# SymPy does not precompile in v1.2?

**URL:** <https://discourse.julialang.org/t/sympy-does-not-precompile-in-v1-2/28257>\
**Category:** General Usage\
**Tags:** package\
**Created:** [September 1, 2019, 8:09am UTC](https://discourse.julialang.org/t/sympy-does-not-precompile-in-v1-2/28257 "2019-09-01T08:09:27Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![drmartinrohde](https://avatars.discourse-cdn.com/v4/letter/d/f0a364/32.png) [@drmartinrohde](https://discourse.julialang.org/u/drmartinrohde)\
**Post date:** [September 1, 2019, 8:09am UTC](https://discourse.julialang.org/t/sympy-does-not-precompile-in-v1-2/28257/1 "2019-09-01T08:09:27Z")

</div>

I am trying to use SymPy to do some symbolic manipulation in Julia. A simple code like

```julia
using SymPy

@vars x

f(x) = e^x

```

results in an error when precompiling:

```julia
[Info: Precompiling SymPy [24249f21-da20-56a4-8eb1-6a02cf4ae2e6]
ERROR: LoadError: InitError: /Users/mrohde/.julia/packages/SpecialFunctions/fvheQ/deps/usr/lib/libopenspecfun.1.3.dylib cannot be opened, Please re-run Pkg.build("fvheQ"), and restart Julia.
Stacktrace:
 [1] error(::String) at ./error.jl:33
 [2] check_deps() at /Users/mrohde/.julia/packages/SpecialFunctions/fvheQ/deps/deps.jl:20
 [3] __init__ () at /Users/mrohde/.julia/packages/SpecialFunctions/fvheQ/src/SpecialFunctions.jl:12
 [4] _include_from_serialized(::String, ::Array{Any,1}) at ./loading.jl:685
 [5] _require_search_from_serialized(::Base.PkgId, ::String) at ./loading.jl:765
 [6] _require(::Base.PkgId) at ./loading.jl:990
 [7] require(::Base.PkgId) at ./loading.jl:911
 [8] require(::Module, ::Symbol) at ./loading.jl:906
 [9] include at ./boot.jl:328 [inlined]
 [10] include_relative(::Module, ::String) at ./loading.jl:1094
 [11] include(::Module, ::String) at ./Base.jl:31
 [12] top-level scope at none:2
 [13] eval at ./boot.jl:330 [inlined]
 [14] eval(::Expr) at ./client.jl:432
 [15] top-level scope at ./none:3
during initialization of module SpecialFunctions
in expression starting at /Users/mrohde/.julia/packages/SymPy/wd4d9/src/SymPy.jl:35
ERROR: LoadError: Failed to precompile SymPy [24249f21-da20-56a4-8eb1-6a02cf4ae2e6] to /Users/mrohde/.julia/compiled/v1.2/SymPy/KzewI.ji.
Stacktrace:
 [1] error(::String) at ./error.jl:33
 [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1253
 [3] _require(::Base.PkgId) at ./loading.jl:1013
 [4] require(::Base.PkgId) at ./loading.jl:911
 [5] require(::Module, ::Symbol) at ./loading.jl:906
 [6] include_string(::Module, ::String, ::String) at ./loading.jl:1064
 [7] (::getfield(Main._vscodeserver, Symbol("##9#12")){String,Int64,Int64,String})() at /Users/mrohde/.vscode-insiders/extensions/julialang.language-julia-0.12.2/scripts/terminalserver/terminalserver.jl:153
 [8] withpath(::getfield(Main._vscodeserver, Symbol("##9#12")){String,Int64,Int64,String}, ::String) at /Users/mrohde/.vscode-insiders/extensions/julialang.language-julia-0.12.2/scripts/terminalserver/repl.jl:62
 [9] (::getfield(Main._vscodeserver, Symbol("##8#11")){String,Int64,Int64,String})() at /Users/mrohde/.vscode-insiders/extensions/julialang.language-julia-0.12.2/scripts/terminalserver/terminalserver.jl:152
 [10] hideprompt(::getfield(Main._vscodeserver, Symbol("##8#11")){String,Int64,Int64,String}) at /Users/mrohde/.vscode-insiders/extensions/julialang.language-julia-0.12.2/scripts/terminalserver/repl.jl:28
 [11] macro expansion at /Users/mrohde/.vscode-insiders/extensions/julialang.language-julia-0.12.2/scripts/terminalserver/terminalserver.jl:148 [inlined]
 [12] (::getfield(Main._vscodeserver, Symbol("##7#10")))() at ./task.jl:268
in expression starting at /Users/mrohde/Downloads/test.jl:1

```

When doing

`Pkg.build("fvheQ")`

as provided in the error message I get the message that fvheQ does not exist as package.

Could somebody help? Thanks!

---

<div class="post-metadata">

**Author:** ![stevengj](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stevengj/32/71_2.png) [@stevengj](https://discourse.julialang.org/u/stevengj)\
**Post date:** [September 1, 2019, 11:35am UTC](https://discourse.julialang.org/t/sympy-does-not-precompile-in-v1-2/28257/2 "2019-09-01T11:35:07Z")

</div>

> [@drmartinrohde](#):
>
> I am trying to use SymPy to do some symbolic manipulation in Julia. A simple code like
> 
> ```julia
> using SymPy
> @vars x
> 
> ```
> 
> results in an error when precompiling:

I also find that `using SymPy` by itself fails in the REPL using Julia 1.2, but the error is due to the SpecialFunctions module, not SymPy.

Doing `Pkg.build("SpecialFunctions")` made the error go away for me. I suspect that there was/is a problem in its build script that broke upgrades.

---

<div class="post-metadata">

**Author:** ![drmartinrohde](https://avatars.discourse-cdn.com/v4/letter/d/f0a364/32.png) [@drmartinrohde](https://discourse.julialang.org/u/drmartinrohde)\
**Post date:** [September 2, 2019, 2:56pm UTC](https://discourse.julialang.org/t/sympy-does-not-precompile-in-v1-2/28257/3 "2019-09-02T14:56:27Z")

</div>

That did the job. Thanks Steven! 👍