Simple way to "deprecate" packages?

[IainNZ]

I've been thinking about how to deprecate packages a bit more smoothly. Let me throw out an idea:

I'm not sure what happens to Pkg if you flat out nuke a whole package in METADATA, but what thing you could do is set the maximum Julia version for all versions of the to-be-deprecated package to the current release.

E.g. Trie.jl is being merged into DataStructures. We can set the maximum julia version for Trie to julia 0.2, and then when julia 0.3 (or 0.4?) comes out we can safely delete it (presumably).

[kmsquire]

I don't think packages should be removed from METADATA.jl totally until there's a version bump. For example, if someone wants to replicate some results using a specific (older) version of Julia, they'll still need/want access to packages which have been removed or renamed.

Related: #347 (which you already commented on)

[IainNZ]

Wow yeah I shouldn't make a new issue