },
-    },
-  )
-  precompile(Tuple{typeof(Base.afoldl),typeof(*),ITensor{4},ITensor{3}})
-  precompile(
-    Tuple{typeof(ITensors.setstore!),ITensor{2},NDTensors.Dense{Float64,Array{Float64,1}}}
-  )
-  precompile(
-    Tuple{
-      typeof(KrylovKit.orthogonalize!),ITensor{3},ITensor{3},KrylovKit.ModifiedGramSchmidt2
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Number,
-        2,
-        NDTensors.Combiner,
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Diag{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,0,NDTensors.Dense{Float64,Array{Float64,1}},IndexSet{0,Union{},Tuple{}}
-      },
-      Tuple{},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Number,
-        2,
-        NDTensors.Combiner,
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Diag{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        1,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-      },
-      Tuple{Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        1,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-      },
-      Tuple{Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contract!!),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contraction_output),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      IndexSet{0,Union{},Tuple{}},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.contraction_output),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NDTensors.Tensor{
-        Float64,
-        1,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-      },
-      IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.getperm),
-      IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.permutedims!!),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      Function,
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(NDTensors.permutedims!!),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      Function,
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(Random.randn!),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-    },
-  )
-  precompile(Tuple{typeof(axpy!),Float64,ITensor{3},ITensor{3}})
-  precompile(Tuple{typeof(combiner),Index{Int64}})
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Number,
-        2,
-        NDTensors.Combiner,
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NTuple{4,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Number,
-        2,
-        NDTensors.Combiner,
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Number,
-        2,
-        NDTensors.Combiner,
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Diag{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Diag{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Diag{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Diag{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        1,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-      },
-      Tuple{Int64},
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        1,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-      },
-      Tuple{Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NTuple{4,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      Tuple{Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      Tuple{},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        1,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-      },
-      Tuple{Int64},
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        1,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-      },
-      Tuple{Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        3,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      },
-      Tuple{Int64,Int64,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NTuple{4,Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(contract),
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-      NDTensors.Tensor{
-        Float64,
-        4,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{4,Index{Int64},NTuple{4,Index{Int64}}},
-      },
-      NTuple{4,Int64},
-    },
-  )
-  precompile(
-    Tuple{typeof(hassameinds),ITensor{3},Tuple{Index{Int64},Index{Int64},Index{Int64}}}
-  )
-  precompile(Tuple{typeof(hastags),TagSet,String})
-  precompile(Tuple{typeof(itensor),Array{Float64,2},Index{Int64},Index{Int64}})
-  precompile(
-    Tuple{
-      typeof(itensor),Array{Float64,3},Index{Int64},Index{Int64},Vararg{Index,N} where N
-    },
-  )
-  precompile(Tuple{typeof(mul!),ITensor{3},ITensor{3},Float64})
-  precompile(
-    Tuple{
-      typeof(mul!),
-      ITensor{3},
-      KrylovKit.OrthonormalBasis{ITensor{3}},
-      SubArray{Float64,1,Array{Float64,2},Tuple{UnitRange{Int64},Int64},true},
-    },
-  )
-  precompile(Tuple{typeof(prime),ITensor{3},ITensors.Not{TagSet}})
-  precompile(
-    Tuple{
-      typeof(prime),
-      IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      Int64,
-      ITensors.Not{IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}}},
-    },
-  )
-  precompile(Tuple{typeof(randomITensor),Index{Int64},Index{Int64},Index{Int64}})
-  precompile(Tuple{typeof(randomMPS),Array{Index{Int64},1},Int64})
-  precompile(Tuple{typeof(replaceind!),ITensor{2},Index{Int64},Index{Int64}})
-  precompile(Tuple{typeof(replaceind!),ITensor{3},Index{Int64},Index{Int64}})
-  precompile(
-    Tuple{
-      typeof(replaceind),
-      IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      Index{Int64},
-      Index{Int64},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(replaceinds),
-      IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      Tuple{Index{Int64},Index{Int64}},
-      Tuple{Index{Int64},Index{Int64}},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(replaceinds),
-      IndexSet{3,Index{Int64},Tuple{Index{Int64},Index{Int64},Index{Int64}}},
-      IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-      IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(setindex!),
-      Dict{Array{ITensors.SiteOp,1},Array{Float64,2}},
-      Array{Float64,2},
-      Array{ITensors.SiteOp,1},
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(svd),
-      NDTensors.Tensor{
-        Complex{Float64},
-        2,
-        NDTensors.Dense{Complex{Float64},Array{Complex{Float64},1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-    },
-  )
-  precompile(
-    Tuple{
-      typeof(svd),
-      NDTensors.Tensor{
-        Float64,
-        2,
-        NDTensors.Dense{Float64,Array{Float64,1}},
-        IndexSet{2,Index{Int64},Tuple{Index{Int64},Index{Int64}}},
-      },
-    },
-  )
-  return precompile(
-    Tuple{
-      typeof(zip),
-      IndexSet{1,Index{Int64},Tuple{Index{Int64}}},
-      Vararg{IndexSet{1,Index{Int64},Tuple{Index{Int64}}},N} where N,
-    },
-  )
-end
diff --git a/precompile/snoop/dmrg.jl b/precompile/snoop/dmrg.jl
deleted file mode 100644
index e6cab70284..0000000000
--- a/precompile/snoop/dmrg.jl
+++ /dev/null
@@ -1,69 +0,0 @@
-let
-  # One step of dmrg (dmrg itself
-  # leads to an error during precompilation)
-  # Add `precompile(Tuple{typeof(dmrg),MPO,MPS,Sweeps})`
-  # to precompile.jl by hand.
-  N = 4
-  sites = siteinds("S=1", N)
-  opsum = OpSum()
-  for j in 1:(N - 1)
-    opsum .+= ("Sz", j, "Sz", j + 1)
-    opsum .+= (0.5, "S+", j, "S-", j + 1)
-    opsum .+= (0.5, "S-", j, "S+", j + 1)
-  end
-  H = MPO(opsum, sites)
-  psi0 = randomMPS(sites, 10)
-  sweeps = Sweeps(1)
-  maxdim!(sweeps, 10)
-  cutoff!(sweeps, 1E-11)
-  PH = ProjMPO(H)
-  which_decomp = nothing
-  obs = NoObserver()
-  quiet = false
-  eigsolve_tol = 1e-14
-  eigsolve_krylovdim = 3
-  eigsolve_maxiter = 1
-  eigsolve_verbosity = 0
-  ishermitian = true
-  eigsolve_which_eigenvalue = :SR
-  psi = copy(psi0)
-  N = length(psi)
-  ITensors.position!(PH, psi0, 1)
-  energy = 0.0
-  sw = 1
-  for sw in 1:nsweep(sweeps)
-    # This loop causes problems for precompilation
-    #for (b, ha) in sweepnext(N)
-    b, ha = 1, 1
-    ITensors.position!(PH, psi, b)
-    phi = psi[b] * psi[b + 1]
-    vals, vecs = ITensors.KrylovKit.eigsolve(
-      PH,
-      phi,
-      1,
-      eigsolve_which_eigenvalue;
-      ishermitian=ishermitian,
-      tol=eigsolve_tol,
-      krylovdim=eigsolve_krylovdim,
-      maxiter=eigsolve_maxiter,
-    )
-    energy, phi = vals[1], vecs[1]
-    ortho = ha == 1 ? "left" : "right"
-    drho = nothing
-    spec = replacebond!(
-      psi,
-      b,
-      phi;
-      maxdim=maxdim(sweeps, sw),
-      mindim=mindim(sweeps, sw),
-      cutoff=cutoff(sweeps, sw),
-      eigen_perturbation=drho,
-      ortho=ortho,
-      which_decomp=which_decomp,
-    )
-    measure!(
-      obs; energy=energy, psi=psi, bond=b, sweep=sw, half_sweep=ha, spec=spec, quiet=quiet
-    )
-    #end
-  end
-end
diff --git a/precompile/snoop/itensor.jl b/precompile/snoop/itensor.jl
deleted file mode 100644
index 31447f6eb9..0000000000
--- a/precompile/snoop/itensor.jl
+++ /dev/null
@@ -1,11 +0,0 @@
-let
-  i = Index(2)
-  A = randomITensor(i, i', i'')
-  for T in (Float64, ComplexF64)
-    A = randomITensor(T, i, i')
-    B = randomITensor(T, i', i'')
-    C = A * B
-    U, S, V = svd(A, i)
-    A, B = factorize(A, i)
-  end
-end
diff --git a/precompile/snoop/runtests.jl b/precompile/snoop/runtests.jl
deleted file mode 100644
index aa79348d22..0000000000
--- a/precompile/snoop/runtests.jl
+++ /dev/null
@@ -1,38 +0,0 @@
-
-# Many test files are leading
-# to precompile command that
-# cause errors, so they
-# are commented out
-
-for filename in (
-  "tagset.jl",
-  "smallstring.jl",
-  "index.jl",
-  "indexset.jl",
-  "not.jl",
-  #"itensor_dense.jl",
-  #"itensor_diag.jl",
-  #"contract.jl",
-  #"combiner.jl",
-  #"trg.jl",
-  #"ctmrg.jl",
-  #"iterativesolvers.jl",
-  #"dmrg.jl",
-  #"tag_types.jl",
-  #"phys_site_types.jl",
-  #"decomp.jl",
-  #"lattices.jl",
-  #"mps.jl",
-  #"mpo.jl",
-  #"autompo.jl",
-  #"svd.jl",
-  #"qn.jl",
-  #"qnindex.jl",
-  #"itensor_blocksparse.jl",
-  #"itensor_diagblocksparse.jl",
-  #"readwrite.jl",
-  #"readme.jl",
-  #"examples.jl",
-)
-  include("../../test/$filename")
-end
diff --git a/precompile/snoop/snoop.jl b/precompile/snoop/snoop.jl
deleted file mode 100644
index c9c235e4c8..0000000000
--- a/precompile/snoop/snoop.jl
+++ /dev/null
@@ -1,5 +0,0 @@
-using ITensors
-
-include("runtests.jl")
-include("itensor.jl")
-include("dmrg.jl")