Error precompiling DataFrames: UndefVarError: ComposedFunction not defined

General Usage
1

Dear folks,

I work in a project using a specific Project.toml in which I have not updated the packages for a while because everything was working fine. When I start that project now and instantiate it with Pkg, there is an error when DataFrames is precompiled. I use Atom and Julia 1.4.0 on Ubuntu 18.04. The problem exists also after a fresh reboot and a new REPL session. However, it seems to work in a REPL session started from the shell (not in Atom). The stacktrace is

[ Info: Precompiling DataFrames [a93c6f00-e57d-5684-b7b6-d8193f3e46c0]
ERROR: LoadError: LoadError: UndefVarError: ComposedFunction not defined
Stacktrace:
 [1] top-level scope at /home/mk/.julia/packages/DataFrames/nxjiD/src/other/utils.jl:82
 [2] include(::Module, ::String) at ./Base.jl:377
 [3] include(::String) at /home/mk/.julia/packages/DataFrames/nxjiD/src/DataFrames.jl:1
 [4] top-level scope at /home/mk/.julia/packages/DataFrames/nxjiD/src/DataFrames.jl:109
 [5] include(::Module, ::String) at ./Base.jl:377
 [6] top-level scope at none:2
 [7] eval at ./boot.jl:331 [inlined]
 [8] eval(::Expr) at ./client.jl:449
 [9] top-level scope at ./none:3
in expression starting at /home/mk/.julia/packages/DataFrames/nxjiD/src/other/utils.jl:79
in expression starting at /home/mk/.julia/packages/DataFrames/nxjiD/src/DataFrames.jl:109
ERROR: Failed to precompile DataFrames [a93c6f00-e57d-5684-b7b6-d8193f3e46c0] to /home/mk/.julia/compiled/v1.4/DataFrames/AR9oZ_yCSnu.ji.
Stacktrace:
 [1] error(::String) at ./error.jl:33
 [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1272
 [3] _require(::Base.PkgId) at ./loading.jl:1029
 [4] require(::Base.PkgId) at ./loading.jl:927
 [5] require(::Module, ::Symbol) at ./loading.jl:922

The installed DataFrames version is [a93c6f00] DataFrames v1.1.1 but the same problem appears with older versions.

Do you have any ideas how to fix that? Thank you in advance.

Best regards, mk

2

ComposedFunction was introduced in Julia 1.6, which is why you are getting an error about ComposedFunction not being defined.

However there is still a problem, as DataFrames.jl should be smart enough to detect your lower Julia version and behave appropriately, see here.

The fact that it works in the shell but not Atom is interesting. I think somehow your Compat package is being held back by Atom.

3

Thank you for the answer. I forgot to say that I upgraded to DataFrames v1.1.1 after the problem appeared the first time. Before it was DataFrames v0.22.1 and Compat v3.23.0. I now reverted to that version which worked fine for several month. The problem appeared more or less from one day to the next. But I did not do any update to the project setting (and Atom also does not update automatically).

I gave it another try with the “original setting”, and can confirm it works in the shell but not in Atom :frowning: