# Installation of ForneyLab

**URL:** <https://discourse.julialang.org/t/installation-of-forneylab/80093>\
**Category:** General Usage\
**Created:** [April 26, 2022, 10:16pm UTC](https://discourse.julialang.org/t/installation-of-forneylab/80093 "2022-04-26T22:16:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![erlebach](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/erlebach/32/12973_2.png) [@erlebach](https://discourse.julialang.org/u/erlebach)\
**Post date:** [April 26, 2022, 10:16pm UTC](https://discourse.julialang.org/t/installation-of-forneylab/80093/1 "2022-04-26T22:16:19Z")

</div>

I was using ForneyLab with Atom 1.6 on my M1 Macbook Air. All was well, except for the standard development errors. At some point, `using ForneyLab` generated an error on Jupyterlab, and eventually in Atom. I removed and reinstalled Atom. Then I installed the following packages: Plots, GraphViz, and ForneyLab. Here is the status report:

```julia
  [c52e3926] Atom v0.12.36
  [9fc3f58a] ForneyLab v0.11.4
  [f526b714] GraphViz v0.2.0
  [e5e0dc1b] Juno v0.8.4
  [91a5bcdd] Plots v1.27.6

```

and the result when executing `using ForneyLab`:

```julia
julia> using ForneyLab
[Info: Precompiling ForneyLab [9fc3f58a-c2cc-5bff-9419-6a294fefdca9]
ERROR: LoadError: UndefVarError: dist not defined
Stacktrace:
  [1] top-level scope
    @ ~/.julia/packages/ForneyLab/y2b8v/src/probability_distribution.jl:122
  [2] include(mod::Module, _path::String)
    @ Base ./Base.jl:418
  [3] include(x::String)
    @ ForneyLab ~/.julia/packages/ForneyLab/y2b8v/src/ForneyLab.jl:1
  [4] top-level scope
    @ ~/.julia/packages/ForneyLab/y2b8v/src/ForneyLab.jl:35
  [5] include
    @ ./Base.jl:418 [inlined]
  [6] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt64}}, source::Nothing)
    @ Base ./loading.jl:1318
  [7] top-level scope
    @ none:1
  [8] eval
    @ ./boot.jl:373 [inlined]
  [9] eval(x::Expr)
    @ Base.MainInclude ./client.jl:453
 [10] top-level scope
    @ none:1
in expression starting at /Users/erlebach/.julia/packages/ForneyLab/y2b8v/src/probability_distribution.jl:122
in expression starting at /Users/erlebach/.julia/packages/ForneyLab/y2b8v/src/ForneyLab.jl:1
ERROR: Failed to precompile ForneyLab [9fc3f58a-c2cc-5bff-9419-6a294fefdca9] to /Users/erlebach/.julia/compiled/v1.7/ForneyLab/jl_YUilav.
Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:33
 [2] compilecache(pkg::Base.PkgId, path::String, internal_stderr::IO, internal_stdout::IO, ignore_loaded_modules::Bool)
   @ Base ./loading.jl:1466
 [3] compilecache(pkg::Base.PkgId, path::String)
   @ Base ./loading.jl:1410
 [4] _require(pkg::Base.PkgId)
   @ Base ./loading.jl:1120
 [5] require(uuidkey::Base.PkgId)
   @ Base ./loading.jl:1013
 [6] require(into::Module, mod::Symbol)
   @ Base ./loading.jl:997

```

I have absolutely no idea where to start having tried all my usual approaches. I am getting “UndefVarError: dist not defined”. What is `dist`? I have found no actionable reference to this particular error. A search on Google for the terms: "“dist not defined” “julia” produced only three results!

One additional note: I can load Forneylab when invoking Julia from the commandline.

Any help and suggestions of what to try would be appreciated.

Gordon