Missing dependency error

[Niklas Gustafsson]

This morning, Flux fails to load because of this error:

ERROR: LoadError: ArgumentError: Package MacroTools does not have DataStructures in its dependencies:
- If you have MacroTools checked out for development and have
  added DataStructures as a dependency but haven't updated your primary
  environment's manifest file, try `Pkg.resolve()`.
- Otherwise you may need to report an issue with MacroTools
Stacktrace:
 [1] require(::Module, ::Symbol) at .\loading.jl:836
 [2] include at .\boot.jl:326 [inlined]
 [3] include_relative(::Module, ::String) at .\loading.jl:1038
 [4] include(::Module, ::String) at .\sysimg.jl:29
 [5] top-level scope at none:2
 [6] eval at .\boot.jl:328 [inlined]
 [7] eval(::Expr) at .\client.jl:404
 [8] top-level scope at .\none:3
in expression starting at C:\Users\niklasg\.julia\packages\MacroTools\AXAbb\src\MacroTools.jl:3

[Niklas Gustafsson]

This was a mistake on my part -- bad project configuration.