MvNormal method redefinition causing compilation error

[odell]

After a fresh installation of Julia 1.3.1, precompiling fails, returning 2 method redefinition errors. The methods are:

1. Distributions.MvNormal{T, Cov, Mean} where Mean<:(AbstractArray{T, 1} where T) where Cov<:(PDMats.AbstractPDMat{T} where T<:Real) where T<:Real})(AbstractArray{T<:Real, 1}, AbstractArray{U<:Real, 2}) where {T<:Real, U<:Real}
2. Distributions.MvNormal{T, Cov, Mean} where Mean<:(AbstractArray{T, 1} where T) where Cov<:(PDMats.AbstractPDMat{T} where T<:Real) where T<:Real})(AbstractArray{T<:Real, 1}, AbstractArray{U<:Real, 1}) where {T<:Real, U<:Real}

When I try to construct a MvNormal distribution by passing 2 arrays of the same length (mu and sig), I get:

Stacktrace: [1] MvNormal(::Array{Float64,1}, ::Array{Float64,1}) at /home/odell/.julia/packages/Mamba/Jotzr/src/distributions/constructors.jl:22 (repeats 80000 times)

The error message points to Mamba/Jotzr/src/distributions/constructors.jl:19 and Mamba/Jotzr/src/distributions/constructors.jl:22 where the constructors are defined. I removed Mamba, added the Distributions package manually, and commented out lines 19-23 of constructors.jl and tried again. The MvNormal constructor now works. Of course, this isn't much of a solution.

The failure was reproduced on 2 Linux machines. My Mac doesn't seem to have any problems though.

[brian-j-smith]

You might try checking out the current master branch of the package. There is a recent commit for these two MvNormal issues. If that solves the issue for you, I'll plan on releasing an updated version of the package with the fixes.

[odell]

Thanks!